Magnetic Fields 1.4

Multiple Choice

Which of the following is most influenced by Earth's magnetic field?

• The movement of tectonic plates

• The migration patterns of animals

• The formation of clouds

• The color of ocean water

Open Ended

Why is Earth's geomagnetism important for life on our planet?

Open Ended

Why do you think a compass needle always points north? (Write your initial ideas. It is OK if you are unsure about them.)

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Multiple Select

Select all the effects that Earth's magnetic field has on compasses.

• It causes the needle to point north.

• It makes the compass needle spin continuously.

• It helps us find directions like east and west.

• It has no effect on compasses.

Fill in the Blanks

Fill in the blank: The force that surrounds Earth and affects compasses is called the Earth's

.

Multiple Choice

What is the role of Earth's magnetic field in the functioning of a compass?

• It helps the compass needle point north.

• It makes the compass needle spin randomly.

• It attracts the compass needle to the south pole.

• It has no effect on the compass needle.

Multiple Choice

Which of the following statements about magnets is correct?

• Like poles attract each other, and opposite poles repel each other.

• Like poles repel each other, and opposite poles attract each other.

• All poles attract each other.

• All poles repel each other.

Open Ended

How can you tell whether two magnets will attract each other, repel each other, or both?

Multiple Choice

What is the main purpose of using a compass, as described in the article about Earth's Geomagnetism?

• To find directions such as north, south, east, and west

• To measure temperature

• To calculate distance

• To predict weather

Multiple Select

Which of the following statements about Earth's magnetic field are correct?

• It pushes and pulls the magnetic needle in a compass

• It is created by the Earth's core

• It helps us find directions

• It is visible to the naked eye

Open Ended

What interesting or unanswered questions do you still have about the article?

Open Ended

Do you think the strategy of identifying challenging words or phrases was useful? Why or why not?

Fill in the Blanks

Compasses tell us which way is north. That helps us to find south, east, and

.

Open Ended

What questions do you still have about Earth's geomagnetism or magnetic fields after today's lesson?