Page 147 - Knowledge Organiser Yr8 24-25

Knowledge Base: Science 8.10 Force Fields Year 8
1. Static Electricity
1.1
What are the two types of charged particles?
Positive and negative particles.
1.2
What is the overall charge of an atom and why?
At atom is neutral because it has an equal number of positive and negative particles.
1.3
Can the positive particles in an atom move?
No, they are fixed in the atom.
1.4
Can the negative particles in an atom more?
Yes, they can be transferred from one place to another.
1.5
What happens if an object loses negative particles?
The overall charge of the object will be positive.
1.6
What happens if an object gains negative particles?
The overall charge of the object will be negative.
3. Magnetic Materials
3.1 What is a permanent magnet? A magnet that is always magnetic.
3.2 What are the magnetic materials? Iron, cobalt, nickel and steel.
4. Poles and Magnetic Fields
4.1
What are the poles of a permanent magnet?
The ends of the magnet called the north pole and south pole.
4.2
What is a magnetic field?
The region around a magnet where magnetic materials experience a force.
4.3
What direction does a magnetic field act in?
From north to south.
4.4
How do we know that a magnetic field is strong?
The field lines are close together.
4.5
What does the magnetic field look like around a permanent bar magnet?
2. Forces and Fields
2.1
What is created around a charged object?
An electric field.
2.2
What is the force that acts between two charged particles?
Electrostatic force
2.3
Is electrostatic force a contact or a non-contact force?
It is a non-contact force.
2.4
What happens when two particles with like charges are near each other?
They will repel.
2.5
What happens when two particles with different charges are near each other?
They will attract.
2.6
Give an example of static electricity.
1. Rubbing a balloon on your hair and it standing on end.
2. Lightening.
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