Magnetism

What is magnetism?

• A) A force that pushes magnetic material away

• B) A force that pulls magnetic material across a distance

• C) A force that has no effect on magnetic material

• D) A force that only works on non-magnetic materials.

Answer explanation

Magnetism is a force that attracts magnetic materials, acting over a distance. Therefore, the correct answer is B, as it accurately describes this attractive force.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Magnetism is a force that (a)   magnetic material across a distance.

• pushes
• pulls
• ignores
• repels

Answer explanation

Magnetism is a force that attracts or 'pulls' magnetic materials towards itself. The correct choice is 'pulls' as it accurately describes the interaction between magnets and magnetic materials.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Fill in the blank: To repel means to cause something to move ______.

• closer

• away

• sideways

• backwards

Answer explanation

To repel means to cause something to move away. The term 'repel' specifically indicates a force that drives objects apart, making 'away' the correct choice.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following is an objective of the lesson?

• To understand how magnets can only repel

• To describe that magnets can attract magnetic materials

• To ignore the effects of magnetism

• To learn about non-magnetic materials.

Answer explanation

The correct objective is to describe that magnets can attract magnetic materials, as this is a fundamental property of magnets. The other options either misrepresent magnetism or are irrelevant to the lesson's focus.

Tags

NGSS.3-PS2-4

Match the following statements about magnets with their correct descriptions.

• Magnets have a unidirectional force

• Magnets can only attract

• Magnets are neutral to each other

• Magnets can only repel

• Magnets have a bidirectional force

• Magnets have no effect on each other

• Magnets have a repulsive force only

• Magnets can attract or repel other magnets

Answer explanation

The correct answer is that magnets can attract or repel other magnets. This is fundamental to understanding magnetism, as magnets have two poles: north and south, which interact in these ways.

Fill in the blank: Magnets can ______ other magnets.

• only attract

• attract or repel

• only repel

• ignore

Answer explanation

Magnets can attract or repel each other depending on their poles. Like poles repel, while opposite poles attract, making 'attract or repel' the correct choice.

When the south pole of one magnet is brought near the south pole of another magnet, they (a)   each other.

• They attract each other
• They repel each other
• They do nothing

Answer explanation

When the south pole of one magnet is brought near the south pole of another magnet, they repel each other due to the magnetic force. Like poles always repel, while opposite poles attract.

Tags

NGSS.MS-PS2-3

Magnetism is a force that ______ magnetic materials across a distance.

• pushes

• pulls

• repels

Answer explanation

Magnetism is a force that pulls magnetic materials towards itself. This attraction occurs due to the magnetic field generated by magnets, making 'pulls' the correct choice.

Tags

NGSS.MS-PS2-5

An object that is magnetic will be (a)   to a magnet.

• repelled
• attracted
• unaffected

Answer explanation

If an object is magnetic, it will be attracted to a magnet. This is because magnets exert a force on magnetic materials, pulling them towards themselves.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What will happen if you hold a magnet near a metal safety pin?

• The pin will be repelled

• The pin will be attracted

• The pin will melt

Answer explanation

When a magnet is brought near a metal safety pin, the pin, being made of ferromagnetic material, will be attracted to the magnet due to the alignment of its magnetic domains. Thus, the correct answer is that the pin will be attracted.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5