Magnet & Magnetic Field worksheet - Free Printable

Let's solve each part of the problem step by step:

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1. Put T for true & F for false statements below:

- A- Magnetic force do not vary with distance.
- False (F): Magnetic force does vary with distance. It decreases as the distance between two magnets increases, following an inverse square law.

- B. Opposite magnetic poles repel one another.
- False (F): Opposite magnetic poles attract each other. Like poles (N-N or S-S) repel, and opposite poles (N-S or S-N) attract.

- C. Magnetic force act over a distance.
- True (T): Magnetic force is a non-contact force that acts over a distance through the magnetic field.

Answer:
- A: F
- B: F
- C: T

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2. Look at figure below: Where is the magnetic field strongest?

The figure shows a bar magnet with field lines. The density of the field lines indicates the strength of the magnetic field:
- The field lines are most concentrated near the poles.
- Therefore, the magnetic field is strongest at the poles.

Answer:
- c) Poles

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3. Jordan places four ring magnets A, B, C, and D onto a wooden stand as shown. If he wants the four ring magnets to be attracted to each other, which magnet A, B, C, or D should he flip?

#### Analysis:
- Magnets attract when opposite poles face each other (N-S or S-N).
- From the diagram:
- Magnet A is oriented with its S pole facing downward.
- Magnet B is oriented with its N pole facing upward.
- Magnet C is oriented with its S pole facing downward.
- Magnet D is oriented with its N pole facing upward.

To ensure all magnets attract each other:
- A and B are already attracting (S-N).
- B and C are repelling (N-S).
- C and D are attracting (S-N).

To fix the repulsion between B and C, we need to flip C so that its N pole faces upward. This will make B and C attract (N-N becomes N-S).

Answer:
- Flip C.

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4. The types of metals that can be attracted by magnets are ...

#### Explanation:
- Metals that can be attracted by magnets are called ferromagnetic materials. These include:
- Iron
- Nickel
- Cobalt
- Some alloys (e.g., steel)

Answer:
- Iron, Nickel, Cobalt

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5. Based on the figure below, what would you expect to happen between the two magnets?

The figure shows two magnets with their south poles (S) facing each other. Since like poles repel, the two magnets will repel each other.

Answer:
- The magnets will repel each other.

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6. Put T for true & F for false statements below:

- A. A magnetic field is strongest near north & south poles of magnet.
- True (T): The magnetic field is indeed strongest near the poles of a magnet, where the field lines are most concentrated.

- B. Magnetic field surround magnet & show region of its magnetic force.
- True (T): The magnetic field surrounds a magnet and represents the region where its magnetic force can be felt.

- C. Field line begin near South Pole and extend towards North Pole.
- True (T): By convention, magnetic field lines start near the South Pole and end near the North Pole outside the magnet.

Answer:
- A: T
- B: T
- C: T

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7. Chose the write term for each statement of the following:

#### Definitions:
- Can be magnetized due to its domains: This refers to ferromagnetic materials.
- Domains are randomly oriented: This describes a non-magnetized material.
- Regions that has many atoms with aligned magnetic field: This refers to domains in a magnetized material.

#### Matching:
- A. Can be magnetized due to its domains.
- Ferromagnetic materials

- B. Domains are randomly oriented.
- Non-magnetized material

- C. Regions that has many atoms with aligned magnetic field.
- Domains

Answer:
- A: Ferromagnetic materials
- B: Non-magnetized material
- C: Domains

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Final Answers:

1. A: F, B: F, C: T
2. c) Poles
3. Flip C
4. Iron, Nickel, Cobalt
5. The magnets will repel each other.
6. A: T, B: T, C: T
7. A: Ferromagnetic materials, B: Non-magnetized material, C: Domains

Boxed Final Answer:
\[
\boxed{
\text{1. A: F, B: F, C: T; 2. c) Poles; 3. Flip C; 4. Iron, Nickel, Cobalt; 5. Repel; 6. A: T, B: T, C: T; 7. A: Ferromagnetic materials, B: Non-magnetized material, C: Domains}
}
\]