Electromagnetic Radiation and Light

Front

What is electromagnetic radiation?

Back

Electromagnetic radiation consists of changing electric and magnetic fields.

Front

Do all types of electromagnetic radiation travel at the same speed?

Back

Yes, all types of electromagnetic radiation travel at the speed of light but differ in frequency.

Front

What does the sun emit in terms of electromagnetic radiation?

Back

The sun gives off radiant energy of all frequencies in the electromagnetic spectrum.

Front

How is energy from electromagnetic radiation converted to other forms?

Back

Energy from electromagnetic radiation may be converted to other forms of energy only after it is absorbed by matter.

Front

How are electromagnetic waves arranged on the spectrum?

Back

Electromagnetic waves are arranged on the electromagnetic spectrum according to wavelength and frequency.

Front

What are the types of waves included in the electromagnetic spectrum?

Back

The electromagnetic spectrum includes gamma rays, X-rays, ultraviolet, visible light, infrared, microwaves, and radio waves.

Front

Which waves have the longest wavelength and lowest frequency?

Back

Radio waves have the longest wavelength and lowest frequency.

Front

Which waves have the shortest wavelength and highest frequency?

Back

Gamma rays have the shortest wavelength and highest frequency.

Front

What happens to radiant energy when it strikes an object?

Back

Radiant energy can be reflected, absorbed, or transmitted when it strikes an object.

Front

What occurs when a wave encounters a new material?

Back

The new material may absorb the energy of the wave, reflect the wave, or transmit the wave.