Water on Earth: Uses and Importance
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Questions and Answers

Water makes up nearly two thirds of your body's mass and is necessary to keep your body ______.

functioning

All living things need water in order to carry out their body ______.

processes

Water provides ______ for many living things.

habitats

Plants use water, along with carbon dioxide and energy from the sun, to make their own food in a process called ______.

<p>photosynthesis</p> Signup and view all the answers

The water cycle includes processes such as evaporation, transpiration, and ______.

<p>precipitation</p> Signup and view all the answers

Most animals cannot survive more than a few days without ______.

<p>water</p> Signup and view all the answers

Different states in the United States have varying water use per person due to factors like ______, industry, and electric power.

<p>farming</p> Signup and view all the answers

In the graph, California has the highest water use per person per ______.

<p>day</p> Signup and view all the answers

North America's five Great Lakes contain about 20 percent of all the water in the world's ______ lakes.

<p>freshwater</p> Signup and view all the answers

Water that fills the cracks and spaces in underground soil and rock layers is called ______.

<p>groundwater</p> Signup and view all the answers

Most water that doesn't evaporate when it rains or snows soaks into the ______.

<p>ground</p> Signup and view all the answers

Far more fresh water is located underground than in all of Earth's rivers and ______.

<p>lakes</p> Signup and view all the answers

The map shows Earth's oceans and some major ______ sources.

<p>freshwater</p> Signup and view all the answers

Some organisms cannot live out of ______.

<p>water</p> Signup and view all the answers

Most of Earth's surface water — roughly 97 percent — is ______ found in oceans.

<p>saltwater</p> Signup and view all the answers

Only ______ percent of Earth's water is fresh water.

<p>3</p> Signup and view all the answers

About two thirds of the fresh water is ______ in huge masses of ice.

<p>frozen</p> Signup and view all the answers

The ______ Ocean is the largest, covering an area greater than all the land on Earth.

<p>Pacific</p> Signup and view all the answers

Icebergs are floating chunks of ice made of fresh water that break off from ______.

<p>ice sheets</p> Signup and view all the answers

The Arctic Ocean surrounds the ______.

<p>North Pole</p> Signup and view all the answers

A tiny fraction of fresh water occurs in lakes and ______.

<p>rivers</p> Signup and view all the answers

Flashcards

Evaporation

The process of water changing from a liquid to a gas. Imagine a puddle disappearing on a sunny day - that's evaporation!

Precipitation

The process of water vapor in the air changing back into liquid water, forming rain, snow, sleet, or hail. It's like those tiny water droplets in the air coming together to form bigger drops.

Groundwater

Water found below the earth's surface, often in layers of rock or soil. Imagine a giant sponge underground filled with water.

Water Cycle

The continuous movement of water on, above, and below the surface of the Earth. It's a cycle of evaporation, condensation, and precipitation.

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Habitat

The place where an organism lives and gets everything it needs to survive. Think of a fish's home in the ocean or a bird's nest in a tree.

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Transpiration

The process by which plants release water vapor into the air through their leaves. Imagine tiny water droplets being released from the plant like invisible steam.

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Why is water important?

All living things need water to function properly. Imagine the water inside your body helping you stay alive.

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Body Processes

Organisms use water to break down food, grow, reproduce, and get the things they need from their environment. For example, plants use water to make their own food.

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Aquatic Organisms

Water is essential for life, and many organisms, like sharks, live in water. However, most aquatic organisms are microscopic.

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Freshwater Scarcity

While Earth has a vast amount of water, most of it is saltwater found in oceans. Only a tiny fraction of Earth's water is fresh water.

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Frozen Freshwater

A significant portion of Earth's freshwater is locked away as ice in ice sheets and glaciers.

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Pacific Ocean - The Largest

The Pacific Ocean is the largest body of water on Earth, surpassing the size of all landmasses combined.

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Atlantic Ocean - The Second Largest

The Atlantic Ocean, though smaller than the Pacific, is still the second largest ocean in the world.

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Freshwater Availability

A small portion of fresh water is readily available for use, occurring in lakes, rivers, and underground sources.

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Groundwater vs Ice

The amount of groundwater on Earth is much less than the amount of water stored as ice.

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Ocean Water Dominance

The vast majority of Earth's water is saltwater found in oceans.

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Study Notes

Water on Earth

  • Water is essential for all living things.
  • Most of Earth's water is saltwater, and only a small percentage is freshwater.
  • Freshwater is important for drinking, farming, industry, and power generation.

Water Use

  • The graph displays water use per person daily per state in the US with the largest populations.
  • The water usage encompasses all purposes including farming and industry.
  • The top state utilizing most water is California (based on the data provided), and a state with the least usage is not clearly shown.

Where Water is Found

  • Oceans make up most of Earth's water (approximately ninety-seven percent).
  • Freshwater is found in:
    • Ice caps
    • Groundwater.
    • Rivers and lakes
    • The atmosphere

Importance of Water

  • Water is essential for body processes in all living organisms.
  • Water is crucial for food production in plants and animals.
  • Water provides habitats for a diverse range of species.

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Water on Earth PDF

Description

This quiz explores the vital role of water on Earth, including its distribution and significance. It covers freshwater and saltwater, water usage statistics across states, and the importance of water for living organisms and ecosystems. Test your knowledge on where water is found and how it supports life.

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