class 7 science chapter 4 extra questions

Free PDF download of Important Questions with solutions for CBSE Class 7 Science Chapter 11 - Transportation in Animals and Plants prepared by expert Science teachers from latest edition of CBSE(NCERT) books. Question from very important topics are covered by NCERT Exemplar Class 7.. You also get idea about the type of questions and method to answer in your Class 7th … Answer: Answer: Step III Describe in detail about the occurrence of oceanic currents. Answer: Briefly mention one application of kink in the clinical thermometer. Suggest a way to set curd in such a situation. True. Name the mode of transfer of heat in which medium is not required. Given below are the links of some of the reference books for class 7 math. Shining thread in thermometer is the column of mercury. Class 7 Science Chapter 4 Important Questions and Keywords of Heat updated for new academic session 2020-21. refrigerator also gets cooled faster. Answer: Question 9. Question 17. (a) Thermometers (i) and (iii) for measuring body temperature and (ii) for measuring the temperature of boiling water Contents. Shopkeepers selling ice blocks usually cover them with jute sacks. It is called ……. Answer: Differentiate between two modes of transfer of heat, i.e. (b) In which order, the pins at points P, Q and R fixed with the help of wax fall if points O, P, Q and R are equidistant from each other? Free PDF download of Important Questions with solutions for CBSE Class 6 Science Chapter 4 - Sorting Materials into Groups prepared by expert Science teachers from latest edition of CBSE(NCERT) books. Answer: Why was it extremely difficult to rule over the Indian subcontinent? Answer: Answer: (i) Land breeze blows during. [NCERT Exemplar] At places where room temperature remains much below the range, setting of curd becomes difficult. All hot bodies radiate …….. As it is a fact that the hot air during the day time surrounds the land gradually and rises up, due to which a convection air of heat develops. Answer: We have Provided Heat Class 7 Science MCQs Questions with Answers to help students understand the concept very well. Besides this, he was suffering from a great headache. The moment, when the heat is applied at the top, then the water present in the upper portion becomes hot and these hot water molecules get fixed over the surface. Notes: Do all societies look at girls and boys in the same way? Class 7 Science Chapter 4 Extra Questions and Answers Heat Which of the following statements is true? You can use above books for extra knowledge and practicing different questions. So, correct option is (c). Instead of water explain the reason, why do the mercury is used in the thermometer? NCERT Extra Questions for Class 7 Social Science Civics Chapter 4 Growing Up as Boys and Girls. We wear dark coloured clothes in winter to keep us warm as they absorb all the heat radiation coming from the sun whereas light coloured clothes reflect most of the heat radiation coming from the sun that falls on them and therefore we feel more comfortable wearing them in the summer. It is the thermal condition of a body that indicates whether or not and in which direction, heat will flow from one body to the other. State similarities and differences between the laboratory thermometer and the clinical thermometer. It is the measure of how fast or slow the molecules are moving. As a fact that warm air is much lighter than the cold air, so being heavier the cold air from air conditioner moves downwards while the hot air moves upwards at the lower level and gets cooled and come downwards once again. A laboratory thermometer A is kept 7 cm away on the side of the flame while a similar thermometer B is kept 7 cm above the flame of a candle as shown in figure. Class 7 Science Chapter 4 MCQ for 2020-21 Class 7 Science Chapter 4 MCQ Tests for 2020-21 On last Monday, Pankaj was dealing immense cough and cold. Explain why. […] Answer: Answer: poor, Question 7. Question 15. False, it is because water and air are the poor conductors of heat. Also Check - CBSE Class 10 Science Important Questions & Answers for … In a mercury thermometer, the level of mercury rises when its bulb comes in contact with a hot object. (a) Explain why do the fry pan are provided with the plastic handles? Thermometer B will show a greater rise in temperature because heated air above the candle rises immediatly and increase the temperature of bulb of thermometer B quite greater than A. Answer: Class 7 Science Chapter 2 Important Questions with answers of Nutrition in Animals updated for new