Unit 5 Video 1 Review

What gases are found in salt water?

• Oxygen and Carbon Dioxide

• Carbon dioxide and methane

• Helium and argon

• Hydrogen and neon

Where does oxygen get into the oceans?

• Volcanic eruptions

• Photosynthesis and atmospheric exchange

• Deep-sea vents

• Ocean floor sediments

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What is the oxygen minimum zone? Explain why it occurs?

• A region with high oxygen due to photosynthesis

• A region with low oxygen due to lack of sunlight (no photosynthesis)

• A region with no oxygen due to volcanic activity

• A region with fluctuating oxygen due to tides

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What is responsible for warming Earth’s surface?

• The greenhouse effect

• Ocean currents

• Volcanic eruptions

• Solar flares

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What causes the amount of radiant energy to change as latitude increases north and south (move away from the equator)?

• Earth's rotation

• The tilt of Earth's axis

• Ocean currents

• Atmospheric pressure

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What part of the earth receives the most radiant energy? Why?

• The poles, due to reflection

• The equator, due to direct sunlight

• The mid-latitudes, due to wind patterns

• The deserts, due to low humidity

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Explain Earth’s “energy budget”.

• The balance between incoming and outgoing energy

• The amount of energy stored in fossil fuels

• The energy used by human activities

• The energy produced by the sun

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Describe the greenhouse effect. What are 2 greenhouse gases?

• A natural process involving carbon dioxide and methane

• A man-made process involving oxygen and nitrogen

• A natural process involving helium and neon

• A man-made process involving hydrogen and argon

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NGSS.MS-ESS3-5

Is the greenhouse effect good or bad? Explain.

• Good, because it supports life

• Bad, because it causes pollution

• Good, because it reduces sunlight

• Bad, because it increases oxygen

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How have humans altered the greenhouse effect?

• By increasing greenhouse gas emissions

• By decreasing solar radiation

• By increasing ocean currents

• By decreasing volcanic activity

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