Amplify Light Waves Chapter 2

Front

What can cause light from different sources to have different effects on materials?

Back

Sources can emit different types of light.

Front

What is the trough in a wave?

Back

The bottom of a wave.

Front

In order for light to change an object, what must that object do with the light?

Back

The object must absorb the light and its energy.

Front

What type of wave can travel through matter (gas, liquid, solid) and empty space?

Back

Light.

Front

Can objects absorb some types of light but not others?

Back

True.

Front

What is the definition of light?

Back

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

Front

What is the amplitude of a wave?

Back

The amplitude is the height of the wave from its rest position to its crest or trough.

Front

What happens when light is absorbed by an object?

Back

The energy from the light is taken in by the object, which can cause changes in temperature or state.

Front

What is reflection in terms of light waves?

Back

Reflection is when light bounces off a surface instead of being absorbed.

Front

What is the wavelength of light?

Back

Wavelength is the distance between two consecutive crests or troughs in a wave.