Pulls object to the center of the Earth.
What is gravity?
Seesaw is what simple machine.
What is lever?
Light bouncing back.
What is reflection?
What is travel in waves?
A simple machine makes it easier to do work.
What is decrease force needed to move an object?
Raising a flagpole simple machine.
What is pulley?
The closet door, sunglasses, and classroom window.
What is transparent, translucent, and opaque?
You hear sound with.
What is your ear?
Type of force being used when a class wins while playing tug-a-war.
What is unbalanced?
A wheelbarrow is a simple machine.
What is wheel and axle?
White light is a mixture of different colors.
What is white light passing through a prism?
Blowing on a ruler can or cannot change the sound.
What is cannot?
Force used when a ball is thrown into the air and falls to the ground.
What is gravitational?
What is screw?
A pencil in a cup of water shows.
What is refraction?
Sound is produced by.
What is balanced?
Inclined planes increase something to make it easier to move an object.
What is the distance?
Looking in the mirror shows.
What is reflection?
Sound can travel through.
What is solid, liquid, and gas?