$Refraction$

Refraction

Presentation

•

Physics

•

6th - 8th Grade

•

Medium

•

NGSS

HS-PS4-1, HS-PS4-5, MS-PS4-2

Standards-aligned

Erin Quinn

Used 200+ times

FREE Resource

19 Slides • 7 Questions

Refraction

As a light wave moves from one medium into another, its speed changes

Multiple Choice

As a light wave moves from a faster medium to a slower medium, its speed

does not change

slows down

speeds up

If the wave enters the new medium at an angle, the wave will change direction

Multiple Choice

When a wave enters a new medium AT AN ANGLE the wave

continues in the same direction

changes direction

Multiple Choice

When a light wave enters a new medium straight (at a 90^oangle) the wave

continues in the same direction

changes direction

Refraction

the change in direction of a wave as it changes speed while moving from one medium to another

Multiple Select

Choose all examples of refraction

Poll

Position A is where the fish is actually located. Because of refraction, where does the fish APPEAR to be?

Other examples of refraction

prisms

Diamonds

Rainbow

Refraction and lenses

A lens is a transparent object with at least one curved side that causes light to change direction.

Convex Lens: Light rays that move through a convex lens come together or converge. Convex lenses are also called converging lenses.

Convex lens images

Concave Lens: as light rays move through a concave lens, they spread apart, or diverge. Concave lenses are often called diverging lenses.

Concave lens images

Multiple Choice

The point where light rays converge to a point is called the

middle point

critical point

focal point

Multiple Choice

A __________ lens DOES produce a focal point but a __________ lens DOES NOT.

concave

convex

opaque

translucent

convex

concave

Refraction

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