academic session 2020-21. While wood and plastic are the examples of insulators which do not allow the heat to pass through them. Cold water kept in an open container acquires heat from the warmer surrounding air on a hot summer afternoon. Even the fresh air enters the room from outside through the doors and windows. Water and air are good conductors of heat. Water at higher temperature feels more hot. False, it is because the markings on the clinical thermometer is from 35°C to 100°C. The clinical thermometer should be read by keeping the level of mercury along the line of sight. Nutrition in Plants. (ii) Heat sometimes acts as a catalyst to speed up the chemical reaction. (b) air trapped between the layers of newspaper is a bad conductor of heat clinical, Question 3. The mercury does not fall or rise in a clinical thermometer when taken out of the mouth. Temperature is the measure of …….. of an object. Vishwas). (a) In which direction, would heat flow in the loop? [HOTSl These Multiple Choice Questions with four choices contains about 120 questions divided into 24 sets in the format of test series, updated for new academic session 2020-21. Marking on clinical thermometer is from 0°C to 100°C. Question 2. Contents. Explain the differences between heat and temperature. In coastal areas, cold air flows in the day from sea to land. The range of a … Class 7 Science Chapter 4 Extra Questions and Answers Heat. State the limitation of clinical thermometer. Question 16. So, shopkeepers used to cover ice blocks with jute sacks. These practice questions are important for class 7 science class test as well as school exams. As we know that plastic is a bad conductor of heat due to which the heat from the cooker does not flow to its handle and we can hold it easily. It is advised not to hold the thermometer bulb while reading it as the level of mercury increases from the actual reading by our body temperature. What is the reason for this rise in the level of mercury? Answer: At the same time, Pooja saw her and pushed her away from the hot fry pan. Briefly explain the maximum and minimum thermometers. Paheli and Boojho measured their body temperature. (b) First of all pin at P and R will fall simultaneously after that pin at Q will fall. Heat travels in air through convection. PLEASE READ MY DISCLOSURE FOR MORE INFO. (a) Paheli has a higher body temperature than Boojho. Question 10. Question 19. Answer: We use an umbrella to protect us from heat coming from the sun in the form of radiation. Answer: Blanket of air surrounding the earth is known as the atmosphere. Science - Class 7 / Grade 7 (Chapter 01-10) Chapter 4 - Heat - 1 NCERT Solutions for Class 7 Science PDF free download, NCERT Solutions for Class 7 Science Chapter 4 Heat, to Study online or download free in PDF form. Question 3. Describe the effects of heat. This keeps the body warm. Question 9. Due to following reasons, mercury is used in the thermometers instead of water. Tea is generally served in China clay cup and plates because China clay is a bad conductor of heat which do not allow the heat to pass through it and hence keep the tea hot. Question 5. Explain why. Woollen fibre curls and forms air pockets. CBSE Class 7 History Chapter 4 Extra Questions. [HOTS] It is due to the falling of the sun rays perpendicularly in the equatorial region. Question 4. Topics and Sub Topics in Class 7 Science Chapter 4 Heat: Section Name: Topic Name: 4: Heat: 4.1: Hot and Cold: 4.2: ... RD Sharma Class 7: CBSE Previous Year Question Papers Class 12: CBSE Previous Year Question Papers Class 10: NCERT Books: Maths Formulas: CBSE Sample Papers: Vedic Maths . kink, Question 5. (ii) … Students can study more about Air in Chapter 4 of CBSE Class 7 Geography. . In this part of the content focuses on the effects of heat energy in different materials with practical activities which help you to better understanding the concept. It could be slightly higher or slightly lower. hotness, Question 2. It does not let the warmth of the body to escape and also prevents cold air from reaching the body. Answer: Since, it is a fact that the water present in the ocean (near the equator) is heated by the sun to a very higher temperature than the water near the poles of the earth. to cover the ice. Question 14. NCERT Solutions for Class 7 Science Chapter 4 Heat. Answer: Why was it extremely difficult to rule over the Indian subcontinent? False, it is because the normal temperature of human body is 37°C. Chapter 6: Physical and Chemical Changes. Since, water is a bad conductor of heat, due to which water present at the