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HEAT TRANSFER AND SOUND

Total questions: 23

Worksheet time: 9mins

Name
Class
Date
1.

It is the main source of heat of the earth.

a)

sun

b)

moon

c)

star

d)

light bulb

2.

This method of heat transfer happens when two objects come in direct contact with each other.

a)

convection

b)

radiation

c)

conduction

3.

The amount of heat in a body or the degree of hotness or coldness is called _____________.

a)

heat

b)

energy

c)

temperature

4.

A method of heat transfer that depends upon the movement of the molecules in the material that is heated.

a)

convection

b)

radiation

c)

conduction

5.

The reflected sound is called an (a)  

6.

This refers to the loudness or softness of sound.

a)

pitch

b)

intensity

c)

quality

7.

Too much exposure to noise can lead to ____________.

a)

muteness

b)

deafness

c)

blindness

8.

Sound with an intensity of 120 decibels is barely heard.

a)

TRUE

b)

FALSE

9.

Piano, guitar and harp produce sound when they are ___________.

a)

struck

b)

blown

c)

plucked

10.

Trumpet, flute and whistle produce sound when they are ___________.

a)

struck

b)

blown

c)

plucked

11.

Cymbals, drums and xylophone produce sound when they are ___________.

a)

struck

b)

blown

c)

plucked

12.

When an object vibrates slowly, its pitch is low.

a)

TRUE

b)

FALSE

13.

What do we call an unpleasant sound?

(a)  

14.

Which is the most extreme effect of overexposure to the sun's radiant energy?

a)

dehydration

b)

intensity

c)

sun burn

d)

heat stroke

15.

What method of heat transfer is involved in the drying of fish under the sun?

a)

convection

b)

radiation

c)

conduction

16.

What method of heat transfer is involved in roasting lechon?

a)

convection

b)

radiation

c)

conduction

17.

What method of heat transfer is involved in frying an egg on a pan?

a)

convection

b)

radiation

c)

conduction

18.

It is the principle used in heating systems like electric heater and fireplace.

a)

convection

b)

radiation

c)

conduction

19.

Which is an example of conductor?

a)

cooking pot

b)

rubber

c)

wood

d)

plastic

20.

How does heat energy flow?

a)

from cold to hot objects

b)

from hot to cold objects

c)

from hot to hot objects

d)

from cold to cold objects

21.

The science of sound waves and their production, transmission, reception and control is called (a)   .

22.

It is the back and forth movement of molecules.

(a)  

23.

For 3 points, what do we call the instrument that measures temperature.

(a)