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Flashcards in Ch 14 Deck (22)
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1

What 2 things are always found together

Electricity and magnetism

2

No orginazation

Appears no magnetic but actually is

3

All electrons have

Electrical poles

4

Name 3 elements and what is special ab them

Iron
Oxygen
Nickle
The outermost electrons for these elements can be aligned magnetically and you can see the magnetic field

5

What is special about the earth core

It is made of iron and it is the only planet like this

6

Load stone magnetite

Rocks with iron in it

7

Domain

Group of atoms lined up together could be thousands and thousands

8

Random domains vs organized domain

Random domains appear to be nonmagnetic organize domains appeared to be magnetic

9

Magnetism by induction

Giving magnetic ness to something non-magnetic by organizing it's domains

10

Earth is on ____ angle

23°

11

The earth spins on

Geographic north and south poles and they are constant

12

Magnetic field lines meet at

Magnetic north and south poles these are different from the geographic poles

13

Solar wind

Particles at high speed

14

Angle of declination

Difference in degrees between the true North and geographic north

15

Mars once had

Magnetic field

16

Explain how scientists use ancient clay pots for magnetism

When the Clay is done heating and is cooling it holds the magnetism of wart like microscopic compass needles

17

Cycle of magnetism

Magnetic field, motion, currents

18

MRI

Magnetic resonance imaging for soft tissue

19

Electromagnet

Run electricity through a coil of wire and it creates a strong magnetic field

20

Source of all magnetism

Electric charges

21

Explain the three ways to demagnetize something

Demagnetizing is randomizing the domains
Heat; if you heat magnets for heat makes atoms excited and the electrons go into outer orbit and randomize
Force; if you hit it the shockwave moving through metal will randomize domain
Another magnetic field; if there are two magnetic fields working against each other they will randomize each other's domains

22

Electrons

Revolutions rotating & spinning