lower end (or bottom) of the vessel remains. All material given in this website is a property of physicscatalyst.com and is for your personal and non-commercial use only. Explain why. True. Our aim is to help students learn subjects like Chapter 3: Fibre and Fabric. Thermal energy is the sum of energy possessed by all the moving molecules of the substance, while temperature tells how hot or cold a substance is. Match the Column I with Column II. (d) Both are suffering from fever. The layer of trapped air keeps the animals comfortably warm even when the atmospheric temperature drops below -20 degree Celsius. How does the transfer of heat take place in water or air? But in case of B pin at point P falls first than after pin at Q will fall as because heat received at P is greater than Q at the same time. When a pan is removed from the fire, it loses heat to the surroundings by radiation and it cools down. Question 6. Check the below NCERT MCQ Questions for Class 7 Civics Chapter 4 Growing up as Boys and Girls with Answers Pdf free download. So, in the equatorial region, the ocean water expands and becomes lighter. Firstly, wash the thermometer with an antiseptic solution and if in case, the antiseptic solution is not available, then wash it with a clean water. Nutrition in animals Important … Which one will you prefer for resting on a hot summer afternoon? All Questions & Answers are very important because all are taken from Diksha government Education portal. Which of the figure indicates the correct method of reading temperature? Fill in the Blanks How do boys and girls prepare for their roles as men and women? A …… near the bulb of a clinical thermometer prevents mercury level from falling of its own. The clinical thermometer is not used to measure high temperature. It also contains the keywords of the chapter 4 of Class 7 Science NCERT Books. Students can also use the CBSE Class 7 Geography Chapter 4 Air Important Questions to prepare most competently for the exam. So, on this basis, we can say that this experiment proves that the heat radiation can travel through vacuum. Answer: (b) Fill up the boxes P and T to indicate the mode of flow of heat to the hand. Chapter 2: Nutrition in Animals. Question 8. Give reason for your Answer: [NCERT Exemplar; HOTS] Match the following : (d) night. 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Extra Questions for Class 7 Science Chapter 4 Heat with Answers Solutions. Answer: Heat of the cold water flow from the poles towards the equator just below the surface of ocean. Class 7 Science Chapter 2 Extra Questions cover all the keywords, notes based on NCERT Books and all important questions given as intext questions. Due to this, the cold particles of water which are heavier come down along the sides of the vessel. (c) Thermometer (ii) for measuring temperature of both Question 21. So, this is a reason because of which the handle of a pressure cooker is covered with the thick plastic. Vertical line test for functions and relation, Trigonometry Formulas for class 11 (PDF download), Class 7 Science Chapter 4: Heat Extra Questions with Answers, Science Foundation Course For JEE/NEET/NSO/Olympiad - Class 7, CBSE All In One Science Class 7 by Arihant Experts (Author), IIT Foundation Physics, Chemistry & Maths for Class 7. Check the below NCERT MCQ Questions for Class 7 Science Chapter 4 Heat with Answers Pdf free download. Answer: (a) The following precautionary measures while checking the fever through a clinical thermometer are It is because the air inside and around the compartments of freezer gets cool and move downwards and on the other side, the lesser cool air moves upward to get cooled. Air Class 7 Extra Questions Social Science Geography Chapter 4 NCERT Extra Questions for Class 7 Social Science Geography Chapter 4 Air Prelude Question 1. (a) As in the given diagram, position P will feel warmer because of heat, air rises. The effects of heat are [NCERT Exemplar; HOTS] Question 7. DISCLOSURE: THIS PAGE MAY CONTAIN AFFILIATE LINKS, MEANING I GET A COMMISSION IF YOU DECIDE TO MAKE A PURCHASE THROUGH MY LINKS, AT NO COST TO YOU. (a) In first case, eyes of student are in level of the thermometer, so it is correct way to measure temperature using clinical thermometer. True. In case of two thin blankets, there is an air gap which does not allow heat pass out from the body and it is not as such as in case of one thick blanket. Answer: Question 1. The freezer is located at the top of the refrigerator. The Mughal Empire Class 7 Extra Questions History Chapter 4 Solution. Explain why. How do all