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2: Electricity
3: Changes Around Us
4: Cell Biology
5: Basis of Classification
6: Digital Painting
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Solutions for Chapter 1: Heat and Temperature
Below listed, you can find solutions for Chapter 1 of Tamil Nadu Board of Secondary Education Samacheer Kalvi for Science - Term 2 [English] Class 7 TN Board.
Samacheer Kalvi solutions for Science - Term 2 [English] Class 7 TN Board 1 Heat and Temperature Evaluation [Pages 10 - 11]
Choose the correct answer
International unit of measuring temperature is ______.
Kelvin
Fahrenheit
Celsius
Joule
In thermometer when bulb comes in contact with hot object, liquid inside it ______.
expands
contracts
remains same
none of above
The body temperature of a healthy man is;
0°C
37°C
98°C
100°C
Mercury is often used in laboratory thermometers because it ______.
is a harmless liquid
is silvery in colour and is attractive in appearance
Expands uniformly
is a low cost liquid
Which of the following temperature conversions is incorrect
K ( Kelvin) = °C ( Celsius) + 273.15
°C = -273.15, K = 0
°C = -123, K = +150.15
°C = +127, K = +400.15
°C = +450, K = +733.15
Fill in the blanks
Doctor uses ______ thermometer to measure the human body temperature.
At room temperature Mercury is in ______ state.
Heat energy transfer from ______ to ______.
-7°C temperature is ______ than 0°C temperature.
The common laboratory thermometer is a ______ thermometer
Match the following
| i. | Clinical thermometer | A form of energy |
| ii. | Normal temperature of human body | 100°C |
| iii. | Heat | 37°C |
| iv. | Boiling point of water | 0°C |
| v. | Melting point of water | Kink |
Give very short answer
Temperature of Srinagar (J&K) is -4°C and in Kodaikanal is 3°C which of them has greater temperature? What is the difference between the temperatures of these two places?
Jyothi was prepared to measure the temperature of hot water with a clinical thermometer. Is it right or wrong? Why?
A clinical thermometer is not used to measure the temperature of air, why?
What is the use of kink in clinical thermometer?
Why do we jerk a clinical thermometer before we measure the body temperature?
Give short Answer
Why do we use Mercury in thermometers? Can water be used instead of mercury? What are the problems in using it?
Swathi kept a laboratory thermometer in hot water for some time and took it out to read the temperature. Ramani said it was a wrong way of measuring temperature. Do you agree with Ramani? Explain your answer.
The body temperature of Srinath is 99°F. Is he suffering from fever? If so, why?
Give long answer
Draw the diagram of a clinical thermometer and label its parts.
State the similarities and differences between the laboratory thermometer and the clinical thermometer
Higher Order Thinking question
What must be the temperature in Fahrenheit, so that it will be twice its value in Celsius?
Higher Order Thinking question
Go to a veterinary doctor (a doctor who treats animals). Discuss and find out the normal temperature of domestic animals and birds.
Solutions for 1: Heat and Temperature
Samacheer Kalvi solutions for Science - Term 2 [English] Class 7 TN Board chapter 1 - Heat and Temperature
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Concepts covered in Science - Term 2 [English] Class 7 TN Board chapter 1 Heat and Temperature are The Temperature and a Thermometer, Measuring Temperature, Scales of Thermometers, Numerical Problems of Heat, Thermometer and Its Types.
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