A21 SB2 Consolidation – week 32

What is temperature?

• The average speed of particles in a substance
• The amount of energy in an object's thermal energy store
• The amount of energy required to raise the temperature of an object
• The amount of heat transferred between two objects

What is the unit of measurement for temperature?

• Degrees Celsius
• Joules
• Meters
• Watts

What happens to the energy in an object's thermal energy store as it cools down?

• It disappears
• It is transferred to the surroundings
• It is converted into kinetic energy
• It is converted into potential energy

What is thermal equilibrium?

• When two objects are at rest
• When two objects are in contact
• When two objects have the same thermal energy store
• When two objects have the same temperature

What is the average speed of particles in a hot substance compared to a cold substance?

• Faster
• Slower
• Cannot be determined
• The same

What happens to the average speed of particles in a substance as it cools down?

• It increases
• It stays the same
• It decreases
• Cannot be determined

What is energy transfer by heating?

• The transfer of energy from a cooler object to a hotter one
• The transfer of energy from a hotter object to a cooler one
• The transfer of energy from one object to another without a temperature difference
• The transfer of energy from one object to another with a temperature difference

What is the effect of a greater temperature difference on energy transfer by heating?

• There is no effect
• Cannot be determined
• Energy transfer is faster
• Energy transfer is slower

What happens to an ice lolly on a hot day?

• It cools down
• It stays the same temperature
• It warms up
• Cannot be determined

What happens to a hot coffee on a cold day?

• It stays the same temperature
• It cools down
• It warms up
• Cannot be determined