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What Is the Cryosphere

Interactive passage with audio narration, comprehension questions, and printable PDF.

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Format: Interactive (Online), Printable (PDF)
Grades: 678
Subjects: scienceela
Standards: MS-ESS2-1
Languages: English, Spanish

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What's included

Reading passage

Reading comprehension

Audio narration

With word word highlighting

Comprehension quiz

Auto-graded

Writing activity

Open-ended response

Glossary & flashcards

Vocabulary practice

Differentiated version

Adapted for varied levels

Spanish translation

Bilingual support

About this reader

This comprehensive reading passage introduces middle school students to the cryosphere and its essential role in Earth's systems. Aligned with NGSS standard MS-ESS2-1, the passage explores how ice sheets, glaciers, and sea ice regulate Earth's energy balance through the albedo effect and influence the global water cycle. Students learn about the different components of the cryosphere, from massive Antarctic ice sheets to seasonal sea ice, and understand how these frozen regions reflect solar radiation and store freshwater. The passage includes audio integration for enhanced accessibility, real-world examples, and differentiated versions for struggling readers and English Language Learners. Activities include comprehension questions, writing prompts, and graphic organizers that help students analyze cause-and-effect relationships and compare different cryosphere components. This curriculum resource provides educators with standards-aligned content that builds scientific literacy while addressing the critical topic of Earth's frozen water systems.

Written by Workybooks TeamPublished by Workybooks

Sample passage and quiz content

CONTENT PREVIEW

"A Tour of the Antarctic Cryosphere NASA" by Michael Studinger, Lamont-Doherty Earth Observatory / Wikimedia Commons

The cryosphere is the term scientists use to describe all the frozen water on Earth. This includes ice sheets, glaciers, sea ice, snow cover, and frozen ground called permafrost. The cryosphere exists primarily in polar regions near the North and South Poles, but also in high mountain areas around the world. Although frozen water covers only about 10 percent of Earth's surface today, it plays a crucial role in regulating our planet's climate and water systems.

Ice sheets are the largest components of the cryosphere. These massive layers of ice cover entire continents and can be several kilometers thick. Earth has two major ice sheets: the Antarctic ice sheet in the Southern Hemisphere and the Greenland ice sheet in the Northern Hemisphere. The Antarctic ice sheet alone contains about 90 percent of all ice on Earth. These ice sheets formed over thousands of years as snow accumulated and compressed into solid ice. Glaciers are similar to ice sheets but smaller in size. They form in mountainous regions where snow accumulates faster than it melts. Glaciers flow slowly downhill under their own weight, carving valleys and shaping landscapes as they move.

Sea ice forms when ocean water freezes. Unlike ice sheets and glaciers that form on land, sea ice floats on the ocean surface. The Arctic Ocean is covered by sea ice year-round, though the amount varies with the seasons. In winter, sea ice also forms around Antarctica. Sea ice is typically only a few meters thick, much thinner than ice sheets. When sea ice melts, it does not raise sea levels because it was already floating in the ocean. However, when land-based ice sheets and glaciers melt, they add water to the oceans and cause sea levels to rise.

The cryosphere plays a vital role in regulating Earth's energy balance through a process called the albedo effect. Albedo refers to how much sunlight a surface reflects back into space. Ice and snow are white, so they reflect about 80 to 90 percent of incoming solar radiation. This reflection helps keep polar regions cold. In contrast, darker surfaces like ocean water or bare ground absorb more sunlight and warm up. When ice melts and exposes darker surfaces beneath, less sunlight gets reflected and more heat gets absorbed. This creates a feedback loop where warming causes ice to melt, which leads to more warming.

The cryosphere also influences Earth's water cycle in important ways. Ice sheets and glaciers store about 68 percent of Earth's freshwater. This frozen water represents a massive reservoir that affects ocean salinity, sea levels, and freshwater availability. When glaciers melt during warmer months, they release water that feeds rivers and provides drinking water for millions of people. Many communities in Asia, South America, and other regions depend on glacial meltwater for agriculture and daily needs. The seasonal formation and melting of sea ice affects ocean currents and marine ecosystems, influencing weather patterns far from polar regions.

Scientists monitor the cryosphere closely because changes in ice coverage indicate broader climate changes. Satellite observations show that Arctic sea ice extent has decreased significantly over recent decades. Glaciers worldwide are retreating, and ice sheets are losing mass. These changes affect not only polar regions but the entire planet. Understanding the cryosphere helps scientists predict future climate conditions, sea level rise, and impacts on ecosystems and human communities.

Interesting Fact: If all the ice in the Antarctic ice sheet melted, global sea levels would rise by approximately 58 meters (190 feet), enough to submerge many coastal cities around the world.

What is the cryosphere?

All the liquid water on EarthAll the frozen water on EarthAll the water vapor in the atmosphereAll the underground water on Earth

Which two locations have Earth's major ice sheets?

Alaska and CanadaAntarctica and GreenlandArctic Ocean and Pacific OceanHimalayas and Rocky Mountains

What happens to sea levels when sea ice melts?

Sea levels rise significantlySea levels dropSea levels do not change because the ice was already floatingSea levels rise only in polar regions

Based on the passage, what does the term 'albedo' refer to?

The thickness of ice sheetsHow much sunlight a surface reflectsThe speed at which glaciers moveThe amount of frozen water on Earth

What percentage of Earth's freshwater is stored in ice sheets and glaciers?

About 10 percentAbout 25 percentAbout 50 percentAbout 68 percent

How does the melting of ice create a feedback loop?

Melting ice makes the water colder, which freezes more iceMelting ice exposes darker surfaces that absorb more heat, causing more meltingMelting ice increases snowfall in polar regionsMelting ice makes glaciers move faster down mountains

Why do scientists monitor the cryosphere closely?

To count how many glaciers existTo study ancient ice formationsTo predict future climate conditions and sea level riseTo find new sources of drinking water

Which statement best describes the difference between glaciers and sea ice?

Glaciers form on land and move downhill; sea ice forms on the ocean and floatsGlaciers are thinner than sea iceGlaciers only exist in Antarctica; sea ice only exists in the ArcticGlaciers melt in winter; sea ice melts in summer

True or False: The Antarctic ice sheet contains about 90 percent of all ice on Earth.

TrueFalse

True or False: Dark surfaces like ocean water reflect more sunlight than ice and snow.

TrueFalse