Chapter 11 - Light

Because of refraction, the Sun near sunset appears

higher in the sky

If the atmosphere were about 40 times thicker, at noon, the Sun would appear

red-orange

The glare seen from water in a lake is largely

horizontally polarized

A rough surface for infrared waves may be polished for

radio waves

Which has the highest frequency?

blue light

When an ultraviolet light is incident upon glass, most atoms in the glass

resonate

Your friend says that any radio wave travels appreciably faster than any sound wave.

agree unconditionally

Infrared waves are often called heat waves because they

include resonance of molecules in the skin that becomes thermal energy

Most of the waves in the electromagnetic spectrum are

invisible

Ultraviolet light that shines on a pane of transparent glass

transforms to thermal energy

Different colors of light travel at different speeds in a transparent medium. In a vacuum, different colors of light travel at

the same speed

Complementary colors are two colors that

produce white light when combined

Atmospheric refraction makes the daylight hours

longer

Rainbows are not usually seen as complete circles because

the ground is usually in the way

Sometimes on a hot day a distant dry street appears wet, which is due to

refracted sky light

Red sunsets are due to lower frequencies of light that

survive being scattered in the air

The natural frequency of atoms in glass is in the

ultraviolet region of the spectrum

According to the law of reflection, the incident ray, reflected ray, and normal between them

lie in the same plane

Refraction occurs when light passing from one medium to another

changes speed

When you read from a printed page, you're seeing reflected light that is

diffuse