Exploring Light: Reflection and Refraction

What is the speed of light in a vacuum?

• 300,000 km/s

• 150,000 km/s

• 100,000 km/s

• 50,000 km/s

What is the law of reflection?

• The angle of incidence is equal to the angle of refraction.

• The angle of incidence is equal to the angle of reflection.

• The angle of reflection is always 90 degrees.

• The angle of incidence is always 45 degrees.

Which of the following materials would cause light to refract the most?

• Air

• Water

• Glass

• Diamond

What happens to light when it passes from air into water?

• It speeds up.

• It slows down.

• It continues at the same speed.

• It stops.

What is the term for the bending of light as it passes from one medium to another?

• Reflection

• Refraction

• Diffraction

• Dispersion

Which of the following is an example of reflection?

• A rainbow

• A mirror image

• A straw appearing bent in a glass of water

• Light passing through a prism

What is the difference between regular and diffuse reflection?

• Regular reflection occurs on rough surfaces, while diffuse reflection occurs on smooth surfaces.

• Regular reflection occurs on smooth surfaces, while diffuse reflection occurs on rough surfaces.

• Both occur on smooth surfaces.

• Both occur on rough surfaces.

Which of the following best explains why a pencil appears bent when placed in a glass of water?

• Reflection of light

• Refraction of light

• Diffraction of light

• Absorption of light

If the angle of incidence is 30 degrees, what is the angle of reflection?

• 15 degrees

• 30 degrees

• 45 degrees

• 60 degrees

Which type of reflection is responsible for the clear image seen in a mirror?

• Diffuse reflection

• Regular reflection

• Scattered reflection

• Absorbed reflection