eighth paper

Question 1

a collision of water drops creates a charge _____

Answer 1

seperation

Question 2

negative charge at the bottom of the cloud induces a

Answer 2

positive charge at the surface of the ground

Question 3

when electrical charges flow through ionized air what is created?

Answer 3

a lightning strike

Question 4

potential difference between clouds and earth is several million ____

Answer 4

volts

Question 5

what is a dipole field?

Answer 5

a field created with multiple electrical charges

Question 6

what is a monopole field?

Answer 6

a field with only one electrical charge which actually cannot exist

Question 7

if you break a magnetic you get…
you dont get…

Answer 7

2 smaller magnets each with a N and S pole
2 individual N and S poles

Question 8

when is a magnetic field produced?

Answer 8

whenever a current flows

Question 9

magnetic fields do/do not point radially

Answer 9

do not

Question 10

electric fields do/do not point radially

Answer 10

do

Question 11

a magnetic field can be represented by…

Answer 11

field lines

Question 12

where do magnetic properties concentrate in magnets?

Answer 12

in the ends/poles

Question 13

what is the source of magnetic fields?

Answer 13

since electrons are charges in motion, they produce magnetic fields

Question 14

in most materials magnetic fields…

Answer 14

cancel each other out (neutralize)

Question 15

in materials like iron and cobalt what happens in the magnetic field?

Answer 15

electrons are oriented in such a way to impart magnetic properties to the atomic structure.

Question 16

what is the magnetic domain?

Answer 16

where the atoms are grouped in the magnetic field

Question 17

the earths magnetic filed is thought to originate because of…

Answer 17

our iron/nickel core

Question 18

the magnetic axis is tilted ___ degrees from the earths axis of rotation

Answer 18

12

Question 19

what does a moving electric charge produce in the space around it?

Answer 19

a magnetic field

Question 20

a single charged particle creates a magnetic field only when its _____

Answer 20

moving

Question 21

a magnetic compass shows the presence and direction of a _____ _____ around a straight length of _____

Answer 21

magnetic field
current

Question 22

a magnetic field exerts a ____ on a moving ____ ____ while a stationary ____ _____ does not experience a _____ in a magnetic field

Answer 22

force
electric charge
electric charge
force

Question 23

what is electromagnetic induction?

Answer 23

changing magnetic fields produces an electric field in the space around it

Question 24

what are generators?

Answer 24

an axle with many wire loops that rotate in a magnetic field. The axle is turned by some form of mechanical energy such as a steam engine.

Question 25

plasma follows _____ _____ _____

Answer 25

magnetic field lines

Question 26

what are coronal loops?

Answer 26

filamentary structures created by hot glowing plasma flowing along magnetic field lines

Question 27

does the earth have its own magnetic field?

Answer 27

yes

Question 28

how often does earths magnetic field flip?

Answer 28

every few hundred thousand years

Question 29

what is the earths manetosphere?

Answer 29

the earths shield from solar wind

Question 30

what does solar wind distort?

Answer 30

Magnetic fields

Question 31

what is solar wind created from?

Answer 31

protons, electrons, and He nuclei expelled by flares

Question 32

how often does aurora show most activity?

Answer 32

every 11 years

Question 33

where is the aurora?

Answer 33

in the ionosphere

Question 34

what planets see the aurora?

Answer 34

earth, jupiter, and saturn