Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, which includes radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays.

Front

What is unique about the line spectra of elements?

Back

Each element has a unique line spectrum, which allows astronomers to identify the composition of distant stars and planets by analyzing the light they emit.

Front

Which type of electromagnetic wave has the longest wavelength?

Back

Radio waves have the longest wavelength and the lowest frequency/energy in the electromagnetic spectrum.

Front

What is wavelength?

Back

Wavelength is the distance from the peak of one wave to the peak of the next wave.

Front

What type of waves are used in microwave ovens?

Back

Microwaves are the type of electromagnetic waves that make water molecules vibrate and are used to cook food.

Front

What are ultraviolet rays?

Back

Ultraviolet rays are a type of electromagnetic radiation that helps the body produce vitamin D.

Front

What is frequency?

Back

Frequency is the number of waves that pass a given point in one second, measured in hertz (Hz).

Front

What is amplitude?

Back

Amplitude is the height of a wave from its rest position to its peak, indicating the energy of the wave.

Front

What is the relationship between wavelength and frequency?

Back

Wavelength and frequency are inversely related; as the wavelength increases, the frequency decreases, and vice versa.

Front

What are gamma rays?

Back

Gamma rays are high-energy electromagnetic waves with the shortest wavelength and highest frequency, often produced by radioactive materials.