Optics and Vision Unit 2 Page 1 Study Notes Science

How does light travel?

• In a circle

• In a straight line

• In a square

• Like an oval

Illuminance ___________ with distance.

• increases

• stays the same

• decreases

• improves

Light cannot _______________ around objects.

• swim

• float

• bend

• run

___________________ materials such as books, people reflect or absorb all the light that reaches them

• transparent

• luminous

• non-luminous

• opaque

A _____________ is created whenever light hits an opaque material.

• ultraviolet light

• Light beam

• shadow

• bright light

A shadow is composed of ___________ regions.

• Five

• Six

• Three

• Two

The shaded region of a shadow is called the

• Opaque

• conundra

• umbra

• penumbra

The fully shaded region of a shadow is called the

• shadow

• penumbra

• umbra

• umbrella

Objects that produce light are called

• transparent

• opaque

• luminous

• non-luminous

Objects that do not produce light bu may reflect are called

• luminous

• transparent

• non-luminous

• opaque