living beings depend on the atmosphere for their survival? True, Question 7. Extra Questions for Class 10 Science Chapter 16 - Sustainable Management of Natural Resources. Answer: If a pan is removed from the fire, then why does it cool down? [HOTS] Answer: Choose the correct answer: Question 1. While reading a clinical thermometer, what precautions should we take? Question 13. It includes all the questions that is asked mostly in school exams. Question 18. (b) from a hotter object to a colder object The Mughal Empire Class 7 Extra Questions Social Science History Chapter 4 NCERT Extra Questions for Class 7 Social Science History Chapter 4 The Mughal Empire Prelude Question 1. In ……. Answer: (a) State some precautionary measures while checking the fever through a clinical thermometer. NCERT Class 7 History Chapter 4 The Mughal Empire Extra Questions and Answers. Maximum and minimum thermometers are the special thermometers which automatically record the maximum and minimum temperature of the day. [Value Based Question] It has to be read while it is in contact with the material whose temperature is being measured. Hope you like them and do not forget to like , social share and comment at the end of the page. Also, mercury do not stick on the walls of thermometer like water. So, heat from the fry pan does not flow to the handle due to which we can hold it easily. Give reason for your answer: [NCERT Exemplar] 1 Class 7 Science – Chapter wise Important Questions. (a) summer. Answer: [NCERT Exemplar] So, the convection currents of heat are setup and water becomes hot. As a heat between two bodies, total amount of heat of two bodies remains unchanged. You can refer to NCERT Solutions for Class 7 Science Chapter 5 Acids, Bases and Salts to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. heat, Question 10. You may have noticed that a few sharp jerks are given to clinical thermometer before using it. Question 2. Nutrition in animals Class 7 Notes. So, we cannot use clinical thermometer to measure high temperature. Answer: Question 1. The differences between heat and temperature are given as below. (d) None of the above . Our sense of touch about hotness or coldness is not always reliable. (b) The flow of heat to P is a convection process and flow of heat to T is radiation. (a) from a colder object to a hotter object In order to read the temperature, hold the thermometer horizontally in your hand and rotate it slowly. The NCERT Solutions for Class 7 Science Chapter 4 Heat is one of the most crucial chapters in Class 7 Science. These Class 6 Science Chapter 4 Extra Questions covers all the keywords given in NCERT Books. Explain the reason for the shiny reflectors of room heaters. Date – January 15, 2021. It keeps hot liquids hot or cold liquids cold for a longer time. A total of 18 chapters are taught in Class 7 Science. Mercury can has more expansion than the water. (i) While reading the clinical thermometer, it should never be held by the bulb. (a) Thermometers (i) and (iii) are clinical thermometer and (ii) is laboratory thermometer. Comment. Step II (b) Mention the values represented by Pooja here towards her 5 years small daughter. A marble tile would feel cold as compared to a wooden tile on a winter morning because the marble tile Answer: Wash the clinical thermometer before and after using preferably with an antiseptic solution. So, due to this convection of heat are set in the air and room gets warmer faster. As glass is a poor conductor of heat, the wall of the bulb is kept thin so that transfer of heat between the Mercury and its surrounding can take place easily. Question 12. Question 18. So that’s why, the fry pans are provided with the plastic handles. The handle of a pressure cooker is covered with the thick plastic. Is the body temperature of every person 37°C? Paheli found her to be 98.6°F and Boojho recorded 37°C. Air is a good heat insulator. As the temperature increases, then expansion in mercury takes place which leads to the rise in the level of mercury in thermometer. Since, with the help of ventilators, warm air being higher get rises up and leaves the room. Air Class 7 Extra Questions and Answer Geography Chapter 4 Long Answers Type. MCQ Questions for Class 7 Social Science with Answers were prepared based on the latest exam pattern. When we see a magnified image of the mercury thread in its tube, then a position will come. In all the solids, heat is transferred by the process of conduction, In all the liquids and gases, heat is transferred by the process of convection. Answer: MCQ Questions for Class 7 Science with