Magnetism test review

Which effect does the right hand rule identify?

• The direction of lines of force surround a current carrying conductor

• the direction for reluctance in a current carrying conductor

• the direction for retentivity in a current carrying conductor

• the direction for residual magnetism in a current carrying conductor

The magnetic domains in this substance are not highly aligned. This substance is therefore

• magnetized

• unmagnetized

• positively charged

• negatively charged

What will happen when these magnets are brought close together?

• They will attract each other.
• They will repel each other.
• Both magnets will turn to the left
• Both magnets will turn to the right

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

You know this substance is magnetized because

• all the domains have right angles

• the arrows are drawn in red

• the domains are highly aligned

• the domains are random

Earth acts like a giant magnet due to ______________________.

• gravity

• geothermal activity

• convection currents in the molten core

• solar radiation

This large crane magnet functions only when the electrical current is ON. The crane magnet is an example of what type of magnet?

• NIB magnet

• ceramic magnet

• electromagnet

• funnel magnet

Mark all TRUE statements regarding magnets. (2 correct answers)

• Magnets have North and South seeking poles.

• If a bar magnet is broken in half, one half will be completely North pole, and the other will be completely South pole.

• If a bar magnet is broken in half, each half will be a complete magnet, containing both North and South poles.

• Iron is ALWAYS magnetic.

• ALL metallic elements are magnetic.

Mark 2 correct answers: Which is true farther from a magnet?

• Field lines are closer together.

• Field lines are farther apart.

• The magnetic field is weaker.

• The magnetic field is stronger.

Which letter is the symbol for the magnetic field?

• A

• B

• N

• U

Which of the following do we use as evidence of Earth's changing magnetic field over time? (only 1 correct answer.)

• Earth's tilt on its axis.

• The vernal equinox.

• Iron deposits become magnetized in the direction of Earth's magnetic field.

• Formation of new crust at the mid-ocean ridge.