IGCSE Physics Thermal

A liquid is a substance ...

• ... with a fixed shape and fixed volume

• ... with a fixed shape and a variable volume

• ... with a variable shape and a fixed volume

• ... with a variable shape and a variable volume

Which row in the table shows the correct name for the change of state indicated?

• from solid to liquid is called boiling

• from liquid to solid is called melting

• from liquid to gas is called freezing

• from gas to liquid is called condensing

Tags

NGSS.MS-PS1-4

A solid is heated until it starts to become a liquid. While it is melting, its temperature ...

• ... increases

• ... decreases

• ... stays the same

• ... expands

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

In the kinetic model, matter is pictured as consisting of particles. What does the space between the particles contain?

• water

• air

• vacuum

• more particles

Which one of the following statements about evaporation is not correct? When a liquid evaporates ...

• ...its volume decreases

• ... molecules with more energy leave the surface

• ... some of its molecules disappear

• ... its temperature decreases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Brownian motion occurs because ...

• ... tiny air molecules collide with larger particles

• ... molecules vibrate faster

• ... the molecules of a liquid are farther apart than in a solid

• ... molecules expand and take up more room

Tags

NGSS.MS-PS2-1

• block X

• block Y

• block Z

• they are all the same

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

Energy must be supplied to raise the temperature of a beaker of water. This energy ...

• ... is lost by convection

• ... increases the internal energy of the water

• ... is converted to temperature energy

• ... disappears as the temperature rises

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When a cooking pot is placed on a hot stove, energy passes through the pot into the food it contains. What is this an example of?

• expansion

• convection

• radiation

• conduction

When air is heated, it rises. This is because ...

• ... hot air rises

• ... the density of air decreases when it is heated

• ... hot air radiates heat

• ... there's no smoke without fire

Tags

NGSS.MS-ESS2-6

NGSS.MS-PS1-4