OPTIONAL Review for WAVES Test 2 (Updated 12/23))

Front

What is the function of the cornea in the eye?

Back

The cornea is the transparent front part of the eye that covers the iris and pupil. It helps to focus light onto the retina.

Front

Why does notebook paper appear white?

Back

Notebook paper appears white because it reflects all visible light frequencies.

Front

Which type of rays carry the greatest amount of energy?

Back

Gamma rays carry the greatest amount of energy.

Front

What is the iris in the eye?

Back

The iris is the colored part of the eye that controls the size of the pupil and regulates the amount of light entering the eye.

Front

What happens to light when it hits a cloud of dust?

Back

When light hits a cloud of dust, it is scattered by the particles.

Front

What is the role of the retina in the eye?

Back

The retina is the light-sensitive layer at the back of the eye that converts light into electrical signals sent to the brain.

Front

What is the definition of visible light?

Back

Visible light is the portion of the electromagnetic spectrum that can be seen by the human eye, typically ranging from wavelengths of about 400 to 700 nanometers.

Front

What is the difference between reflection and refraction?

Back

Reflection is the bouncing back of light when it hits a surface, while refraction is the bending of light as it passes from one medium to another.

Front

What is the purpose of the lens in the eye?

Back

The lens focuses light onto the retina, allowing us to see clearly at different distances.

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 gamma rays.