Earth's magnetic field review guide

Universe

the totality of known or supposed objects and phenomena throughout space; the cosmos; macrocosm.

Earth

the planet on which we live; the world.

Sun

the star around which the earth orbits.

Milky way Galaxy

a spiral system consisting of several hundred billion stars, one of which is the Sun

Solar System

arge spiral system consisting of several hundred billion stars, one of which is the Sun

Solar Neighborhood

the region surrounding our Sun, including stars that were formed from the same galactic material

Magnetosphere

the region surrounding the earth or another astronomical body in which its magnetic field is the predominant effective magnetic field

Non Contact Force

a force which acts on an object without coming physically in contact with it

Magnet

piece of iron

Dipolar

a pair of equal and oppositely charged or magnetized poles separated by a distance

Magnetism

a physical phenomenon produced by the motion of electric charge, resulting in attractive and repulsive forces between objects

Magnetic field lines

a visual tool used to represent magnetic fields

Iron filings

a fragment of iron rubbed off by the use of a file

Electromagnet

a soft metal core made into a magnet by the passage of electric current through a coil surrounding it

Electric current

the flow of electricity in an electronic circuit, and to the amount of electricity flowing through a circuit

Electromagnetic

a soft metal core made into a magnet by the passage of electric current through a coil surrounding it