Light Waves Unit (Review)

Front

What is light?

Back

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

Front

What is wavelength?

Back

Wavelength is the distance between two consecutive peaks of a wave, which determines the type of light.

Front

What is a light source?

Back

A light source is an object that emits light, such as the sun, a light bulb, or a candle.

Front

What is ultraviolet light?

Back

Ultraviolet light is a type of light with a wavelength shorter than visible light, which can cause certain materials to change color.

Front

How does light affect color change in materials?

Back

Light can provide energy to materials, causing them to undergo chemical changes that result in a color change.

Front

What is infrared light?

Back

Infrared light is a type of light with a longer wavelength than visible light, often associated with heat.

Front

What is the electromagnetic spectrum?

Back

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

Front

What is the difference between visible light and ultraviolet light?

Back

Visible light is the part of the electromagnetic spectrum that can be seen by the human eye, while ultraviolet light is not visible and has shorter wavelengths.

Front

What happens when light hits a colored object?

Back

When light hits a colored object, certain wavelengths are absorbed while others are reflected, determining the color we see.

Front

What is the role of energy in light interactions?

Back

Energy from light can cause changes in materials, such as heating them up or causing chemical reactions.