_______ energy. Its main source is the sun, light bulbs, or fire.
luminous
______ energy is when heat is transferred from one object to another.
thermal
Humans have invented ______ to help them do tasks
machines
________ energy can be observed when an object changes position
mechanical
We hear energy as _____
sound
We feel energy as ______
heat
We can observe energy as _____ and _______.
light and movement
What kind of energy does a knife or wheel use?
mechanical energy
What kind of energy does a lightbulb use?
light energy
Luminous energy mainly comes from the _____.
sun
_______ energy can be stored in batteries. It is also found in storm clouds lightning.
Electrical
What kind of energy does an oven use?
thermal energy
______ energy is the energy stored in matter. Can be released as fuel or food.
chemical
light energy and thermal energy are kinds of ______ ________
electrical energy
Chemical energy is transformed into _____ when substances like petrol, gas or wood are burnt.
heat
Energy is everything that produces ____ or _______ objects
change, transforms