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Ice Age: When Glaciers Covered Land — Reading Comprehension

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This engaging science passage for grades 4-5 explores the fascinating Ice Age, a time when much of Earth's land was covered by thick glaciers. Students will learn about the causes of the Ice Age, how glaciers form and move, and how these giant ice sheets shaped the land around us. Key vocabulary terms are highlighted and defined to support learning. The passage also discusses real-world evidence of the Ice Age, such as rocks and valleys carved by glaciers, and explains why understanding our planet's past is important for the future. Designed to meet NGSS science standards, this resource encourages students to think critically about cause and effect in nature and to connect scientific ideas to everyday experiences. Audio integration ensures accessibility for all learners. Includes a glossary, a Spanish translation, an 8-question multiple choice quiz, and thought-provoking writing activities. Perfect for science classrooms and independent study.

CONTENT PREVIEW

winter, snow, ice age, nature, cold, wintry, mystical — Huge parts of the land were covered by thick sheets of ice called glaciers in Ice Age. Image by tbasien /
Source: Pixabay.

An ice age is a time when Earth's climate becomes much colder than normal and huge sheets of ice cover large parts of the land. These enormous sheets of ice are called glaciers. A glacier is a thick mass of ice that forms when snow piles up year after year and gets packed down into solid ice. Throughout Earth's history, there have been several ice ages.

During the most recent ice age, which ended about 10,000 years ago, glaciers covered much of North America, Europe, and Asia. Some of these ice sheets were more than a mile thick! Glacial movement happens when glaciers become so heavy that they slowly slide across the land, kind of like a very slow river of ice. As glaciers moved, they acted like giant bulldozers. They scraped the land beneath them, carved deep valleys, and pushed huge piles of rock and soil ahead of them.

When the climate warmed up and the glaciers melted, they left behind completely changed landscapes. The melting ice created new lakes, formed hills made of the rocks and soil the glaciers had pushed, and left behind wide valleys. Many familiar features we see today were shaped by glaciers. The Great Lakes, many valleys in the northern United States, and rounded hills were all created by glacial activity. This evidence of ice ages shows us that Earth's climate and surface have changed many times throughout history.

Interesting Fact: During the last ice age, so much water was frozen in glaciers that the ocean level was about 400 feet lower than it is today. You could have walked from Asia to North America across a land bridge that is now underwater!

What is a glacier?

A thick mass of packed iceA type of snow stormA frozen lakeA cold wind

When did the most recent ice age end?

About 1,000 years agoAbout 10,000 years agoAbout 100,000 years agoAbout 1 million years ago

Which continents were covered by glaciers?

Africa, Australia, and South AmericaOnly North AmericaNorth America, Europe, and AsiaAntarctica only

How did glaciers change the landscape?

They only made it colderThey carved valleys and created lakesThey made mountains tallerThey had no effect

What landforms were created by glaciers?

Deserts and canyonsVolcanoes and hot springsGreat Lakes, valleys, and rounded hillsRivers and waterfalls only

Why did glaciers move across land?

Wind pushed themThey were so heavy they slidEarthquakes moved themPeople pushed them