Energy Transformations: Vocabulary Worksheet

Define the following:

Nucleus

Energy

Radioactive Decay

Condensation

Half-Life

Match the term on the left with its definition on the right.

__	Phase of Matter	A.	This is a measure of mass per unit volume.
__	Density	B.	This is a temperature where the vapor pressure of a liquid equals the atmospheric pressure.
__	Mechanical Energy	C.	This is what occurs when matter transitions between solid, liquid and gas.
__	Phase Change	D.	The energy transferred by a force to a moving object.
__	Boiling Point	E.	This is the phase of matter with fixed shape and volume.
__	Gas	F.	This is the phase of matter with no fixed shape or volume.
__	Electrical Energy	G.	Energy created by the flow of electrons through a conductor.
__	Solid	H.	The spontaneous emission of energy and/or matter from the nucleus of an unstable atom. As a result of this emission, the atom may be converted into an atom of a different element.
__	Kinetic Energy	I.	This is energy of motion.
__	Radioactivity	J.	Composition of matter which depends on temperature.

Energy Transformations: Vocabulary Worksheet -Answer Key

Worksheet Generated On: 02-03-2009

Term Definitions

Nucleus: This is a group of protons and neutrons in the center of all atoms.

Energy: The capacity for doing work. It may be transformed from one form to another.

Radioactive Decay: Spontaneous disintegration of a radionuclide accompanied by the emission of alpha or beta particles or gamma rays.

Condensation: This is the process of matter changing from a gaseous state to a liquid state.

Half-Life: This is the period of time it takes for a radioactive sample to decay to half of its original amount.

Matching Answers

J	Phase of Matter	A.	This is a measure of mass per unit volume.
A	Density	B.	This is a temperature where the vapor pressure of a liquid equals the atmospheric pressure.
D	Mechanical Energy	C.	This is what occurs when matter transitions between solid, liquid and gas.
C	Phase Change	D.	The energy transferred by a force to a moving object.
B	Boiling Point	E.	This is the phase of matter with fixed shape and volume.
F	Gas	F.	This is the phase of matter with no fixed shape or volume.
G	Electrical Energy	G.	Energy created by the flow of electrons through a conductor.
E	Solid	H.	The spontaneous emission of energy and/or matter from the nucleus of an unstable atom. As a result of this emission, the atom may be converted into an atom of a different element.
I	Kinetic Energy	I.	This is energy of motion.
H	Radioactivity	J.	Composition of matter which depends on temperature.