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Book 21, Question 75 · Video

Is Earth’s Magnetism the Same Strength Everywhere?

Video · 1:54 · Crafty Clover explains, from A Million Whys Book 21

Earth's magnetic field is not the same strength everywhere you go. It is stronger in some places and weaker in others. Northern Canada's field is much stronger than the equator's.

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What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. Is Earth’s magnetism the same strength everywhere?

The Big Idea

Earth's magnetic field is not the same strength everywhere you go. It is stronger in some places and weaker in others. Let's explore the map of Earth's field, and see where the pull is strong and where it is weak!

Strong Near the Poles

Step one: strong near the poles. Earth's magnetic field is strongest near the two magnetic poles. There it is about twice as strong as near the equator.

Weak Spots

Step two: weak spots. The field is weakest in the South Atlantic region. The field in northern Canada is much stronger than near the equator.

Always Changing

Step three: always changing. The field also changes a little over time. Scientists make new maps every few years so compasses, phones, and ships can use up-to-date information, wherever they travel.

A Closer Look

Let's take a closer look! Near the poles, the field is strongest. Near the equator, it is weaker. It is weakest of all over the South Atlantic. And it keeps slowly changing.

Quick Facts

Quick facts! Northern Canada's field is much stronger than the equator's. Near the poles, it is about twice as strong. It is weakest in the South Atlantic. Scientists make new maps every few years.

Think Like a Scientist

Now, think like a scientist! Look up a map of Earth's magnetic field strength with a grown-up. Find the strongest region. Find the weakest region. Tell a friend what you found. Share your results with someone you love.

Outro

Earth's magnetic field is not equally strong everywhere, and scientists keep making new maps. Science is amazing! Stay curious! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

Why I wrote this