Topic 3 Lesson 3 Waves and the Electromagnetic Spectrum

Front

What is a wave?

Back

A wave is a disturbance that transfers energy from one place to another without transferring matter.

Front

What is the electromagnetic spectrum?

Back

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

Front

What happens when light hits a transparent material?

Back

Most of the light can go through the transparent material, which is called refraction.

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 absorption in terms of light?

Back

Absorption is when light is taken in by a material and does not pass through or bounce off.

Front

What are X-rays used for?

Back

X-rays are used in medicine to see inside the human body, as they can be absorbed by dense materials like bones.

Front

What is the function of the aperture in a camera?

Back

The aperture controls the amount of light that enters the camera, similar to how the pupil controls light entering the eye.

Front

What does the digital sensor in a camera do?

Back

The digital sensor captures light and converts it into an image, similar to how the retina processes light in the eye.

Front

What is reflection?

Back

Reflection is when light bounces off a surface instead of passing through it.

Front

What is the difference between opaque and transparent materials?

Back

Opaque materials do not allow light to pass through, while transparent materials do.