Unit 07: Light Practice

Front

What is the visible spectrum?

Back

The visible spectrum is the range of light wavelengths that can be seen by the human eye, typically from about 380 nm (violet) to 750 nm (red).

Front

What is infrared light?

Back

Infrared light is a type of electromagnetic radiation with wavelengths longer than visible light, which is not visible to the human eye.

Front

What happens to light when it passes through water?

Back

Light bends (refracts) when it passes from air into water due to a change in speed.

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another, changing its speed.

Front

What is reflection?

Back

Reflection is the bouncing back of light when it hits a surface.

Front

What are transverse waves?

Back

Transverse waves are waves in which the motion of the medium is perpendicular to the direction of the wave.

Front

What type of energy do solar panels convert sunlight into?

Back

Solar panels convert radiant energy from the sun into electrical energy.

Front

What is radiant energy?

Back

Radiant energy is energy that travels by waves or particles, particularly electromagnetic radiation such as light.

Front

What is the speed of light?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second (km/s).

Front

What is absorption of light?

Back

Absorption of light occurs when light is taken in by a material, converting it into other forms of energy, such as heat.