7.9C

How does Earth's ability to support life compare to that of other planets in the Solar System, based on its distance from the Sun and the properties of its atmosphere?

• Earth is the only planet in the Solar System capable of supporting life due to its perfect distance from the Sun and the composition of its atmosphere.

• Earth supports life because it has an atmosphere that is predominantly composed of oxygen, which is not found on other planets.

• Earth's distance from the Sun and its atmosphere are similar to Venus and Mars, which also support life in some forms.

• Earth's ability to support life is unrelated to its atmosphere or distance from the Sun, but instead is due to its surface composition.

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NGSS.MS-LS2-3

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 planet is nicknamed Earth's twin planet?

• Mercury

• Venus

• Earth

• Mars

Venus is nicknamed Earth’s twin planet. Why can life not exist on Venus?

• Venus orbits the sun at a closer distance than Earth does, affecting the atmosphere and presence of water.

• Venus orbits the sun at a greater distance than Earth does, affecting the atmosphere and presence of water.

• Venus has not yet been explored, so we are not sure whether or not life can exist on the planet.

• Venus orbits the sun at a closer distance than Earth does, affecting its size and structure.

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?

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

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

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

• D. 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

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

• Desert

• Rainforest

• Ocean

• Tundra

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NGSS.MS-LS2-4

NGSS.MS-LS2-5

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

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