Front

What happens to the energy of an electromagnetic wave when its wavelength is longer?

Back

Energy is lower.

Front

What is the full spectrum of light energy called?

Back

Electromagnetic spectrum.

Front

In astronomy, which color is associated with 'hot'?

Back

Blue.

Front

What is the term for a material that allows light to pass through clearly?

Back

Transparent.

Front

What is the term for a material that does not allow light to pass through?

Back

Opaque.

Front

What is the term for a material that allows some light to pass through but not clearly?

Back

Translucent.

Front

What is the relationship between wavelength and energy in electromagnetic waves?

Back

Longer wavelengths correspond to lower energy.

Front

What type of electromagnetic wave has the shortest wavelength?

Back

Gamma rays.

Front

What type of electromagnetic wave is used in microwave ovens?

Back

Microwaves.

Front

What is the speed of electromagnetic waves in a vacuum?

Back

Approximately 299,792 kilometers per second (or 186,282 miles per second).