Forces and motion
Energy
Thermodynamics
Light and Sound
Electricity and Magnetism
100

A quantity that has both magnitude and direction.

What is a vector?

100
This mathematician discovered that the buoyant force on an object equals the weight of the fluid displaced by the object.
Who was Archimedes?
100
This quantity is equal to Work/Time.
What is power?
100
When your muscles move, chemical energy from the cereal you ate for breakfast is converted into this.
What is kinetic energy?
100
This is the maximum displacement of a wave.
What is amplitude?
200

The formula for calculating speed

What is "speed equals distance divided by time"?

200
This SI-unit of measure is used to express pressure.
What is a pascal?
200
The Kelvin scale is used to measure this.
What is temperature?
200
Photovoltaic cells convert this into electrical energy.
What is solar energy?
200
This unit is used to compare sound intensity levels.
What is a decibel?
300

Mass times acceleration equals this

What is force?

300
This upward force keeps an aircraft aloft.
What is lift?
300
This is the transfer of thermal energy with no overall transfer of matter.
What is conduction?
300
If you know the wavelength of an electromagnetic wave in a vacuum you can calculate this.
What is its frequency?
300
This is the lowest point of a wave below the rest position.
What is the trough?
400
This is the universal force that causes every object to attract every other object.
What is gravity?
400
This is the SI-unit of work.
What is the joule?
400
The total potential and kinetic energy of all the particles in an object describe this.
What is Thermal energy?
400
Antennas use these to send signals to television receivers.
What are radio waves?
400
This expands and contracts to control the amount of light entering the eye.
What is the iris?
500
This force opposes the motion of objects that touch as they move past each other.
What is friction?
500
This unit equals about 746 joules.
What is horsepower?
500
Atomic fission and fusion produce this type of energy.
What is nuclear energy?
500
When a beam of light enters a new medium at an angle, it changes direction, and this occurs.
What is refraction?
500
This type of lens causes light rays to diverge.
What is a concave lens?
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