71 POINTS HELP!!!!!!!!!

A magnet can hold a piece of paper to the door of a refrigerator. How does the magnet stick without touching the door?
Group of answer choices

The magnetic force of the magnet can act at a distance.

The magnet induces a magnetic field in the paper.

Gravity attracts the magnet to the door.

Atoms from the magnet pass through the paper and touch the door.



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Question 5 8.33 pts
Giovanni sprinkled iron filings around a magnet. Which of the following did Giovanni most likely see?
Group of answer choices

The iron filings randomly falling around the magnet

The iron filings spread evenly around the magnet.

The iron filings lining up with the magnetic field lines

The iron filings accumulating only at the poles of the magnet

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Question 8 8.33 pts
If you increase the distance between two magnets, what will happen?
Group of answer choices

The magnetic attraction will decrease.

The magnetic attraction will strengthen.

The magnetic attraction will stay the same.

The magnetic attraction will increase.



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Question 10 8.34 pts
Another student made an electromagnet with an iron nail with eight coils of wire wound around it connected to a 2-V battery. She wants to increase the strength of the electromagnet. What changes can she make to her design to increase its strength? Select all that apply.
Group of answer choices

wrap more coils of wire around the nail

use two 1-V batteries instead of a 2-V battery

use a longer wire

use a 4-V battery

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Question 11 8.34 pts
Jazelle has five different-sized magnets. She puts each magnet far away from a paper clip and slowly moves it closer until it attracts the paper clip. She records the distance between the magnet and the paper clip when it attracts. What is Jazelle's experiment designed to test?
Group of answer choices

how the type of paper clip affects the way in which it reacts to the force of a magnet

how the magnetic force of a magnet affects the movement of an object

how the size of a paperclip affects the strength of its magnetic pull on objects

how the size of a magnet affects the strength of its magnetic pull on objects

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Question 12 8.34 pts
Kayla has two magnets. She would like to know how much magnetic energy is stored in each one. What would be the best way for her to determine which magnet has the most magnetic energy?
Group of answer choices

Attach wires to the ends of each magnet and measure the currents going through the wires

Measure how close each magnet can get to a metal object before picking it up.

Record the mass of each magnet by measuring it on a balance scale.

Put each magnet into a beaker of water to see how much water it displaces