10.3

Question 1

Ray model of light

Answer 1

Model representing light as straight lines called rays that show direction in which light travels

Question 2

Transparent

Answer 2

Light transmits through absorb and reflect very little light

Question 3

Translucent

Answer 3

Transmits some light

Question 4

Opaque

Answer 4

Absorb and reflect light do not transmit

Question 5

Umbra

Answer 5

The part of the shadow in which all the light rays from the light source re blocked

Question 6

Penumbra

Answer 6

Partial shadow from a no point light source

Question 7

Regular reflection

Answer 7

The light rays strike a smooth surface and reflect in the same direction parallel. To each other

Question 8

Diffuse reflection

Answer 8

Reflect off a rough or uneven surface do not remain parallel but are scattered in many different directions