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Flashcards in Ch 14 Deck (22)
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1
Q

What 2 things are always found together

A

Electricity and magnetism

2
Q

No orginazation

A

Appears no magnetic but actually is

3
Q

All electrons have

A

Electrical poles

4
Q

Name 3 elements and what is special ab them

A

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

5
Q

What is special about the earth core

A

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

6
Q

Load stone magnetite

A

Rocks with iron in it

7
Q

Domain

A

Group of atoms lined up together could be thousands and thousands

8
Q

Random domains vs organized domain

A

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

9
Q

Magnetism by induction

A

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

10
Q

Earth is on ____ angle

A

23°

11
Q

The earth spins on

A

Geographic north and south poles and they are constant

12
Q

Magnetic field lines meet at

A

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

13
Q

Solar wind

A

Particles at high speed

14
Q

Angle of declination

A

Difference in degrees between the true North and geographic north

15
Q

Mars once had

A

Magnetic field

16
Q

Explain how scientists use ancient clay pots for magnetism

A

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

17
Q

Cycle of magnetism

A

Magnetic field, motion, currents

18
Q

MRI

A

Magnetic resonance imaging for soft tissue

19
Q

Electromagnet

A

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

20
Q

Source of all magnetism

A

Electric charges

21
Q

Explain the three ways to demagnetize something

A

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
Q

Electrons

A

Revolutions rotating & spinning