7.9c

In addition to its proximity to the Sun, which of the following Earth characteristics is most responsible for regulating the planet's surface temperature and enabling life to thrive?

• Earth’s magnetic field protects the planet from solar radiation.

• Earth’s atmosphere contains a balanced mix of gases, including oxygen and carbon dioxide, that trap heat through the greenhouse effect.

• Earth’s surface is covered almost entirely by oceans, which reflect sunlight and keep the planet cool.

• Earth’s moon causes tides that help regulate temperature variations.

Analyze three characteristics of Earth that allow life to exist. How would a change in each of these three affect the planet’s allowance for life?

• Proximity of the sun

• Presence of water

• Composition of the atmosphere

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NGSS.MS-ESS2-4

NGSS.MS-LS1-5

NGSS.MS-LS2-3

How does the presence of carbon dioxide in Earth's atmosphere support life?

• It is used by plants to produce oxygen through photosynthesis.

• It is the main gas animals use for respiration.

• It blocks harmful ultraviolet radiation from the Sun.

• It is the primary source of nitrogen for plants.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

How does Earth's position relative to the Sun, along with its atmosphere, support the existence of liquid water?

• Earth's distance from the Sun allows for a stable climate where liquid water can exist, and the atmosphere traps heat to prevent the water from freezing.

• Earth is located close enough to the Sun to ensure that water remains in liquid form, while its atmosphere blocks most heat, causing the water to evaporate.

• Earth's proximity to the Sun causes temperatures to be too high for liquid water to exist, but the atmosphere keeps it in a gaseous state.

• Earth's orbit around the Sun causes dramatic shifts in temperature, which helps maintain the water cycle and supports life by regulating water availability.

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NGSS.MS-ESS2-4

NGSS.MS-ESS2-6

Which letter represents amplitude? (a)  

• A

• B

• C

• D

• E

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NGSS.MS-PS4-1

Choose some requirements necessary for Earth to allow life to exist. Select three answers.

• Size of the planet

• Composition of the atmosphere

• Proximity to the sun

• Presence of water

• Percentage of landmass

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NGSS.MS-ESS2-4

Which planets are on the side of the habitable zone where it is too warm for water to exist as a liquid? Select all that apply.

• Mercury

• Venus

• Earth

• Mars

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NGSS.MS-ESS2-4

Which habitat is known for allowing high biodiversity and lush plant growth?

• Desert

• Rainforest

• Ocean

• Tundra

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NGSS.MS-LS1-6

NGSS.MS-LS2-4

In which habitat does infrequent rain support specially adapted organisms?

• Desert

• Rainforest

• Ocean

• Tundra

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Fill in the blank: Oceans hold the largest percentage of Earth's water, which is ____.

• 97.20%

• 2.15%

• 0.61%

• 0.01%

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NGSS.MS-ESS2-4