Magnets and Magnetism

What is a magnetic force?

• A visible force between two objects
• An invisible force of attraction or repulsion caused by moving electric charges
• A force that only works when objects touch
• A constant electrical current

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following metals is NOT typically used in making magnets?

• Iron
• Nickel
• Aluminum
• Cobalt

Tags

NGSS.MS-PS2-3

What happens when two magnetic poles with the same polarity are brought together?

• They attract
• They repel
• They merge
• Nothing happens

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What creates domains in magnetic materials?

• Random electron movement
• Aligned magnetic fields of atoms
• Chemical reactions
• Temperature changes

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is a permanent magnet?

• A magnet that loses its magnetism quickly
• An object that is temporarily magnetic
• An object made of matter that is permanently magnetized
• A magnet that only works in cold temperatures

Tags

NGSS.MS-PS2-3

What determines the strength of a magnet?

• Its color
• Its shape
• Its size, distance, and material
• Its weight

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NGSS.MS-PS2-3

What causes Earth's magnetic field?

• Wind currents
• Ocean movements
• Rotation of the liquid iron core
• Solar radiation

What is an electromagnet?

• A permanent magnet
• A temporary magnet created by wrapping electrical wire around an iron core
• A magnet found in nature
• A magnet that works underwater

What creates an aurora?

• Clouds
• Volcanic eruptions
• Charged particles from the sun interacting with Earth's magnetic field
• Lightning

What are magnetic field lines?

• Random lines drawn on a map
• Lines that show the direction of magnetic force
• Lines that connect continents
• Lines that measure temperature

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5