The characteristics of Earth

What is the primary gas that makes up Earth's atmosphere and is essential for most forms of life?

• Nitrogen

• Oxygen

• Carbon dioxide

• Hydrogen

Which of the following is crucial for maintaining Earth's surface temperature within a habitable range?

• 1. Greenhouse effect

• 1. Ozone layer

• 1. Polar ice caps

• 1. Tectonic plate movement

1. Earth's magnetic field is important because it:

• 1. Controls the seasons

• 1. Protects against harmful solar radiation

• 1. Regulates the carbon cycle

• 1. Generates earthquakes

1. The presence of which liquid on Earth is essential for the existence of life as we know it?

• 1. Liquid nitrogen

• 1. Liquid oxygen

• 1. Liquid methane

• 1. Liquid water

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NGSS.MS-LS1-5

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1. Earth's distance from the Sun is just right for maintaining:

• 1. Extreme heat

• 1. Extreme cold

• 1. Liquid water on the surface

• 1. A constant day-night cycle

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1. What geological feature on Earth is responsible for recycling nutrients and supporting diverse ecosystems?

• 1. Mountains

• 1. Volcanoes

• 1. Oceans

• 1. Deserts

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NGSS.MS-ESS2-1

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1. Earth's ozone layer is important because it:

• 1. Produces oxygen for respiration

• 1. Absorbs harmful ultraviolet (UV) radiation

• 1. Provides a stable climate

• 1. Filters pollution from the atmosphere

1. Which of the following characteristics of Earth is necessary for the carbon cycle, a vital process for life?

• 1. Ice caps

• 1. Rainforests

• 1. Deserts

• 1. Tectonic plates

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NGSS.MS-ESS2-1

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1. The presence of diverse ecosystems on Earth is supported by:

• 1. Extreme temperatures

• 1. High levels of pollution

• 1. Biodiversity

• 1. Lack of liquid water

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NGSS.MS-LS2-5

1. What key factor allows Earth to have a variety of climates and habitats suitable for different life forms?

• 1. Constant temperature

• 1. Earth's rotation

• 1. Lack of water

• 1. High atmospheric pressure

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NGSS.MS-ESS2-4

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