8K Energy transfers - End of Unit Test

What are the units for measuring energy?

• newtons

• degress Celcius

• joules

• degrees Fahrenheit

If you leave a cup of hot tea standing in the kitchen for a whole day, what will happen?

• No energy will be transferred.

• It will gain energy from the air in the kitchen.

• Energy will be transferred from the tea to the air until the tea is the same temperature as the air

• Energy will be transferred from the tea to the air in the kitchen, so the tea will end up colder than the air in the kitchen.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The amount of thermal energy in an object depends on three things. Which of these things does it not depend on?

• its mass

• its colour

• its temperature

• the material it is made from

Tags

NGSS.MS-PS3-3

Which statement about evaporation is not true?

• When some of a liquid evaporates, the liquid left is warmer than before.

• Evaporation can happen at any temperature at which the substance is a liquid.

• When some of a liquid evaporates, it is the particles moving the fastest that escape and form a gas.

• Sweating cools us down when the sweat evaporates.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Infrared radiation can travel through:

• transparent objects only.

• opaque objects only.

• empty space only.

• empty space and transparent materials.

Tags

NGSS.MS-PS4-2

When one end of a piece of metal is heated:

• the particles vibrate less and so the particles get closer together.

• the particles vibrate more and the vibrations are passed from particle to particle.

• the energy does not move through the metal.

• the particles get bigger.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Solids are better heat conductors than liquids or gases because:

• the particles are closer together in gases.

• the particles are closer together in liquids.

• the particles are closer together in solids.

• the particles in a solid cannot move.

Tags

NGSS.MS-PS3-4

Why does the cold air near the ice lolly move downwards?

• It is colder and denser than the air further away from it.

• It is warmer and denser than the air further away from it.

• It is colder and less dense than the air further away from it.

• It is warmer and less dense than the air further away from it.

Tags

NGSS.MS-ESS2-6

Which list of materials shows only insulating materials?

• wool, feathers, copper

• feathers, wood, carpets

• iron, copper, steel

• plastic, aluminium foil, wood

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Which statement is the best explanation for why many insulating materials contain trapped air?

• trapping the air stops energy being transferred by convection

• air is a poor conductor

• trapped air makes the material lighter

• gases are poor conductors and they cannot transfer energy by convection if they cannot move.

Tags

NGSS.MS-PS3-3