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What are magnetic fields in simple terms?

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give an example of an object that has a magnetic field?

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Can we live without a magnetic field? ( explain )

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How do you represent a magnetic field ?

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1. What happens when you cut a magnet in half?
2. How does the magnetic field help protect life on earth?
3.  Give examples of common use of magnets
4. Why does a magnetic compass point to the geographic north pole?

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1. What is the common use for magnets?
2. If you cut a magnet in half, what will happen?
3. What produces magnetic fields?
4. Which combination of magnetic poles will repel each other?
5.How many poles does a bar magnet have?
6. Why does the Earth have a magnetic field?
7.What tool can be used to map a magnetic field?

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1. True or false: the north and south poles are closed, they do not form loops.
2. What do magnetic domains create?
3. Why are spins usually written in opposite sides (spun up and spun down)?
4. What can lead to ferromagnetism?

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Choose the correct answer.
Magnetic fields are represented by:

1.Magnetic field lines
2.Electric field lines
3.Straight lines
4.none of the option

What is the test for a permanent magnet?

1.The magnet attracts another magnet
2.The magnet repels a magnetic material
3.The magnet repels another magnet

Which combination of magnetic poles will repel each other?

1.North and north
2.North and south
3.South and north

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How does the magnetic field work?

How do the northern lights form?

What happens if the magnetic field does not exist in the earth?

What direction does the magnet point towards?

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- Magnetic fields are represented by magnetic field lines (1).
- The test for a permanent magnet is that the magnet repels another magnet (3).
- The combination of magnetic poles will repel each other are the north and south poles (2 and 3)

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A) 1: magnetic field lines
B) 1/3: attracts or repels other magnets
C) 1: north and north

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1. magnetic field lines
2. the magnet  attracts a another magnet
3. north and south

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1. False.
2. Magnetic domains create magnetic fields.
3. Spins are usually written in opposite sides in order to cancel each other.
4. When substances have unpaired electrons, that leads to ferromagnetism.

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1 ) The force generated by the aligned atoms creates a magnetic field.
2 )  northern light occure when charged particles (electrons and protons) collide with gases in Earth's upper atmosphere.
3 )the solar wind would strip our atmosphere, and the oceans would evaporate and be lost to space. In other words, Earth would end up like Mars.
4 ) the magnet will point nord .

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- Magnetic fields work just like electric fields. The field lines appear to begin at the north pole of the magnet and end at the south pole, but they do not have a starting and ending point, they are all loops.
- This question is irrelevant.
- If the magnetic fields does not exist in the earth, the solar wind could render life on earth impossible.
- The magnet points towards the north.

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1)Magnets are used to make a tight seal on the doors to refrigerators and freezers

2)when a bar magnet is cut into half both the halves will have a north pole and a south pole each

3)A magnetic field can be produced by either a current, a flow of charged particles or a magnetised material. The pole of a magnet, a current-carrying wire or a moving charged particle in a magnetic field will feel a magnetic force.

4)When two magnets are brought together, the opposite poles will attract one another, but the like poleswill repel one another. This is similar to electric charges. Like charges repel, and unlike charges attract.

5)It has two poles, a north and a south pole such that when suspended freely, the magnet aligns itself so that the northern pole points towards the magnetic north pole of the earth.

6)he magnetic field protects our planet from cosmic radiation and from the charged particles emitted by our Sun

7)A magnetometer is a device that measures magnetic field or magnetic dipole moment. Different types of magnetometers measure the direction, strength, or relative change of a magnetic field at a particular location.

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1: false they do form loops

2: materials like iron and their alloys

3:  when the process is slow

4: the interaction between atomic dipoles that result unpaired electrons in the outer shell

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1. when a magnet is cut in half they will attract each other because they will have both north and south poles.
2. the magnetic field protects life on earth . without the magnetic field the solar wind could render life on earth impossible
3.  earphones and television
4. because its where the earths south magnetic pole is located. North and south attract

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1) when you cut a magnet in half, it forms north and south poles on each half and they become 2 separate magnets.
2) the magnetic field protects the earth from the charged particles coming from the sun.
3) magnets on the fridge, or a compass.
4) the north pole of the compass attracts to the south pole of the earth’s “magnet” and vice versa, which means the “north’ indication of the magnet is attracted to the north pole

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1.When a bar magnet is cut into half both the halves will have a north pole and a south pole each.
2.The magnetic field protects our planet from cosmic radiation and from the charged particles emitted by our Sun. It also provides the basis for navigation with a compass.
3.

Magnets are used in magnetic compass, doorbells, refrigerators.

Magnets are used in dynamos, motors, loudspeakers, microphones etc.

Ceramic magnets are used in computers.

Magnets are used in toys to give a magic effect.

4.. Earth's magnetic north pole is near Earth's geographic south. That's why the north pole of a compass points toward north because that's where Earth's south magnetic pole is located and they attract.

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For the last question, it should be “what direction does a compass point towards?”

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1. The common use for magnets is for navigation.
2. If you cut a magnet in half, it will always have its own  north and south pole.
3. Magnetic domains produce magnetic fields.
4. Like magnetic poles repel each other (south - south and north - north)
5. A bar magnet has 2 poles: north and south.
6. Without a magnetic field, the solar wind would make life on earth impossible.
7. The right hand rule can be used to map a magnetic field.

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1: a region around a magnetic material or a moving electric charge within which the force of magnetismacts

2: a magnet

3:Without the magnetic field around the Earth could not exist on the planet . Solar radiation would strip away our atmosphere.

4: they may be represented by lines of force

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1. When you cut a magnet in half, all the pieces will have their own north and south poles.
2. Without a magnetic field, the solar wind would make life on earth impossible.
3. Navigation is a common use of magnets.
4. A magnetic compass points to the geographic north pole because that is where earths magnetic pole is.

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- Magnetic fields work just like electric fields. The field lines appear to begin at the north pole of the magnet and end at the south pole, but they do not have a starting and ending point, they are all loops.
- Compass.
-  Without a magnetic field, the solar wind would make life on earth impossible
- You represent a magnetic field just like electric fields, with loops and arrows.