Homework Physics 8

Vocabulary Knowledge Rating Sheet: Physics

Word

Synonym/Explanation

Example in a Sentence

Wave, n.

A disturbance that transfers energy from one point to another through the air, water, etc.

When I broke my arm, X-rays waves were sent though my arm.

Magnet, n.

a mass of iron, steel, or alloy that gives off a magnetic field that attracts.

The magnet that is on my refrigerator is holding up a picture.

Entropy, n.

a measure of the unavailable energy in a closed system. Sometimes called disorder.

The second law of thermodynamics state that entropy increases in a system.

Electron, n.

A particle in an atom that has a negative charge. Revolves around the outside of the atom.

Hydrogen electrons combine with oxygen electrons to make water.

Circuit, n.

the complete path of an electric current, starting with a source of electric energy.

My car’s motor is connected to a circuit that is powered by gasoline.

Current, n.

a flow of electric charge

A current is run though wires on the telephone poles which enters my house.

Require, v.

to demand as necessary or essential.

The teacher required us to complete 8 homework assignments a night.

Policy, n.

a plan that states the general goals and acceptable procedures especially of a governmental body

LAUSD’s policy is that every child has a right to an education.