Amplify Light Waves Critical Juncture 3.4

Front

What is light energy?

Back

Light energy is a form of energy that travels in waves and can be absorbed by materials, causing changes in their properties.

Front

How can light from the sun damage a car's paint?

Back

Light from the sun can be absorbed by the paint, causing it to take in energy and become damaged over time.

Front

What is infrared light?

Back

Infrared light is a type of light that is not visible to the human eye but can be felt as heat and can transfer energy to objects.

Front

Why does infrared light warm a mirror while visible light does not?

Back

The mirror can absorb energy from infrared light, which causes it to warm up, while it does not absorb energy from visible light.

Front

What happens to special color-changing paper when exposed to sunlight?

Back

The paper absorbs energy from the sunlight, which causes it to change color.

Front

Why does a red toy stay red under a desk lamp but turn blue under an infrared lamp?

Back

The paint on the toy can absorb energy from infrared light, causing a color change, while it does not absorb energy from the desk lamp's light.

Front

What is the role of energy in changing the properties of materials?

Back

Energy can cause materials to change their physical properties, such as color or state, by being absorbed or transferred.

Front

What type of laser can cut a hole in silicone?

Back

The carbon dioxide laser can cut a hole in silicone because it provides enough energy to change the material.

Front

What is the difference between visible light and infrared light?

Back

Visible light can be seen by the human eye, while infrared light cannot be seen but can be felt as heat.

Front

How does energy transfer occur with light?

Back

Energy transfer occurs when light is absorbed by an object, causing changes in the object's properties.