Front

What must happen for you to see an object?

Back

Light must be reflected off the object.

Front

What is a lens that is bent inward called?

Back

Concave lens.

Front

What is the speed of electromagnetic waves?

Back

3 x 10^8 m/s.

Front

What do all waves have in common?

Back

They all carry energy.

Front

What happens to blue light when it hits a blue shirt?

Back

The light is reflected.

Front

Define 'light'.

Back

Light is a form of electromagnetic radiation that is visible to the human eye.

Front

What is the difference between a convex and concave lens?

Back

A convex lens bulges outward and converges light rays, while a concave lens curves inward and diverges light rays.

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another.

Front

What is the electromagnetic spectrum?

Back

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

Front

What is the principle of reflection?

Back

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