A teacher wants to find out how distance will impact the strength of the magnetic field. She uses a ruler to measure the distance between a magnet and several paper clips that are located at different distances. What does she observe?

Question

options:

The closer the paper clips are to the magnet, the more they are attracted to it
The closer the paper clips are to the magnet, the more they are attracted to it

The closer the paper clips are to the magnet, the less they are attracted to it.
The closer the paper clips are to the magnet, the less they are attracted to it.

There is no attraction between the magnet and any paper clips.
There is no attraction between the magnet and any paper clips.

The distance does not impact the strength of the magnet.

Answer 1

The correct observation the teacher would likely make is:

The closer the paper clips are to the magnet, the more they are attracted to it.

This statement reflects the principle that the strength of a magnetic field decreases with increased distance from the magnet. As the paper clips get closer to the magnet, the magnetic force acting on them increases, resulting in a stronger attraction.

Answer 2

On a table there is a collection of materials including an iron nail, a wooden pencil, a glass rod, a piece of copper wire, a piece of string, a 3.5-volt battery, and a 6-volt battery. Which list of materials would allow you to make the strongest electromagnet?

options:

wooden pencil, string, 3.5-volt battery
wooden pencil, string, 3.5-volt battery

Glass rod, copper wire, 6-volt battery
Glass rod, copper wire, 6-volt battery

iron nail, copper wire, 6-volt battery
iron nail, copper wire, 6-volt battery

iron nail, copper wire, 3.5-volt battery

Answer 3

The strongest electromagnet can be made with:

iron nail, copper wire, 6-volt battery

Using an iron nail as the core material significantly enhances the magnetic field strength due to its ferromagnetic properties. The copper wire is used to create the coil around the nail, and the 6-volt battery provides a higher voltage which increases the current through the wire, further strengthening the electromagnet.

Answer 4

Three friends climb a mountain and are standing at the top after their long hike. The friends want to know who is feeling the most pull from Earth's gravity. How can this be determined?

options:

by finding out which person has the most volume, because they will have more gravitational pull
by finding out which person has the most volume, because they will have more gravitational pull

by finding out which person has the most mass, because they will have more gravitational pull
by finding out which person has the most mass, because they will have more gravitational pull

by finding out which person is stronger, because they will have less gravitational pull
by finding out which person is stronger, because they will have less gravitational pull

by finding out which person climb the mountain faster, because they will have less gravitational pull

Answer 5

The correct way to determine who is feeling the most pull from Earth's gravity is:

by finding out which person has the most mass, because they will have more gravitational pull.

Gravity pulls objects toward the Earth with a force that is proportional to their mass. Therefore, the person with the most mass will experience a greater gravitational force.