Exploring Light and Vision Concepts

Which of the following is an example of natural light?

• Flashlight

• Sunlight

• Light bulb

• Candle

What is the primary source of natural light on Earth?

• The moon

• The stars

• The sun

• Fire

What is refraction?

• The bending of light as it passes through different materials

• The absorption of light by a surface

• The reflection of light off a surface

• The scattering of light in all directions

Which of the following statements is true about opaque materials?

• They allow all light to pass through

• They allow some light to pass through

• They do not allow any light to pass through

• They reflect all light

Which of the following is true about light?

• It is made up of electrons

• It is made up of photons

• It is made up of protons

• It is made up of neutrons

Which part of the eye helps to focus light onto the retina?

• Iris

• Pupil

• Optic nerve

• Lens

What is the main function of the optic nerve?

• To detect light

• To send visual information to the brain

• To control the amount of light entering the eye

• To focus light onto the retina

What happens to light when it hits a transparent material?

• It is completely blocked

• It passes through clearly

• It is scattered

• It is absorbed

What is the function of the pupil in the eye?

• To detect color

• To focus light

• To control the amount of light entering the eye

• To send signals to the brain

Which part of the eye is responsible for detecting light and sending signals to the brain?

• Iris

• Retina

• Pupil

• Lens