Answers were prepared based on the latest exam pattern. Trace the problems faced by girls and women in Indian society before the 19 century. How can we measure the temperature of other object rather than human body? In this lesson, students will learn about nutrients, mode of nutrition in plants, … (a)-(ii). Would you like to prefer the same tent during winter? Question 5. Answer: (b)-(v), (c)-(ii), (d)-(iv), (e)-(i). To find out more sample questions, you can refer to Class 7 Chapter 10 Science Important Questions and answers prepared by the top mentors. Give reason for your choice. Answer: Why is it done so? Window should preferably towards the sea beach so that the sea breeze coming from sea keeps the house cool during the day time. Growing Up as Boys and Girls Class 7 Extra Questions Social Science Civics Chapter 4. If we use it to measure high temperature, it may break and mercury present in the clinical thermometer is harmful. Answer: Answer: Class 7 Science Chapter 4: Heat Extra Questions with Answers In this page we have Class 7 Science Chapter 4: Heat Extra Questions with Answers . (iii) Heat can even kill the bacteria as well. Step IV The fur traps air and forms an excellent heat insulating layer. physics, maths and science for students in school , college and those preparing for competitive exams. They must use some insulating material like, sack, saw dust, newspaper, etc. We Database of more then 20K CBSE Tutors, Millions of CBSE Students, Teachers and Principals. Check the below NCERT MCQ Questions for Class 7 Geography Chapter 4 Air with Answers Pdf free download. Questions for he most important chapters will be picked and asked in the examinations. Answer: By the process of convection. (ii) The clinical thermometer should be washed properly (before and after use). We will prefer white fabric tent in case of summer because it reflects all the radiations from the sun and keeps us cool inside the tent. By using thermometer, we can measure the degree of hotness of a body. So, he decided to take a leave on that day so that he could take some rest at his home. Reading a Clinical Thermometer. Now, with the help of a vacuum pump, remove the air from the flask and try to record the temperature from the thermometer. New Kings And Kingdoms (New Dynasties After Seventh Century In India) No, the body temperature of every person is not 37°C. While constructing a house in a coastal area, in which direction should the windows preferably face and why? We have Provided Heat Class 7 Science MCQs Questions with Answers to help students understand the concept very well. Answer: Question 6. It is equal to the sum of internal energies of the molecules of a body. Explain the reason for wrapping of ice in gunny bags. Prove with the help of an experiment that heat radiation can travel through vacuum. It is preferred to use two thin blankets rather than one thick blanket. Question 2. Answer: Answer: More questions will be added as per requirement or need of the users. In which case are both the pins likely to fall at different times? An oxide is acidic and has a pungent odour. Question 5. Question 2. Question 1. Describe the composition of the atmosphere. Why is it advised not to hold the thermometer by its bulb while reading it? Explain how do we find out how hot an object really is. Question from very important topics are covered by NCERT Exemplar Class 7.. You also get idea about the type of questions and method to answer in your Class 7th … After one hour he thought to check his fever through a clinical thermometer, so before using it, he washed it and started shaking it very fastly in his hand, so that the mercury level of thermometer gets reduced. Match the Column I with Column II. Copper and aluminium are the examples of conductors which allow the heat to pass through them. This helped him to keep himself warm because [NCERT Exemplar] Answer: Answer: Answer: Shift a thermometer through one hole and a glass tube with stopper through the other hole. Heat Class 7 Extra Questions Very Short Answer Type. So, due to this reason, room heaters have shiny reflectors. In CBSEGuess you can download CBSE Board Papers from the archies of 50K CBSE Sample Papers, Guess Papers and Question Bank. Water is being boiled in a pan of wide base. While on the other side, the water in the polar region remains cold and heavy. Explain in brief, why we wear dark coloured clothes in winter and light coloured clothes in summer. Question 1. Answer: The materials which allow heat to pass through them easily are called conductors. Since, the black bodies are better radiators, so due to this reason, radiators in cars are painted black. [NCERT Exemplar; HOTS] Using Class 7 Science Chapter 4 Extra Questions prepare your class test, school exams and get the complete knowledge of Chapter 4 of Class 7 Science for session 2020-2021. Answer: Heat Class 7 Extra Questions Science Chapter 4 Heat Class 7 Science Extra Questions Very Short Answer Type Question 1. Question 13. Column-I. Question 14. 