Y9 Physics - Magnetism

Where do compass needles point

North

What is the end that is pointing north called

North seeking pole

What is the end that is pointing south called

South seeking pole

What colour is the north seeking pole traditionally painted

Red

What happens if you separate a permanent magnet in two

The seperate magnets have N and S poles attached to themselves

What happens when N and S magnetic fields react

Attraction

What happens when N and N or S and S magnetic fields react

Repulsion

What happens when a magnet and a nail inside that magmet’s magnetic field react?

Attraction, as a nail is an induced magnet

Define induced magnet

A magnet where the domains are all jumbled up, and they adjust when a permanent magnetic field is nearby

Define permanent magnet

A magnet where all domains are lined up neatly and the magnetic field always exists

How many magnetic elements are in the periodic table

3

Name the magnetic elements in the periodic table

Iron, Cobalt, Nickel

What happens to unlike poles

They attract

What happens to like poles

They repel

What happens when an induced magnet comes in the presence of a permanent magnetic field

The domains line up and they attract

Can energy be created or destroyed

No it can only be transferred

To which pole of the Earth would the north seeking pole of a magnetic compass face

The north pole

To which pole of the Earth would the south seeking pole of a magnetic compass face

The south pole

Where is Earth’s magnetic south?

South pole

Where is Earth’s magnetic north?

North pole

What does the Earth’s magnetic field look like?

The same as that of a bar magnet, just way bigger

Where is the force of a magnetic field greater?

Where the lines are closer together

What can you use to draw a magnetic field

Magnetic compass

What happens with magnetic compass needles to make sure they align with Earth’s magnetic field

They will be pushed and pulled so that they align

What is the right hand grip rule

Thumb - faces current, fingers - field direction

What happens to the magnetic field of a wire if the current stops flowing

The magnetic field stops existing

What is the shape of the magnetic field of a coiled wire

Same as that of a bar magnet

Systematic error

Error which affects data in a predictable way

Random error

Error which affects data in a predictable way

Define polarity

Having two opposite poles or charges