Light
Sound
Motion
Simple Machines
Vocabulary
100
The type of object that lets some light pass through.
What is translucent.
100
The distance between one crest or trough to the next.
What is a wavelength.
100
A force that slows or stops motion between two surfaces that are touching.
What is friction.
100
A simple machine made up of two inclined planes.
What is a wedge.
100
A transparent object that separates white light into all the colors of the rainbow.
What is a prism.
200
This is formed when light strikes an opaque object.
What is a shadow.
200
The number of crests or troughs that pass by over a certain amount of time.
What is frequency.
200
A push or a pull.
What is a force.
200
A simple machine made up of an inclined plane wrapped around a column.
What is a screw.
200
To move back and forth quickly.
What is to vibrate.
300
A piece of curved glass, plastic or other material that refracts light.
What is a lens.
300
Matter through which sound travels (a solid, liquid or gas).
What is a medium.
300
A force that pulls objects toward each other.
What is gravity.
300
A simple machine made up of two cylinders that turn on the same axis.
What is a wheel and axle.
300
A device that changes a force.
What is a simple machine.
400
What an object does when it takes in some of the light that strikes it's surface.
What is absorbs it.
400
The type of sound made by an object that is vibrating at a fast rate of speed.
What is the high pitch.
400
The measure of speed in a certain direction.
What is velocity.
400
A simple machine made up of a slanted surface.
What is an inclined plane.
400
Another word for an object's location.
What is position.
500
These travel in straight lines in all directions, away from their source.
What are light waves.
500
The unit used to measure volume.
What are decibels.
500
A measure of the distance an object travels in a certain amount of time.
What is speed.
500
A simple machine made up of a stiff bar that moves freely around a fixed point.
What is a lever.
500
This type of lens is hollow or rounded inward.
What is concave.
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