Light and Reflection

Explain when you can see a reflection.

• When light hits a rough surface, it bounces off in random directions, creating a reflection.

• When light hits a smooth surface, it bounces off at the same angle it hit the surface, creating a reflection.

• Reflection of light occurs only in the presence of water.

• Reflection of light is caused by the absorption of light by the surface.

What are the laws of reflection?

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

• The incident ray and the reflected ray do not lie in the same plane

• The laws of reflection only apply to transparent surfaces

• The incident ray, the reflected ray, and the normal to the surface at the point of incidence all lie in the same plane.

What are the primary colors of light?

• Red, green, and blue.

• Black, white, gray

• Red, yellow, and blue

• Yellow, cyan, magenta

Which image of the triangle will be closest to the triangle?

• The reflection in A

• The reflection in B

• The reflection in A and B

What is the correct speed of light in a vacuum?

• 3,000,000 meters per second

• 299,000 meters per second

• 500,000 meters per second

• 299,792,458 meters per second

Name the type of reflection shown here.

What happens when the two colors of light—red and green are mixed together?

• you get cyan

• you get magenta

• you get yellow

• you get brown

What colours should you mix to get cyan?

• red

• yellow

• green

• blue

Which of the following is right?

• W - G = C

• W - B = Y

• W - R = Y

• W - C = M

Assume you subtract green light from magenta. What happens?