6.P.3.2 and 6.P.1.2 Review

Multiple Choice

How is energy transferred from the Sun to the Earth?

• As air currents

• As sound waves

• As water currents

• As electromagnetic waves

LIGHT travels in TRANSVERSE WAVES

Light is a form of energy
emitted by the sun as well as
light-producing objects on
earth.

LIGHT BEHAVIOR

LIGHT BEHAVIOR

LIGHT can be ABSORBED

Absorbed – light energy hitting the
surface is converted to heat energy

a.

Dark or black objects absorb
more light and feel hotter than
lighter or white objects

b.

Objects that do not transmit or
reflect much visible light, absorb
it, so the object appears opaque
(you can't see through it)

Multiple Choice

The diagram shows the relationship between the earth and the sun.

Which statement best describes the impact of the sun's radiation on Earth?

• It causes the Earth to rotate

• It causes the Earth to rotate on its axis

• Earth deflects heat from the sun.

• Earth absorbs heat from the sun

Multiple Choice

Which process most likely causes black plastic to feel hot after being exposed to the sun?

• absorption

• dilation

• reflection

• scattering

Multiple Choice

What result will immediately occur when electromagnetic waves are absorbed by a puddle of water?

• The puddle of water will dissapear

• The puddle of watter will get larger

• The puddle of water will get colder

• The puddle of water will get warmer

LIGHT can be REFLECTED
Reflected - light that bounces off a
surface

a. All objects reflect some light

to be visible

b. Highly polished surfaces

such as mirrors are opaque
because most of the visible light is
reflected, none is transmitted and
very little is absorbed

c. When light reflects off a

surface, the angle of incidence
(incoming light) is equal to the
angle of reflection (outgoing light)
– called “Law of Reflection”

Multiple Choice

Why should snow skiers wear dark sunglasses while skiing?

• Sunlight is reflected by the snow

• Sunlight is absorbed by the snow

• Sunlight is scattered by the snow

• Sunlight is transmitted by the snow

Multiple Choice

Which type of material reflects the most radiant energy?

• dark

• dull

• shiny

• woven

Multiple Choice

A student notices that the sunlight striking the ocean appears brighter as compared to the sunlight striking the sand. What process is most likely ocurring to cause this effect?

• The sunlight is being reflected

• The sunlight is being scattered

• The sunlight is being absorbed

• The sunlight is being transmitted

LIGHT can be TRANSMITTED

Transmitted – light that passes through a substance

a.Transparent – visible light is transmitted easily and

objects are seen clearly

b.Translucent – some visible light is transmitted, but

some is scattered (or diffused) so that objects are not
clearly seen

LIGHT can be transmitted and REFRACTED

The electromagnetic waves
when change from a medium
(gas) to another medium
(liquid) their speed decreases
and caused them to slow down
changing the direction of the
wave.

Multiple Choice

Why can students see sunlight shining through a classroom window?

• because the light is absorbed through the glass

• because the light is reflected through the glass

• because light is transmitted through the glass

• because the light is scattered through the glass

Multiple Choice

Which example best describes light transmission?

• light unable to reach an area

• light bouncing off a car mirror

• light warming a black bicycle seat

• light shining through a glass window

Multiple Choice

Why does snow melt faster in a black parking lot than in a light gray sidewalk?

• The parking lot absorbs the cold better.

• The sidewalk radiates a greater amount of heat

• The parking lot absorbs more light and converts it to heat

• The parking lot is a better insulator and converts it to heat

LIGHT can be transmitted and SCATTERED

Multiple Choice

What must occur for electromagnetic waves to scatter?

• They must be cooled

• They must be heated

• They must travel through and interact with matter

• They must be lost

Multiple Choice

Which happens to light when it hits a rough surface?

• Absorption

• Expansion

• Refraction

• Scattering

Multiple Choice

What most often occurs when sun's rays pass through clouds?

• The electromagnetic waves are absorbed.

• The electromagnetic waves are scattered.

• The electromagnetic waves disappear.

• The electromagnetic waves heat up.

Differences of wavelengths = Different colors

-Human eyes respond to only a narrow range of wavelengths of
electromagnetic waves-visible light.

-Differences of wavelengths within that range are perceived as
different colors.

Multiple Choice

Which statement best explains how the color of an object affects the amount of energy it receives from sunlight?

• Dark-colored objects absorb more light and become warmer

• Dark-colored objects reflect more light and become warmer

• Dark-colored objects reflect more light and become warmer

• Light-colored objects absorb more light and become warmer

Multiple Choice

Which best describes a characteristic of Ultraviolet light?

• invisible

• harmless

• cannot be measured

• wavelengths longer than visible light

Multiple Choice

How will an object be affected by infrared light rays?

• Its freezing point will change

• Its boiling point will change

• Its temperature will change

• Its mass would change