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Earth Science

Earth Science Helps Students Understand Their World

The study of Earth science helps educators give students a means to understand the world around them. Students can use Vernier sensors, interfaces, software, and investigations to explore seafloor spreading, the effect of acid rain on soil, the changing of the seasons, and more.

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Featured Earth Science Lab Books

Featured Earth Science Experiments

Soil pH

When you think of pH, you probably think of liquid acids and bases. But soil can be acidic or basic, too. Soil pH, sometimes referred to as soil acidity, can be expressed using the pH scale. The pH scale ranges from 0 to 14. Soils with pH above 7 are basic or sweet. Soils with pH below 7 are acidic or sour. A soil with a pH of 7 is neither acidic nor basic, but is neutral.

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Where IS North?

It depends. Do you mean geographic north or magnetic north? The geographic (true) north pole is the point at 90° N latitude. It is aligned with Earth’s rotational axis. Earth is surrounded by a magnetic field with a north and south magnetic pole. The magnetic north pole is the point to which a compass needle points. It is currently in northern Canada, and is constantly moving due to complex fluid motion in the outer core of Earth. Depending on your location, the difference between magnetic north and geographic north, called magnetic declination, can range from 0° to 30°.

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