Air acts as insulator of heat. to the surroundings is radiation. Answer: In places of hot climate it is advised that the outer walls of houses be painted white. It has a scale from 35°C to 42°C. (Refer fig 4.3 in the text p.no. The temperature of the mixture will be Ensure that it falls below 35°C. Draw the neat diagram and Label the parts. This mode of heat transmission is known as Convection. Mark where the heat is being transferred by conduction, by convection and by radiation. What are Conductors ? Question 5. Draw a neat diagram and explain the flow of heat through a metal strip. (d) increase the temperature of both. The use of the thermometer depends very much on the reason why it was manufactured. Observe. Question 1. How do you measure the temperature of the person ? This is the temperature of that person. (d) copper is easier to clean than the stainless steel. Students can Download Chapter 4 Heat Questions and Answers, Notes Pdf, KSEEB Solutions for Class 7 Science, Karnataka State Board Solutions help you to revise complete Syllabus and score more marks in your examinations. It has a scale from 35°C to 42°C. Look at Fig. Handle the thermometer with care. Save my name, email, and website in this browser for the next time I comment. It has a bulb at one end. Question 3. The Sun heat is also transfer through radiation because most part of the space between the earth and the Sun there is no media or air. When we sit in front of a room heater, we get heat by radiation. Define Sea breeze. Mercury is used in both thermometers to measure temperature. Wash the thermometer with an antiseptic solution. Question 11. This is called the Sea breeze. Answer: Clinical thermometer . What are Insulators ? This bulb contains mercury. We can say that it absorbs less amount of heat and keeps the house cool. (a) flow from iron ball to water. Fill in the blanks : Question 12. Answer: Transfer of heat from hot plate to pan is by conduction. Kink prevents the mercury present in the capillary to fall back in the bulb. (d) No medium is required for transfer of heat by the process of Radiation. The clinical thermometer is used to mea sure the temperature of human body only. Match the following : (c) Temperature is measured in degree Celsius. Take the liquid in a beaker. Answer: Question 4. A labeled diagram shows an image of the device and all parts including he tube and bulb are labeled. (d) does not become cold, Question 11. It is the land breeze. Question 1. Clam the rod to a stand or place one end of the rod in between two bricks. So it seprates the mercury at high temperature and cool mercury and allows the user to note the reading when the thermometer is taken out. Clinical thermometers are meant for clinical purposes. An iron ball at 40°C is dropped in a mug containing water at 40°C. Answer: Draw the diagram of a clinical thermometer and label its part what is the use of kind in clinical thermometer - 5292232 (d) between 30°C and 50°C. Heat is always transfer from hot, bodies to cooled bodies. Dip the thermometer in the liquid so that the bulb is immersed in the liquid but does not touch the bottom or the sides of the container. 5. Observe the movement of mercury in the thermometer, wait till the mercury thread becomes steady. The materials which allow heat to pass through them easily are Conductors, eg : All metals. One litre of water at 30°C is mixed with one litre of water at 50°C. Transfer of heat within water is by convection. ii – c, The normal human body temperature is 37˚C; which can fluctuate between the ranges 35˚C to 42˚C. Answer: Answer: Question 2. Read the thermometer keeping the level of mercury along the line of sight. Question 10. All metals are good conductors of Heat. Question 8. Answer: Answer: The other equipments should arrange as in the figure. Answer: Black or Dark coloured objects absorbs more heat. Answer: (c) 20°C Question 5. Thermometer should be washed before and after use, preferably with an antiseptic solution. Write a neat diagram of clinical thermometer and label the parts. Answer: A clinical thermometer consists of a long, narrow, uniform glass tube. A wooden spoon is dipped in a cup of ice cream. Eg : Wood, plastic etc.. Question 4. Question 6. Define Convection with an experiment. 