" /> -->

#### Heat and Temperature Model Question Paper

7th Standard EM

Reg.No. :
•
•
•
•
•
•

Science

Time : 01:00:00 Hrs
Total Marks : 40
3 x 1 = 3
1. International unit of measuring temperature is __________

(a)

Kelvin

(b)

Fahrenheit

(c)

Celsius

(d)

Joule

2. The body temperature of a healthy man is;

(a)

00C

(b)

370C

(c)

980C

(d)

1000C

3. Mercury is often used in laboratory thermometers because it ___________

(a)

is a harmless liquid

(b)

is silvery in colour and is attractive in appearance

(c)

Expands uniformly

(d)

is a low cost liquid

4. 5 x 1 = 5
5. Doctor uses _____________ thermometer to measure the human body temperature.

()

Clinical

6. At room temperature Mercury is in _______________ state.

()

Liquid

7. Heat energy transfer from _______________ to ___________

()

hot and cold

8. -70C temperature is _______________ than 00C temperature.

()

less

9. The common laboratory thermometer is a ______________ thermometer

()

Celsius scale

10. 5 x 1 = 5
11. Clinical thermometer

12. (1)

A form of energy

13. Normal temperature of human body

14. (2)

100°C

15. Heat

16. (3)

37°C

17. Boiling point of water

18. (4)

Kink

19. Melting point of water

20. (5)

OOC

3 x 2 = 6
21. Jyothi was prepared to measure the temperature of hot water with a clinical thermometer. Is it right or wrong? Why?

22. What is the use of kink in clinical thermometer?

23. Why do we jerk a clinical thermometer before we measure the body temperature?

24. 2 x 3 = 6
25. 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.

26. The body temperature of Srinath is 990F. Is he suffering from fever? If so, why?

27. 3 x 5 = 15
28. Draw the diagram of a clinical thermometer and label its parts.

29. What must be the temperature in Fahrenheit, so that it will be twice its value in Celsius?

30. Go to a veterinary doctor (a doctor who treats animals). Discuss and find out the normal temperature of domestic animals and birds.