Show:
Sound and light
Force and motion
Solar System
Ecosystem
100
Travel in waves
What is sound?
100
They push
What is force?
100
It supports life 
What is earth?
100
Makes their own food 
What is producer?
200
A book?
What is opaque 
200
Pulls things to earth
What is gravity?
200
Gas giants
What is outer planets?
200
Animals being eatin
What is a prey?
300
It has no sound
What is light?
300
A ball falling down a hill
What is Motion?
300
Rocky planets
What is inner planets?
300
Eating something
What is a consumer?
400
What is black paper
What is absorb?
400
Push behind
What is pull?
400
Inner planets are called 
What is mecury,Venus,earth,mars?
400
An animal that hunts another animal
What is predator?