2. This is Celsius scale, indicated by 0°C. The hot air rises up and cooler air from the sea rushes towards the land. (a) copper bottom makes the pan more durable. The process by which heat is passed from the hotter end to colder end in solids. Answers: 37). (e) A cold steel spoon is dipped in a cup of hot milk. 2nd PUC Model Question Papers with Answers, 1st PUC Model Question Papers with Answers, KSEEB SSLC Class 10 Social Science Solutions, KSEEB Solutions for Class 9 Social Science, KSEEB Solutions for Class 7 Science Chapter 15 Light, KSEEB Solutions for Class 7 Science Chapter 16 Water: A Precious Resource, KSEEB SSLC Class 10 Maths Solutions Karnataka State Syllabus, KSEEB SSLC Class 10 Science Solutions Chapter 16 Sustainable Management of Natural Resources, KSEEB Solutions for Class 10 Maths Chapter 9 Polynomials Ex 9.4, KSEEB Solutions for Class 10 Maths Chapter 1 Arithmetic Progressions Ex 1.4, KSEEB Solutions for Class 10 Maths Chapter 14 Probability Ex 14.2, KSEEB Solutions for Class 10 Maths Chapter 3 Pair of Linear Equations in Two Variables Ex 3.7, KSEEB Solutions for Class 10 Maths Chapter 2 Triangles Ex 2.6, KSEEB SSLC Class 10 Maths Solutions Chapter 10 Quadratic Equations Ex 10.4, KSEEB SSLC Class 10 Maths Solutions Chapter 8 Real Numbers Ex 8.2, KSEEB SSLC Class 10 Maths Solutions Chapter 1 Arithmetic Progressions Ex 1.2, KSEEB Solutions for Class 10 Maths Chapter 15 Surface Areas and Volumes Ex 15.5. This bulb contains mercury. Take a round bottom flask. give example. The air gets trapped between two layers of warm clothes. (a) becomes cold by the process of conduction. The temperature should always be stated with its unit °C. (b) Temperature of boiling water cannot be measured by a Clinical thermometer thermometer. Question 7. Give example. During the day the land gets heated faster than the water. Answer: Poor conductors are known as insulators. Clinical thermometer has a kink near the bulb while there is nokink in the laboratory thermometer. Answer: (a) The hotness of an object is determined by its Temperature. Fix a few small wax pieces on the rod. 3. Fill it with \(\frac{2}{3}\) part of water. This experiment shows that heat is transferred from the hotter end to the colder end. Now place the thermometer under the tongue of the person. Laboratory thermometer has temperature range from -10°C to 110°C where as clinical thermometer has temperature range from 35°C to 42°C. Write the construction of clinical thermometer. Lesson Plan in Mathematics Grade 5 Grade V – Acacia (7:50-8:50) Molave (8:50-9:50) I. (b) not flow from iron ball to water or from water to iron ball. (d) does not become cold., Why a clinical thermometer has a kink? The digital thermometer do not use mercury. Similarities: Question 2. (f) Clothes of Dark colours absorb heat better than clothes of light colours. 6. Write the construction of clinical thermometer. Question 9. Clinical Thermometer. (c) copper is a better conductor of heat than the stainless steel. After one minute take the thermometer out and note the reading. Insulators : wood and plastic. Don’t hold the thermometer by the bulb while reading it. Laboratory thermometer is used to measure temperature of different objects in factories and laboratory where as clinical thermometer is used to measure the temperature of human beings only. A clinical thermometer is used to measure body temperature. This layer prevents our body heat to escape in the surroundings. Draw a neat labeled diagram of a clinical thermometer and explain its construction - Science - Heat At night the water cools down more slowly than the land. Notify me of follow-up comments by email. Observe when water is heated near the flame gets hot and rises up. Answer: (b) becomes cold by the process of convert The 4 most important are: Question 13. Take a rod or flat strip of a metal. The transfer of heat without any media is called Radiation. Answer: Label the parts of the thermometer using the words from the box. How do you measure the temperature of the liquid ? Define Conduction. A clinical thermometer consists of a long, narrow, uniform glass tube. Conductors : copper, aluminium and iron.
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