Unit 4: Heat Transfer

Which way would the energy transfer if there was a cup of ice water outside in July?

• Energy will not transfer

• Both directions

• From the water to the air

• From the air to the water

Heat transfer is REALLY neat :) it always flows from...

• cold to hot

• high energy to low energy

• outside to inside

• hot to cold

Why does hot chocolate cool down when you pour cold milk into it?

• Energy is transferred from the hot chocolate to the milk

• It doesn't cool down

• Energy is transferred from the milk to the hot chocolate

• Energy is transferred from the hot chocolate to the cup

In which direction does energy flow?

• In all directions

• high to low

• energy does not flow

• low to high

Conservation of Energy states that energy cannot be created or destroyed, only _____________.

• Created

• Destroyed

• Transferred

• Lost

If a sample of matter has a high amount of temperature, its ________________ is also high.

• Temperature

• Heat

• Kinetic Energy

• Heat transfer

If you hold an ice cube in your hand, why does it melt?

• Heat transfers from the ice cube to your hand

• Heat transfers from the ice cube to the air

• Heat transfers from your hand into the ice cube

• Heat does not transfer, ice always melts

When does energy flow from a cold object to a hot object?

• Never

• When one object is really cold

• It depends on how much energy there is

• When one object is really hot

What is evidence that a transfer of energy has occurred?

• Color change

• Formation of a new solid, liquid or gas

• Noticeable smell

• Temperature change

Earth's atmosphere is mostly heated by...

• Conduction

• Radiant energy

• The sun

• Water vapor and CO2