Seventh Grade Science Set 5

Question Answer
Medium A substance that makes it possible for energy to transfer from one location to another.
Mechanical Wave A type of wave that requires a medium. Examples include water waves and sound waves.
Refraction The bending of light as is passes from one substance to another.
Energy The ability to do work or cause change.
Mass The amount of material a substance or object has. Common measuring units include milligrams, grams and kilograms.
Volume The amount of space taken up by an object or substance. Common measuring units include milliliters, liters and cubic centimeters.
Matter Anything that has mass and takes up space.
Infrared Light A portion of the electromagnetic spectrum that is below or has longer wavelengths than visible red light. Human eyes can’t see it, but it is evident by heat that is given off by objects.
Ultraviolet The portion of the electromagnetic spectrum that is above or has shorter wavelengths than violet light. Human eyes can’t see it, but it causes sunburns.
Visible Light The portion (or colors) of the electromagnetic spectrum that can be seen by the eye.

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