Unit 4 Test Practice

Define Atmosphere.

• Envelope of gasses surrounding Earth

• Gases on the surface of the earth

• Gases in space

• Dangerous gases in the Earth's troposphere

What does the Earth’s tilt affect?

• Day and Night

• Seasons

• Weather

• Length of a day/year

What does the Earth’s rotation on its axis affect?

• Temperature

• Weather

• Seasons

• Day and night

Where on the Earth receives the most direct sunlight?

• Equator

• Southern Hemisphere

• Northern Hemisphere

• The poles

How does the sun warm the Earth?

• It doesn't warm the Earth

• It reflects off the ozone layer and heats earth

• The Sun’s ultraviolet rays travel to Earth and provide a source of energy that allows many of the Earth’s processes to happen such as The Water Cycle, uneven heating of the Earth which causes weather, wind, and ocean currents

• UV rays are seen from space and don't go through Earth's atmosphere

What type of “rays” does the Sun send? Define electromagnetic.

• Ultra rays

• VU rays

• UV rays

• Violet rays

What are the layers of the atmosphere in order?

• Troposphere, Exosphere, Mesosphere, Stratosphere, Thermosphere

• Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere

• Mesosphere, Stratosphere, Exosphere, Thermosphere, Troposphere

• Exosphere, Thermosphere, Mesosphere, Troposphere, Stratosphere

Define our ozone layer.

• Absorbs most of the UV radiation from the sun

• Reflects UV rays from the sun

• Lets UV rays from the sun go directly to earth

• Filters UV rays into Earth

How does the ozone layer protect you as a human?

• Organisms would not survive without the ozone layer, the ozone layer reduces the amount of ultraviolet radiation reaching the surface of the Earth and helps to remove electromagnetic radiation that is harmful to living things

• Organisms can survive with the ozone later, we don't need it

• It reflects UV rays so we don't get any on Earth

• It doesn't later ay radiation from the sun through

What would happen if the ozone layer disappeared or no longer existed?

• We would not be able to safely walk outside without protective clothing and eyewear to protect us from harmful ultraviolet radiation

• We'd all melt completely

• It wouldn't effect us at all

• It would become very cold on Earth