Electromagnetic Spectrum Flashcard

Front

What is the only section of the electromagnetic spectrum that we can see?

Back

Visible Light

Front

Which type of electromagnetic wave has the longest wavelength and lowest frequency, commonly used in cell phones and televisions?

Back

Radio Wave

Front

What is the range of the visible light spectrum?

Back

Between infrared rays and ultraviolet rays.

Front

Which type of electromagnetic wave has the shortest wavelength and highest frequency, and is extremely harmful?

Back

Gamma Ray

Front

Which of the following does NOT belong in the electromagnetic spectrum: X-ray, sound wave, ultraviolet rays, microwaves?

Back

Sound wave.

Front

What are electromagnetic waves?

Back

Waves that can travel through the vacuum of space and consist of oscillating electric and magnetic fields.

Front

What is the speed of electromagnetic waves in a vacuum?

Back

Approximately 299,792 kilometers per second (or about 300,000 kilometers per second).

Front

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

Back

They are inversely related; as wavelength increases, frequency decreases.

Front

What type of electromagnetic wave is used in remote controls?

Back

Infrared waves.

Front

What is the main source of ultraviolet rays?

Back

The Sun.