Hydrosphere Review

What is the hydrosphere?

• The layer of rocks and soil on the Earth's surface.

• All the water on Earth, including water in the oceans, rivers, lakes, and underground.

• The layer of gases surrounding the Earth.

• All the land on Earth, including mountains, deserts, and forests.

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What percentage of the Earth's surface is covered by water?

• 50%

• 90%

• 25%

• 71%

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What percentage of Earths water is freshwater?

• 97%

• 50%

• 2.5%

• 7%

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Name the four main components of the hydrosphere.

• Mountains, deserts, forests, and glaciers

• Volcanoes, canyons, plateaus, and valleys

• Oceans, rivers, lakes, and groundwater

• Clouds, snow, icebergs, and hail

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What is the difference between saltwater and freshwater?

• Saltwater has a high concentration of salt, while freshwater has a low concentration of salt.

• Saltwater has a low concentration of salt, while freshwater has a high concentration of salt.

• Saltwater and freshwater have the same concentration of salt.

• Saltwater is not suitable for marine life, while freshwater is suitable for marine life.

Explain the water cycle and its importance to the hydrosphere.

• The water cycle only affects saltwater sources and has no impact on freshwater

• The water cycle is not important to the hydrosphere as it has no impact on the distribution of water

• The water cycle is important to the hydrosphere but does not support any ecosystems

• The water cycle is important to the hydrosphere as it regulates the distribution of water across the Earth, replenishes freshwater sources, and supports various ecosystems.

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How do humans impact the hydrosphere?

• Human activities such as promoting biodiversity and reducing carbon emissions

• Human activities such as pollution, deforestation, and urbanization

• Human activities such as planting trees and conserving water

• Human activities such as reducing pollution and protecting wetlands

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What are some examples of hydrosphere pollution?

• Noise pollution, light pollution, thermal pollution

• Oil spills, industrial waste, plastic pollution

• Air pollution, deforestation, soil erosion

• Radioactive waste, acid rain, ozone depletion

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Describe the importance of oceans in the hydrosphere.

• Oceans have no impact on the hydrosphere

• Oceans do not affect weather patterns

• Oceans are only important for fishing

• Oceans help regulate the Earth's climate, provide habitat for marine life, and influence weather patterns.

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All water that is frozen in a solid state is part of the ________.

• Atmosphere

• Cryosphere

• Geosphere

• Biosphere

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