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This invisible pull keeps us on the ground and makes things fall.
What is gravity?
This word means how fast something is moving.
What is speed?
A marble goes fastest when it rolls on this part of the track.
What is downhill?
Water, juice, and oil are all this state of matter.
What is a liquid?
This helps us see and can make shadows when something blocks it.
What is light?
This is what we call it when something is moving from one place to another.
What is motion?
This state of matter keeps its shape and doesn't flow.
What is a solid?
When a liquid gets cold enough, it does this and becomes a solid.
What is freeze?
Or, for double points:
What is solidification?
When a solid gets warm enough, it does this and becomes a liquid.
What is melt?
Or, for double points:
What is fusion?
This word means keeping something steady so it doesn't tip over.
What is balance?
A push or pull is called this.
What is a force?
This word describes how easily a liquid flows. Syrup has a lot of it, water has less.
What is thickness?
Or, for double points:
What is viscosity?
This object swings back and forth from a string or rod.
What is a pendulum?
This happens when sound bounces off a surface and comes back to you.
What is an echo?
This object stores energy and can power lights or toys.
What is a battery?
This force happens when two surfaces rub and slows things down. (It also creates heat.)
What is friction?
Air and helium are examples of this state of matter.
What is a gas?
This liquid floats on top of water.
What is oil?
Sound is made when something does this very quickly.
What is vibrate?
A pendulum swings back and forth in a repeating pattern. The time for one full swing is called this.
What is the period?
When a marble is rolling, it has this kind of energy.
What is kinetic energy?
At the very top of a hill, a marble has lots of this "ready-to-go" energy.
What is potential energy?
Oobleck can act like a solid when you hit it and like a liquid when you let it sit. This makes it a weird kind of material that isn't solid, liquid, or gas, but rather a...
What is a non-Newtonian fluid?
This part of a circuit opens or closes the path to turn something on or off.
What is a switch?
What is the center of mass?