Magnets Multiple Choice Test

What must happen for an electromagnet to have a magnetic field?

Sam was shown four objects, one of which did not contain a magnet. Which should be selected as the one that does NOT contain a magnet?

What substance is attracted to a magnet?

What happens when two north poles of magnets are placed together?

What is our best evidence that Earth has a magnetic field?

Which of the following would be the best way to observe and compare the magnetic fields of various magnets?

Earth's magnetic field and bar magnets both attract particles to the same location. Where are they?

A circuit, coiled wire around an iron rod, and a switch are components of which of the following?

What characteristics do magnetic substances have? They

The fact that a compass needle is designed to always point north tells us what?

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