T3L2HW

How can you identify the magnetic north pole of an unlabeled magnet using a labeled magnet?

• Hold the magnets together and see which one spins.

• Use the labeled magnet to repel one end of the unlabeled magnet; the repelled end is the north pole.

• Use the labeled magnet to attract one end of the unlabeled magnet; the attracted end is the north pole.

• Place the magnets on a metal surface and see which one sticks first.

How would increasing the magnetic force of a magnet change the pattern of magnetic field lines between its poles?

• The field lines would spread farther apart.

• The field lines would become more concentrated and closer together.

• The field lines would disappear.

• The number of field lines would stay the same.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What happens to potential energy when you pull a magnet off a refrigerator door?

• The potential energy decreases as the magnet is pulled away.

• The potential energy increases as the magnet is pulled away.

• The potential energy stays the same.

• Potential energy doesn’t apply to magnets.

Tags

NGSS.MS-PS3-2

Why is the electrical charge on particles in the solar wind an important element of the protection that Earth's magnetic field provides?

• It helps the solar wind generate heat for Earth’s atmosphere.

• The charges interact with Earth’s magnetic field to create auroras.

• Earth’s magnetic field deflects the charged particles, protecting the atmosphere.

• The charges cause the solar wind to become weaker.

What happens to the direction of magnetic field lines near a bar magnet?

• They flow in a straight line away from the magnet.

• They form closed loops from the north pole to the south pole.

• They spread randomly around the magnet.

• They only appear near the magnet's north pole.

What effect does increasing the distance between two magnets have on the magnetic force between them?

• The magnetic force increases.

• The magnetic force decreases.

• The magnetic force remains constant.

• The magnetic force reverses direction.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following is true about Earth's magnetic field?

• It repels solar wind particles entirely.

• It creates a protective shield called the magnetosphere.

• It is the result of Earth’s rotation alone.

• It only exists at the north and south poles.

How does a compass work in relation to Earth's magnetic field?

• The compass needle aligns with Earth's gravitational pull.

• The compass needle aligns with Earth's magnetic field.

• The compass needle points away from the poles.

• The compass needle generates its own magnetic field.

What happens to the magnetic force between two magnets if one magnet’s strength is doubled?

• The force remains the same.

• The force is halved.

• The force is doubled.

• The force becomes weaker.

Tags

NGSS.MS-PS2-3

How can you demonstrate the interaction between magnetic poles?

• Place two north poles together and observe them attract.

• Place a north pole near a south pole to observe repulsion.

• Place two like poles near each other and observe them repel.

• Place a magnet near a wooden object to observe interaction.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5