Y8 Rotation 1 Physics Magnets

North and south.

• Iron.
• Nickel and cobalt are also magnetic.

Repel.

They repel each other.

They attract.

By stroking a permanent magnet across it.

By disrupting the domains. This can be done by hitting it or by heating it.

Domains.

Randomly.

All lined up with each other.

Field lines.

By wrapping a current carrying wire around a coil.

Picking up things in a junkyard, sorting metals in a factory or recycling plant, and releasing and locking doors.

They can be more powerful and they can be turned on and off.

Bigger current, more coils, or better quality core.

Magnets in the track and train repel each other.

They have reduced friction between the train and the track so they waste less energy and make less noise.

It does not contain domains.