8 green

The ray of light that strikes a reflecting surface is called ________.

• incident ray

• reflected ray

• normal ray

• none of the above

. 

straight lines that represent light waves 

• Rays

• image

• visible light

• lines

 

Why are we able to see? What is sight dependent on? What happens?

• Light rays leave our eyes and then bounce off objects back to our eyes.

• Light rays from luminous objects bounce off objects and then enter our eyeballs (then our brain takes over interpreting the data).

• We just have to open our eyes: we can see in any setting, as long as we give our eyes long enough to become adjusted to the light levels.

What “color” do we sense when there is no light in a room?

• Black

• White

• Rainbow

• Gray

What are illuminated objects?

• objects are objects that generate their own light

• objects that are capable of reflecting light (but don't generate it)

• objects that do not reflect any light

• objects that let light pass through them

. 

What letter represents the normal line?

• A

• D

• C

• B

According to the Law of reflection, a light ray striking a mirror

• continues moving through the mirror in the same direction

• moves into the mirror at a slightly different angle

• bounces off the mirror at the same angle it hits.

• bounces off the mirror toward the direction it came from

The fact the two angles are the same is an example of....

• Refraction

• Angle of Incidence

• Law of reflection

• Magnification

What is the value of the unknown angle (theta) in the following diagram?

• A. 30 degrees

• C. 90 degrees

• B. 45 degrees

• D. 60 degrees

Angles are always measured from the:

• Boundary

• Normal

• Incident Ray

• Reflected Ray