Science - 5.6 Light

[5.6] What is visible light?

A form of radiant energy that can be seen by the human eye.

[5.6] What is radiant energy?

Energy that can travel in waves, including visible light.

[5.6] What is a major source of radiant energy for Earth?

The Sun.

[5.6] Does light need a medium to travel?

No.

[5.6] What type of waves does light travel in?

Transverse waves.

[5.6] What is a wavelength?

The distance between matching points on two waves, such as crest

[5.6] What is frequency?

The number of waves passing a given point in a certain amount of time.

[5.6] What happens to energy as frequency increases?

The amount of energy increases.

[5.6] What determines the color of visible light?

Wavelength.

[5.6] What are the colors of the visible spectrum in order from longest to shortest wavelength?

Red, orange, yellow, green, blue, and violet.

[5.6] What mnemonic can help remember the visible spectrum?

ROYGBV.

[5.6] What is white light?

Light made up of the colors of the visible spectrum.

[5.6] What can happen when light hits an object?

It can be reflected, refracted, transmitted, and/or absorbed.

[5.6] What is reflection?

When light bounces off an object.

[5.6] What is refraction?

The bending of light as it passes from one material into another.

[5.6] What is an example of refraction?

A spoon appearing to bend when it is placed in a cup of water.

[5.6] What happens when white light passes through a prism?

The light refracts and separates into its individual visible colors.

[5.6] What is a transparent material?

A material that allows light to pass through easily.

[5.6] What are examples of transparent materials?

Clear glass, clear plastic wrap, and water.

[5.6] What is a translucent material?

A material that allows some light to pass through.

[5.6] What are examples of translucent materials?

Wax paper, frosted glass, thin fabrics, and thin paper.

[5.6] What is an opaque material?

A material that does not allow light to pass through.

[5.6] What are examples of opaque materials?

Metal, wood, and bricks.

[5.6] How can light energy be transformed into electrical energy?

Solar panels can convert light energy into electrical energy.