EM SPECTRUM

Front

What are electromagnetic waves?

Back

Electromagnetic waves are waves of energy that travel through space at the speed of light. They include a range of waves such as radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays.

Front

Which electromagnetic waves have the highest frequencies and the shortest wavelengths?

Back

Gamma rays.

Front

Which electromagnetic waves help doctors detect broken bones inside your body?

Back

X-rays.

Front

What is the name given to the lowest point of a wave?

Back

Trough.

Front

What is the term for the number of waves that pass a point in one second?

Back

Frequency.

Front

Which wavelength gives you sunburn?

Back

Ultraviolet.

Front

What is the highest point of a wave called?

Back

Crest.

Front

What is wavelength?

Back

Wavelength is the distance between two consecutive crests or troughs in a wave.

Front

What is amplitude in a wave?

Back

Amplitude is the maximum distance that the points of a wave's medium move from their rest position.

Front

What is the speed of electromagnetic waves in a vacuum?

Back

The speed of electromagnetic waves in a vacuum is approximately 299,792 kilometers per second (or about 300,000 kilometers per second).