Physics- Light, Color, Reflection & Refraction

Most of the electromagnetic spectrum consists of visible light

(T or F)

False

High frequency waves are

high energy waves

The main difference between a radio wave and light wave is its.

Wavelength & Frequency

Compared to ultraviolet waves, the wavelength of infrared waves is

Longer

The sun is an example of a

luminous object

The moon is an example of a

non-luminous object

Compared to its average speed in air, the average speed of a beam of light in glass is.

Less

The speed of light is

300,000 km/s

Light can only partially travel through

translucent objects

The three primary colors in light are

blue, green and red

Magenta light is really a mixture of..

Red and blue light

Different colors of light correspond to different light...

Frequencies

When light passes through an ordinary window pane it's angle of refraction is...

Always less than its angle of incidence

Light travels fastest in?

A vacuum

A beam of light emerges from water into air at an angle. The beam is bent..

Away from the normal

When a light beam emerges from water into air, the average lightspeed...

Increases

Opaque means

no light travels through the object

Reflected means

bounced off of an object

What happens to the speed of light as it enters glass?

The speed of light decreases as it enters through the glass

Does light bend toward or away from the normal as it slows?

When light is slower it bends towards. As it leaves it bends away

refracted means

bends when it passes from one medium to another

Light travels in

straight lines

The lens of an eye focuses images on the

retina

Short sighted people need

concave lenses

Long sighted people need

convex lens

The lens does what to images

Flips them upside down and makes them smaller

White light is made up of

VIBGYOR

Angle of incidence

the angle between the incident ray and the normal

Angle of refraction

the angle between the refracted ray and the normal

red light

refracts the least (lowest frequency)

A green filter on a light will allow

only green light through