RMS - Introduction to Light

Front

What is light absorption?

Back

Light absorption is the process by which light is taken in by a material, converting the light energy into other forms of energy, such as heat.

Front

What happens to light when it is reflected?

Back

When light is reflected, it bounces off a surface instead of being absorbed or transmitted. The angle of incidence equals the angle of reflection.

Front

What is the primary source of light for all living things on Earth?

Back

The primary source of light for all living things on Earth is the sun.

Front

What is the difference between absorption and reflection of light?

Back

Absorption occurs when light is taken in by a material, while reflection occurs when light bounces off a surface.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second (or about 186,282 miles per second).

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, including visible light, infrared, ultraviolet, X-rays, and radio waves.

Front

What is the role of light in photosynthesis?

Back

Light provides the energy needed for photosynthesis, allowing plants to convert carbon dioxide and water into glucose and oxygen.

Front

What is refraction of light?

Back

Refraction is the bending of light as it passes from one medium to another, caused by a change in its speed.

Front

What is the law of reflection?

Back

The law of reflection states that the angle of incidence is equal to the angle of reflection.

Front

What is a light source?

Back

A light source is any object that emits light, such as the sun, a light bulb, or a fire.