Energy Transfers and Efficiency

Question	Answer
Which of these can happen to energy?	Converted
What type of energy is also called movement?	Kinetic
Which type of appliance would convert electrical energy into sound energy?	A speaker
What type of diagram is used to show energy efficiency?	Sankey
How do we calculate percentage efficiency?	(useful energy out / total energy in) x 100
Which arrow is bigger in a Sankey diagram for a filament lamp?	Heat
What are the units for energy?	Joules
What is the main useful energy transfer that happens in cars?	Chemical to Kinetic
What energy transfer happens in many musical instruments?	Kinetic to sound
What is the main type of energy transfer in a catapult?	Elastic potential to kinetic

Resource summary

	Created by lily bevan about 7 years ago