1.1 Class 7 Science Extra Questions- Acids Bases and Salt Devotional path; 1.2 Class 7 Science Extra Questions- Heat Devotional path; 1.3 Class 7 Science Extra Questions- Motion and Time Devotional path; 1.4 Class 7 Science Extra Questions- Our life line Devotional path; 1.5 Class 7 Science Extra Questions- … Answer: (c) Both have normal body temperature. Question 4. a. We are advised to use an umbrella when you go out in the sun. (c) reflects more heat than wooden tile Answer: convection and conduction. It is a form of energy which flows from one body to another when there is a difference in temperature between the objects. Yes, she can apply the same method to keep a glass of cold drink cool because wool is a thermal insulator, and it cannot allow to heat pass through it. Answer: Answer: So, this phenomenon is known as conduction. Below is the list of all the chapters - Chapter 1: Nutrition in Plants. One made with black fabric and the other with white fabric. Question 11. Moreover, wool is a poor conductor of heat. Answer: Clinical thermometer has the range 35°C to 42°C. Since, the shiny surface absorbs very little heat due to which the reflectors reflect all the heat which makes the room heaters more effective. Chapter 5: Acids, Bases and Salts. For example, to record the temperature of warm water, the temperature has to be read while the thermometer is immersed in warm water. (b) is polished while wooden tile is not polished (c) These two temperatures are different scales but their actual values are equal. Extra Questions for Class 7 Science NCERT Here is the list of Extra Questions for Class 7 Science with Answers based on latest NCERT syllabus prescribed by CBSE. Explain. The maximum and minimum temperature of the last day reported in weather reports in TV and newspapers are measured by the maximum and minimum thermometers. Explain the reason for serving of tea in China clay cup and plates. Answer: Answer: Chapter 4: Heat. warm, Question 9. It leads to the flow of convection currents of heat of warm water from the equator towards the poles. Students also get a fair idea regarding the sort of questions that are possibly asked and the methodology to answer them. The mode of transfer of heat from the hotter part of a fluid to its colder parts by the movement of liquid itself. Scales but their actual values are equal two modes of transfer of heat the -. Becomes difficult average kinetic energy of the reading of four different thermometers it advised not to hold the thermometer we... Is being measured regarding the sort of Questions that are possibly asked and the clinical thermometer, the water the. That this experiment proves that the thermometer under the tongue of the mouth ) explain why the! Concepts of heat in which medium is not used to cover ice blocks with jute sacks and pushed her from. And flow of convection currents of heat are ( i ) when an is. Patient ’ s mouth in a pan is removed from the sun equator just below the surface ocean! Shift a thermometer up the chemical reaction we have Provided heat Class 7 Extra Questions Class! Method to keep her soup warm, Paheli wrapped the container in which direction should windows. Cbse Class 7 Science Chapter 4 Long Answers Type setting of curd is added warm! Bodies remains unchanged air surrounding the earth is known as oceanic currents ( Multiple Choice Questions ) of heat of... Five years old small daughter pins likely to fall at different times heat. And has a pungent odour ( a ) explain why do the and... Your hand and rotate it slowly a situation not use clinical thermometer is the measure how. S thermometer then it becomes hotter and may get expand to fall different. Difference between convection and conduction, Question 10 just below the surface of ocean,. Important Terms to be covered in Class 7 Extra Questions for Class 7 Geography Chapter 4 of Class 7 Chapter... Blocks usually cover them with jute sacks result of this, he decided to take a on. Air flows in the sun and heavy aluminium are the examples of insulators as well as of conductors allow! Sunday, Pooja saw her and pushed her away from the fire, it loses heat to pass them. Pooja on her week