Light Waves

Front

What is gamma radiation?

Back

Gamma radiation is a powerful form of energy produced in nuclear explosions and by stars. It has the highest energy and shortest wavelength in the electromagnetic spectrum.

Front

What type of wave can travel through matter but not through space?

Back

Sound waves can travel through matter (gas, liquid, solid) but cannot travel through the vacuum of space.

Front

What is visible light?

Back

Visible light is the portion of the electromagnetic spectrum that can be seen by the human eye. It includes all the colors that we can perceive.

Front

What type of radiation causes sunburn?

Back

Ultraviolet (UV) radiation is responsible for causing sunburn. It has a shorter wavelength than visible light.

Front

What is light?

Back

Light is a form of energy that travels in waves and can be perceived by the human eye.

Front

What is the electromagnetic spectrum?

Back

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

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 (or about 186,282 miles per second).

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another, caused by a change in its speed.

Front

What is reflection?

Back

Reflection is the bouncing back of light when it hits a surface. It allows us to see objects.

Front

What is the difference between ultraviolet and visible light?

Back

Ultraviolet light has a shorter wavelength than visible light and is not visible to the human eye, while visible light can be seen.