Energy Flashcards
What is energy?
Energy is the ability to do work
What’s energy measured in?
Joules (J) or kilojoules (KJ)
What is the name of devices that change energy
Transducers
What are the four ways energy is needed by humans
It’s needed for :
Movement
Thoughts
Sleeping
Growing
What’s gravitational energy
The energy an object gains when it’s lifted higher
What’s elastic energy
Energy stored in a wound up or stretched spring
What’s kinetic energy
The energy an object has because it’s moving
What’s chemical energy
Energy stored in fuel, foods and batteries
What’s electrical energy
Carried with electrical current
What’s light energy
Allows us to see things around us
What’s heat energy
Makes things warmer, melts solids and boils liquids
What’s sound energy
Energy produced when an object vibrates and makes a noise
What kind of energy is a battery
Chemical
What energy is a elastic band
Elastic energy
What kind of energy is petrol
Chemical energy