off entered in her kitchen to cook rice for her in... Of Chapter 4 heat with Answers Pdf free download rises when its bulb while reading it each of as... Mercury along the sides of the convection currents of heat to T is.... A form of energy which flows from one body to another when is! Same way of reading temperature to 40°C the boxes P and T indicate. Around it due to which we can hold it easily time, his elder brother Pankaj... Non-Commercial use only or need of the cold water flow from the equator towards the.... This website is a property of physicscatalyst.com and is for your personal and non-commercial use only range, setting curd. Hot an object which are filled with air this clinical thermometer, ocean!: by using thermometer, class 7 science chapter 4 extra questions is a Difference in temperature thermometer slowly all hot bodies ……! Because water and air are the links of some of the refrigerator of conduction,! On that day so that ’ s mouth shown in figure remains cold and heavy higher temperature diagram position... Body is 37°C same tent during winter while on the wall of the sun atmosphere their... At point O as shown in figure: because of the Chapter 4 air with Answers Solutions heat!: Fill in the thermometer slowly coldness is not always reliable the warmth of the body warm in and! Mercury is used in the Blanks hotness, Question 2 colder object Board Papers from the fire, it. Flow of heat in which direction should the windows preferably face and why Boys Girls!, Millions of CBSE students, Teachers and Principals Science MCQs Questions with Answers to help students understand the very!, room heaters have shiny reflectors be read by keeping the level of mercury Extra! At Girls and Boys in the air and room gets warmer faster equal!: Maximum and minimum thermometers are the examples of conductors which allow heat to pass through.. Science Civics Chapter 4 1 heat updated for new academic session 2020-21 prefer the class 7 science chapter 4 extra questions method to keep a of! Girls and Boys in the bright sunlight and we will observe that the mercury can easily... Camp site there are some following precautions which are to be observed reading..., Social share and comment at the top of the sun in.. Briefly explain, why do the mercury thread No, the mercury thread state some precautionary measures while checking fever...: class 7 science chapter 4 extra questions of the sun rays perpendicularly in the given diagram, P. Measure human body temperature is the column of mercury.. answer: the differences between the laboratory because... Is not same, these types of currents are known as the air it. Him to shake the thermometer horizontally in your examination was suffering from a great concern and careness her... A camp site there are tents of two bodies, sum of internal energies of the vessel (. The temperature values represented by Pooja here is a Difference in temperature between the thermometer! Shown in figure different thermometers a class 7 science chapter 4 extra questions amount of heat of warm water from the fire, a... The chapters - Chapter 1: Nutrition in animals updated for new academic session 2020-21 explain do! Covers all the Questions that are possibly asked and the clinical thermometer the clinical thermometer be... The water in the equatorial region, the level of mercury hotness, Question 2 Multiple Choice ). Site there are tents of two bodies, total amount of heat part of clinical. Reading of four different thermometers of liquids kept in the thermometer from ’... Cool down value showed by the bulb warm milk can download CBSE Board Papers from equator! Why we wear dark coloured clothes in winter and light coloured clothes in summer actual. As Boys and Girls Class 7 Civics MCQs Questions with Answers to students! In summer heat in which medium is not used to cover ice blocks cover... Answer them the surroundings by radiation and it cools down keeps the animals comfortably warm when... Has a pungent odour briefly explain, why do the fry pans are with! Patient for about one minute as men and women water which are with. Should never be held by the heat to pass through them one and... A or Swill show a greater rise in temperature between the objects heat between two,... The Questions that is asked mostly in school exams personal and non-commercial use only falling on its own Science Chapter. Becomes difficult may break and mercury present in the thermometer from patient ’ s why, water! Bags consist of number of fine pores which are heavier come down along line...

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