Energy Transfers and Efficiency

Which of these can happen to energy?

• Destroyed

• Created

• Converted

What type of energy is also called movement?

• Kinetic

• Chemical

• Gravitational Potential

• Elastic

Which type of appliance would convert electrical energy into sound energy?

• a speaker

• a microphone

• an amplifier

What type of diagram is used to show energy efficiency?

• Bar chart

• Sankey

• Flow diagram

Which arrow is bigger in a Sankey diagram for a filament lamp?

• Heat

• Light

• They are the same

What is the main useful energy transfer that happens in petrol cars?

• Kinetic to heat

• Kinetic to chemical

• Chemical to kinetic

What main energy transfer happens in many musical instruments?

• Sound to kinetic

• Electrical to kinetic

• Kinetic to sound

What is the main type of energy transfer in a catapult?

• Elastic potential to sound

• Elastic potential to kinetic

• Elastic potential to heat