Light Waves End-of-Unit Assessment

Front

What is a wavelength?

Back

The distance between two consecutive peaks or troughs in a wave. It determines the color of light.

Front

What is amplitude in the context of light waves?

Back

The height of the wave, which relates to the brightness of the light.

Front

What type of light do lasers emit?

Back

Lasers emit coherent light, which means the light waves are in phase and have a specific wavelength.

Front

How can light affect materials?

Back

Light can cause materials to absorb energy, which may lead to changes such as warming or color change.

Front

What is ultraviolet (UV) light?

Back

A type of light that is not visible to the human eye but can cause chemical reactions, such as fading paint.

Front

Why do some materials change color when exposed to light?

Back

Certain materials absorb specific wavelengths of light, which can cause a change in their appearance.

Front

What is the difference between sunlight and light from a desk lamp?

Back

Sunlight contains a broader spectrum of light, including UV light, which can carry more energy than typical desk lamp light.

Front

Can light change the temperature of an object?

Back

Yes, light can transfer energy to an object, increasing its temperature.

Front

What happens to paint when exposed to UV light?

Back

UV light can break down the chemical bonds in paint, causing it to fade over time.

Front

What is energy absorption in materials?

Back

When materials absorb light energy, it can lead to physical changes, such as heating or chemical reactions.