Review for 8th Science FCAT (Light and Waves)

Front

What are gamma rays used for?

Back

Gamma rays are used to diagnose and treat cancer.

Front

Which wave has a greater frequency, A or B?

Back

Wave A has a greater frequency.

Front

What type of electromagnetic waves are used in ovens and cell phone communications?

Back

Microwaves are used in ovens and cell phone communications.

Front

What is the relationship between wavelength and frequency?

Back

As the wavelength becomes longer, frequency becomes lower.

Front

What type of waves do cell phones use?

Back

Cell phones use microwaves.

Front

Define wavelength.

Back

Wavelength is the distance between successive crests of a wave.

Front

Define frequency.

Back

Frequency is the number of waves that pass a point in one second.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second.

Front

What are infrared rays used for?

Back

Infrared rays are used in remote controls and thermal imaging.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation.