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Grade 5

1562 records found. Displaying 1513 - 1524.

Science

Why Air Is Important

Air is essential for all living things on Earth. It provides the oxygen we need to breathe. Air affects the weather and nature, and can be used as a source of clean, renewable energy. But air More →

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Science

Why Are Oceans Important?

Why are oceans some of Earth's most important resources? This title explores the many ways humans and other living things depend on oceans, from helping to clean the air and regulating the… More →

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Animals

Why do animals become extinct?

Animals have become extinct for many reasons. The most famous example, the extinction of the dinosaurs, may have been the result of an asteroid hitting Earth or an Ice Age freezing them to… More →

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Science

Why do animals migrate?

Autumn is the time that many birds fly to places with warmer climates. Spring signals their return trip. Many birds migrate to keep warm and to find food that is not available in their winter More →

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Why Doesn't the Moon Fall Out of the Sky?

How can a plane fly upside down? Why aren't there any super-giant humans? Why doesn't the Moon fall out of the sky? answers all these intriguing questions about the science of forces, and much more. More →

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High Interest

Why Is Ice Slippery?

Where does water go when it dries? Why do eggs go solid when you cook them? Why is ice slippery? answers all these intriguing questions about the science of materials, and much more. More →

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Health

Why We Need Carbohydrates

Even though carbohydrates have been given a bad rap in recent years, they are essential for maintaining good health. This fascinating title examines the chemical structure of carbohydrates… More →

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Health

Why We Need Fats

There is a great deal of fuss about fat! Fat is an essential nutrient for optimal health, however too much fat can lead to health problems. This informative title helps clear up the confusion More →

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Health

Why We Need Minerals

Minerals are essential to maintaining good health. They boost our immune systems, support normal growth and development, and help cells and organs function. This engaging title explores the… More →

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Health

Why We Need Proteins

Protein is essential to all life. Our organs, bones, muscles, skin, and hair either contain or are made of proteins. This engaging title explains how our bodies break down large protein… More →

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