How much of Earth is water?

• 31%

• 51%

• 71%

• 100%

Answer explanation

71% of Earth is water, making it the correct choice among the options provided.

Tags

NGSS.MS-ESS2-4

How much of Earth's water is salt water?

• 5%

• 96.5%

• 100%

Answer explanation

96.5% of Earth's water is salt water, making it the correct choice.

Tags

NGSS.HS-ESS2-5

True or False: Water made life possible on Earth.

• True

• False

Answer explanation

True because water is essential for life as we know it, providing the necessary conditions for biochemical reactions and supporting various forms of life on Earth.

True or False: Almost all Earth’s water is in the oceans.

• True

• False

Answer explanation

True because approximately 97% of Earth's water is in the oceans, making it the largest reservoir of water on the planet.

Tags

NGSS.MS-ESS2-4

True or False: Most freshwater is in ice.

• True

• False

Answer explanation

True because approximately 68.7% of the world's freshwater is stored in glaciers and ice caps, making ice the largest reservoir of freshwater on Earth.

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

True or False: The Atlantic Ocean is saltier than the Pacific Ocean

• True

• False

Answer explanation

True because the Atlantic Ocean is saltier than the Pacific Ocean due to higher evaporation rates and more rivers flowing into it, bringing in more salt.

True or False: Our bodies are mostly water.

• True

• False

Answer explanation

True because our bodies are composed of approximately 60% water, making it the most abundant component in our bodies.

Tags

NGSS.MS-ESS2-4

Some freshwater is locked in Earth's:

• Oceans

• Water Vapor

• Seas

• Glaciers

Answer explanation

Some freshwater is locked in Earth's glaciers, not in oceans, water vapor, or seas.

Tags

NGSS.MS-ESS2-4

Less than 1 percent of Earth's water supply comes from ____________ stored in streams, rivers, and lakes.

• Surface water

• Trees

• Groundwater

• My water faucet

Answer explanation

Less than 1 percent of Earth's water supply comes from surface water stored in streams, rivers, and lakes.

Tags

NGSS.MS-ESS2-4

The Water brought to the surface from deep holes is:

• Freshwater

• Precipitation

• Groundwater

• Evaporation

Answer explanation

The water brought to the surface from deep holes is groundwater, as it comes from underground sources rather than precipitation or evaporation.

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1