Chapter 3

Question Answer
A wave that consists of electric and magnetic fields that vibrate at right angles to each other Electromagnetic Wave
The transfer of energy as electromagnetic waves Radiation
All of the frequences or wavelengths of electromagnetic radiation Electromagnetic Spectrum
The bouncing back of a ray of light, sound, or heat when the ray hits a surface that it does not go through Reflection
In optics, the transfer of light energy to particles of matter absorption
an interaction of light with matter that causes light to change its energy, direction of motion, or both scattering
The bending of a wave as the wave passes between two substances in which the speed of the wave differs Refraction
A change in the direction of a wave when the wave finds an obstacle or an edge, such as an opening diffraction
The combination of two or more waves that results in a single wave Interference
The passing of light or other form of energy through matter Transmission
Describes matter that allows light to pass through with little interference Transparent
Describes matter that transmits light but that does not transmit an image Translucent
Describes an object that is not transparent or translucent Opaque
A substance that gives another substance or a mixture its color Pigment
Radio and television stations are broadcast with these waves Radio waves
Some forms of cancer are treated with this type of wave. Gamma waves
These waves are used by cellular phones. Microwaves
These waves are used to see inside containers without opening them. X-rays
You need to wear sunscreen because of these waves Ultra-Violet light
These waves can be seen as white light Visible light
These waves make things feel warm. Infrared waves
The sun is a ____________________ object. luminous
The moon is a _____________________ object. non-luminous
The major source of energy on earth originates from the _____________________. sun

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