9.Energy stored in the bonds between atoms is called
10.Waves not only move up and down, but also move
11.An object will move if the forces acting on it are .
12.An astronaut drops a hammer and an egg while standing on the surface of the Moon. Which one will hit the surface first?
13.Newton's First Law is also known as.
14.A sound wave is an example of a
15.If an atom has a mass number of 14 and an atomic number of 9, then how many neutrons does the atom have in its nucleus?
16.A _______ has a definite size, but not a definite shape.
17.The total amount of kinetic and potential energy in a system is called
18.The total amount of energy delivered every second to a resistor is a measure of
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