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Worksheets

Heat and Light

Total questions: 10

Worksheet time: 3mins

Name
Class
Date
1.

What happens with the particles of objects when they are hot?

a)

They melt down

b)

They move faster

c)

The move slower

d)

They evaporate

2.

What kind of heat transmission is this?

a)

Conduction

b)

Convection

c)

Radiation

d)

Thermalation

3.

What kind of heat transmission is this?

a)

Conduction

b)

Convection

c)

Radiation

d)

Boilation

4.

How do we call the materials that don't let the heat transmit easily?

a)

Conductors

b)

Inconductors

c)

Insulators

d)

Translucent

5.

How do we call the change of state from solid to liquid?

a)

subilmation

b)

liquidation

c)

condensation

d)

melting

6.

Chemical changes in substances are changes caused by heat that...

a)

...can be reversed

b)

...can't be reversed

c)

...can be reversed if you cool down the substance

d)

...don't affect the substance

7.

Which of these is a natural source of heat and light?

a)

A light bulb

b)

The oven

c)

The microwave

d)

The Sun

8.

How do we call objects that don't let light pass through them?

a)

Transparent

b)

Translucent

c)

Shadower

d)

Opaque

9.

Light travels...

a)

In straight rays, by conduction

b)

In waves, by convection

c)

In straight rays, by radiation

d)

In circles, by contact

10.

What effect of light does this picture show?

a)

Reflexion

b)

Refraction

c)

White light

d)

Convection