Week 33 HW physics

What are magnets made of?

• Objects with atoms oriented so that the material repels iron.

• Objects with atoms oriented so that the material attracts iron.

• Objects with atoms disoriented in random directions.

• Objects that only attract copper and aluminum.

Can magnets be temporary?

• No, they can only be permanent.

• Yes, they can only be temporary.

• Yes, they can be permanent or temporary.

• No, they are neither permanent nor temporary.

Tags

NGSS.MS-PS2-3

What is a characteristic of all magnets?

• They are always monopolar.

• They are never dipolar.

• They are always dipolar.

• They can sometimes be tripolar.

What is a magnetic field?

• A region in space where electric charges experience a force

• An area where magnets would experience a force

• A type of energy emitted by the sun

• A force that only affects metallic objects

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following is true about Earth in terms of magnetic fields?

• Earth does not have a magnetic field

• Earth has a magnetic field that affects weather patterns

• Earth has a magnetic field

• Earth's magnetic field is strongest at the equator

How are magnetic fields represented in scientific notation?

• With an E

• With an M

• With a B

• With an F

Since more magnetic field lines cross the area that is near the pole of a magnet, what does this indicate about the magnetic field strength in that location?

• The magnetic field strength is weaker.

• The magnetic field strength is the same as in other areas.

• The magnetic field strength is stronger.

• The magnetic field strength cannot be determined by the number of lines.

Tags

NGSS.MS-PS2-5

What do current carrying wires produce?

• A) A magnetic field

• B) A gravitational field

• C) A force field

• D) An electric charge

Tags

NGSS.MS-PS2-3

Which rule is used to determine the direction of the magnetic field around a current-carrying wire?

• A) Left hand rule

• B) Right hand rule

• C) Thumb rule

• D) Grip rule

Tags

NGSS.HS-PS2-5

The right-hand rule states that the thumb of the right hand is to be placed in what direction when grasping a wire?

• In the direction of the electric current

• Opposite to the direction of the electric current

• Perpendicular to the wire

• In the direction of the magnetic field

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5