LIght technology

Uses of Light

​

Refraction vs. Reflection

Refraction​

• Bending of light

• Happens when you change Medium

• Lens

• Rainbows​

Reflection

• Bouncing back of light

• Mirrors​

Multiple Choice

_____ bends light

• Refraction

• Reflection

Multiple Choice

_____ is when light bounces back.

• Refraction

• Reflection

Fiber Optics

• Use Total Internal Reflection

• Small glass strand for light to travel

• Used by internet & doctors to perform surgeries​

LASERS

• ONE color or wavelength of light

• Used to....

  • Cut metal

  • Surgery (ex. Lasic eye surgery)

  • Bar code Scanner

  • DVD player

  • Laser printers

Multiple Choice

This is an example of ____

• Fiber optics

• Mirror

• Laser

• Lens

Multiple Choice

This is an example of ____

• Fiber optics

• Mirror

• Laser

• Lens

Multiple Choice

Internet cables use light in the form of _____

• Fiber optics

• Mirror

• Laser

• Lens

Multiple Choice

Bar code scanners use light in the form of ____

• Fiber optics

• Mirror

• Laser

• Lens

Multiple Choice

_____ work by total internal reflection of light

• Lasers

• Fiber optics

• Mirrors

• Lens

Multiple Select

Which of the following are uses of LASERS? (Choose ALL that apply)

• Internet

• Eye surgery

• Bar code scanners

• DVD players

• Cut metal

Mirrors

• REFLECT light

• Light bounces off at the same angle it enters

Multiple Choice

Mirrors____ light.

• Refract

• Reflect

• Absorb

• Diffract

Multiple Choice

If light strikes a plane mirror at a 45^o angle, what angle will it reflect?

• 145^o

• 90^o

• 45^o

• 180^o

Types of Mirrors

• Concave

• Convex

• Plane

Concave Mirror

• Curves INWARD

• Images are upside down

• Used in...Makeup mirrors, dental equipment, car headlights

Convex Mirror

• Curves OUTWARD

• Images are smaller than actual size

• Used in...passenger car mirror, stores (for security)

Plane Mirror

• FLAT

• Images are opposite

Multiple Choice

Which type of mirror is curved outward?

• Concave

• Convex

• Plane

Multiple Choice

Which type of mirror is curved inward?

• Concave

• Convex

• Plane

Multiple Choice

Which type of mirror is flat?

• Concave

• Convex

• Plane

Multiple Choice

Which type of mirror is this?

• Concave

• Convex

• Plane

Multiple Choice

Which type of mirror is this?

• Concave

• Convex

• Plane

Multiple Choice

Which type of mirror is this?

• Concave

• Convex

• Plane

Lenses

• REFRACT light

• Light bends as it passes through a different medium

Multiple Choice

Lenses____ light.

• Refract

• Reflect

• Absorb

• Diffract

Multiple Choice

As the light passes through this prism it is refracted. This means---

• It bounces back to make colors

• It is absorbed into the air

• It bends based on the color's wavelength

Types of Lenses

• Concave

• Convex

Concave lenses

• Curve INWARD

• Spreads out light

• Used in....binoculars, spy hole in doors, flashlights, and glasses

Convex lenses

• Curves OUTWARD

• Focuses light together

• Used in....YOUR EYE, magnifying glasses, telescopes, Microscopes, glasses

Multiple Choice

Which type of lens is curved outward?

• Concave

• Convex

Multiple Choice

Which type of lens is curved inward?

• Concave

• Convex

Multiple Choice

Which type of lens is this?

• Concave

• Convex

Multiple Choice

Which type of lens is this?

• Concave

• Convex

Multiple Choice

Which type of lens is this?

• Concave

• Convex

Multiple Choice

Which type of lens is this? (Curved outward)

• Concave

• Convex

Multiple Choice

Which type of lens is this? (Curved inward)

• Concave

• Convex