Ch 14

Question 1

What 2 things are always found together

Answer 1

Electricity and magnetism

Question 2

No orginazation

Answer 2

Appears no magnetic but actually is

Question 3

All electrons have

Answer 3

Electrical poles

Question 4

Name 3 elements and what is special ab them

Answer 4

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

Question 5

What is special about the earth core

Answer 5

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

Question 6

Load stone magnetite

Answer 6

Rocks with iron in it

Question 7

Domain

Answer 7

Group of atoms lined up together could be thousands and thousands

Question 8

Random domains vs organized domain

Answer 8

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

Question 9

Magnetism by induction

Answer 9

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

Question 10

Earth is on ____ angle

Answer 10

23°

Question 11

The earth spins on

Answer 11

Geographic north and south poles and they are constant

Question 12

Magnetic field lines meet at

Answer 12

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

Question 13

Solar wind

Answer 13

Particles at high speed

Question 14

Angle of declination

Answer 14

Difference in degrees between the true North and geographic north

Question 15

Mars once had

Answer 15

Magnetic field

Question 16

Explain how scientists use ancient clay pots for magnetism

Answer 16

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

Question 17

Cycle of magnetism

Answer 17

Magnetic field, motion, currents

Question 18

MRI

Answer 18

Magnetic resonance imaging for soft tissue

Question 19

Electromagnet

Answer 19

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

Question 20

Source of all magnetism

Answer 20

Electric charges

Question 21

Explain the three ways to demagnetize something

Answer 21

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

Question 22

Electrons

Answer 22

Revolutions rotating & spinning