Podcast
Questions and Answers
What type of force is magnetism?
What type of force is magnetism?
- Contact force
- Non-contact force (correct)
Which of the following materials can be attracted by a magnet but do not generate magnetic forces?
Which of the following materials can be attracted by a magnet but do not generate magnetic forces?
- Cobalt
- Gold (correct)
- Iron
- Paper (correct)
- Nickel
- Platinum
Which of the following factors are associated with forces?
Which of the following factors are associated with forces?
- Color
- Direction (correct)
- Magnitude (correct)
- Shape
What is the unit used to describe forces?
What is the unit used to describe forces?
Which of the following are examples of non-contact forces?
Which of the following are examples of non-contact forces?
What are magnets?
What are magnets?
What can magnets push or pull on?
What can magnets push or pull on?
What are neodymium magnets?
What are neodymium magnets?
What are magnetic materials?
What are magnetic materials?
What is an alloy?
What is an alloy?
All magnets have a south pole and a north pole.
All magnets have a south pole and a north pole.
What is the difference between a permanent magnet and a bar magnet?
What is the difference between a permanent magnet and a bar magnet?
What happens when like poles of two magnets are held together?
What happens when like poles of two magnets are held together?
What happens when opposite poles of two magnets are held together?
What happens when opposite poles of two magnets are held together?
What is magnetisation?
What is magnetisation?
Which of the following best defines the term 'magnet'?
Which of the following best defines the term 'magnet'?
What will happen when two magnets are brought together, with a north pole facing a south pole?
What will happen when two magnets are brought together, with a north pole facing a south pole?
What will happen when two magnets are brought together, with a south pole facing another south pole?
What will happen when two magnets are brought together, with a south pole facing another south pole?
What will happen when two magnets are brought together, with a north pole from one magnet facing a north pole from the other?
What will happen when two magnets are brought together, with a north pole from one magnet facing a north pole from the other?
What is the rule for magnets attracting and repelling?
What is the rule for magnets attracting and repelling?
Why does a magnet hanging on a thread respond to magnetic forces more easily than a magnet laying on a bench?
Why does a magnet hanging on a thread respond to magnetic forces more easily than a magnet laying on a bench?
What would be a better explanation of the behavior of magnets than 'magnets stick together'?
What would be a better explanation of the behavior of magnets than 'magnets stick together'?
Give an example of a contact force and a non-contact force.
Give an example of a contact force and a non-contact force.
Flashcards
Force
Force
A force is a push or pull applied to one object by another.
Force Magnitude
Force Magnitude
The strength of a force is known as its magnitude.
Force Direction
Force Direction
The direction a force acts in.
Non-contact force
Non-contact force
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Contact force
Contact force
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Newton (N)
Newton (N)
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Magnetic Material
Magnetic Material
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Magnet
Magnet
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Alloy
Alloy
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Magnetization
Magnetization
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Magnetic Pole
Magnetic Pole
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North Pole (N)
North Pole (N)
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South Pole (S)
South Pole (S)
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Repel
Repel
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Attract
Attract
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Study Notes
Magnetism
- Magnetism is a force, a push or pull, that affects objects without touching them.
- This is called a non-contact force.
- Many everyday items use magnetism, from computers to cars.
- Magnetism is a force measured in newtons (N).
- The stronger the force, the higher the number of newtons.
- Magnets have a north and south pole.
Learning Objectives
- Understanding magnetic attraction and repulsion.
- Applying the concept of poles and the laws of attraction and repulsion.
- Predicting magnetic pole effects.
Force
- A force is a push or pull applied to an object by another object.
- Forces have magnitude (size) and direction.
- Forces are represented by arrows; the length of the arrow shows the force's magnitude, and the direction the arrow points shows the direction of the force.
- The unit for measuring force is the newton (N).
Magnetism as a Non-Contact Force
- Magnets exert forces on objects without touching them.
- This is an example of a non-contact force.
Magnetic Materials
- Certain materials (e.g., iron, nickel, cobalt) are attracted to magnets.
- These are called magnetic materials.
- These materials can be attracted to a magnet, but they do not generate magnetic forces themselves.
- An alloy is a combination of metals, and some alloys of iron, nickel, and cobalt are also magnetic.
Permanent Magnets
- Permanent magnets retain their magnetic force.
- Like poles of magnets repel each other.
- Unlike poles of magnets attract each other.
3-Minute Task
- Recall: Magnetism is a non-contact force.
- Magnetism vs other material: Identify materials that can be attracted by a magnet but do not create their own magnetic field.
- Force factors: Identify features associated with forces (magnitude, direction, shape, color).
- Units of force: The unit of force is the newton (N)
- Examples of non-contact forces: magnetism, gravity.
Homework
- Describe how magnets attract and repel.
- Describe what happens when a magnet approaches other types of materials (iron, copper).
- Explain why a hanging magnet responds to magnetic forces more easily than a magnet laying on a surface.
Contact vs Non-Contact Forces
- Contact forces require physical touch between objects (like pushing a box).
- Non-contact forces affect objects without touching them (like gravity or magnetism).
Earth's Gravitational & Magnetic Forces
- Explain similarities and differences between Earth's gravity and magnetism.
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