8Ka-c Review

Choose the correct statements about 'Internal energy'

• Internal energy is measured in Joules (J)

• Internal energy is all of the energy of movement of the particles in a substance

• Internal energy is the same as temperature

• Increasing temperature will increase the internal energy of a substance

Internal energy is measured with a thermometer

• True

• False

Describe the energy transfer occuring in the picture

• The cold is going from the environment to the tea

• The cold is going from the tea to the environment

• The heat is going from the tea to the environment

• The heat is going from the environment to the tea

What will happen to the temperatures of the tea and the room in this picture if you left the tea out all day?

• The temperature of the tea and the room will increase

• The temperature of the tea and the room will decrease

• The temperature of the tea will increase and the temperature of the room will decrease

• The temperature of the tea will decrease and the temperature of the room will increase

Why does the temperature of a liquid decrease during evaporation?

• All of the particles turn from liquid to gas

• The fastest particles turn from liquid to gas

• Random particles turn from liquid to gas

• The slowest particles turn from liquid to gas

What are possible ways of transferring energy?

• Evaporation

• Radiation

• Conduction

• Convection

Which method(s) of energy transfer can happen WITHOUT direct contact of matter?

• Radiation

• Conduction

• Convection

Based on this infrared image here, select which statement(s) are TRUE

• The top of the tea pot is hotter than the bottom of the tea pot

• The hand holding the tea pot is emitting radiation energy

• The water being poured is hot

• the bottom of the tea cup is hotter than the bottom of the tea pot

Conduction transfers energy by...

• Emitting energy

• the fastest particles moving from the liquid to become a gas

• particles vibrating and hitting into each other

• The change in density that occurs during conduction moving the substance to a different place

Conduction happens best in solids because...

• The particles in solids are closer than the particles in liquids and gases

• The particles in liquids are unable to vibrate

• Gases are too light to do conduction

• Gases and liquids do not have particles