unit 5 - seasons & magnetic fields

still hate science

What does the tilted axis of earth cause?

Different seasons!

Northern Hemisphere order

March: spring, June: Summer, September: Autumn, December: Winter

Southern Hemisphere order

March: Autumn, June: Winter, September: Spring, December: Summer

Magnetic fields

Caused by electric charges

negative side & negative side = ?

repel (negative)

positive side & positive side = ?

repel (positive)

negative & positive side = ?

attract!

Permanent magnets

Retain magnetism w/o needing external magnetic field

Temporary magnet

Loses magnetism when external magnetic field is removed

Electromagnet

Created by passing electricl current through coil of wire

Natural magnet

Naturally occurring magnets

Strong magnetic field = ?

Greater current, greater # of coils, & bolt prescence

What is magnetic fields have to do with transportation?

It’s used for magnetic leviation, allowing trains to levitate and move along a guideway by using strong magnets