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11 Cards in this Set

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  • Back
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Benjamin Franklin discovered the form of energy produced by lightning. Experiments with lightning killed many people before he discovered that lightning is a form of _______.
Electricity
Used to turn on lights.
Oxygen, nitrogen, and carbon dioxide may be grouped together because at room temperature they are all a ________.
Gas
Used in cars.
What moves faster if the temperature of a metal pan is increased?
Molecules
Thicker as a solid than as a gas.
What does transparent mean?
Clear or see-through.
Think of a window.
The smallest quantity of an element is called a what?
An atom
It is round.
A bar magnet is placed on a table, and a sheet of blank paper is placed over the magnet. What could be sprinkled on the paper to show the magnetic field of the bar magnet?
Iron filings
Little metal particles.
A wheel barrow uses what two simple machines to make work easier?
Wheel and axle and a lever.
A) Gears and a lever
B) A wheel and axle and a wedge
C) A wheel and axle and a lever
Electric lights will not come on unless their electrical circuit becomes what kind of circuit?
A closed circuit
A) Series circuit
B) Closed circuit
C) Short circuit
Sound waves travel best through what?
Solids
A) Liquid
B) Gas
C) Solid
When a roller coaster picks up speed in order to be carried from one hill to another, it uses what kind of energy?
Kinetic energy
A.) Potential energy
B.) Kinetic energy
C.) Magnetic energy
When light hits an object, the rays can pass through it, bounce off it, or be absorbed by it. Light rays that bounce back are called what?
Reflected
A.) Refracted
B.) radiant
C.) Reflected