Physical Science Chapter 11

Front 1

Magnetic forces

Back 1

North and south

A north pole never exists without a south

Front 2

Rules of magnetic forces

Back 2

Like repel, opposite attract

Front 3

Magnetic field

Back 3

The space around a magnetic pole or a moving charged particle

Front 4

Forces of a magnetic field always drawn from

Back 4

North to south

Front 5

Magnetic field made up of

Back 5

A single moving charge or a current of charges

Front 6

Magnetic domain

Back 6

Cluster of aligned atoms that a magnet contains

Front 7

Magnetic domain will be more aligned in a

Back 7

Strongly magnetized object

Front 8

Electromagnet

Back 8

Magnet whose field is produced by an electric current

Front 9

Moving charges

Back 9

Exert a force perpendicular to the magnetic field lines and velocity of a charged particle

Front 10

Force of moving charges strongest as

Back 10

particles are perpendicular to magnetic field

Front 11

Forces of moving charges weakest as

Back 11

particles become more parallel to field lines

Front 12

Galvanometer

Back 12

Current indicating instrument

Front 13

Anmeter

Back 13

Measures current

Front 14

Voltmeter

Back 14

Measures voltage

Front 15

Motor

Back 15

Converts electrical energy into mechanical energy by rotating a magnetic field with a current carrying coil

Front 16

Electromagnetic induction

Back 16

Inducing voltage by changing the magnetic field in a coil of wire

Front 17

Faradays law formula

Back 17

Induced voltage=loops•[change in magnetic field÷time]

Front 18

Faradays law

Back 18

An electric field is induced in any region of space in which a magnetic field is changing with time

Front 19

James Maxwell Clark

Back 19

1)A magnetic field is induced in any region of space in which and electric field is changing with time

2) discovered that light is electromagnetic waves in a range of frequencies visible to the eye

Front 20

Generator

Back 20

Converts mechanical energy into electrical energy by rotating a coil within a stationary magnetic field

Front 21

What 2 ways do electrons move?

Back 21

Electron spin and electron revolution

Front 22

Magnetic force depends on velocity of

Back 22

The charge relative to the magnetic field

Front 23

What is a stationary electric charge surrounded by?

Back 23

An electric field

Front 24

What is a moving electric charge surrounded by?

Back 24

An electric field and a magnetic field

Front 25

The rapid alternation of a magnetic field is induced by

Back 25

An electric field

Front 26

The rapid alternation of an electric field is induced by

Back 26

A magnetic field

Front 27

The energy input to a turbine is most commonly

Back 27

Falling water or steam

Front 28

A generator produces ___ energy with ___ energy

Back 28

Electrical

Mechanical

Front 29

A motor produces ___ energy with ___ energy

Back 29

Mechanical

Electrical

Front 30

3 ways voltage can be induced

Back 30

1) moving a loop of wire near a magnet

2) moving a magnet near a loop of wire

3) changing the current in a wire

Front 31

For electromagnetic induction to occur, what must change?

Back 31

Strength of magnetic field

Front 32

Maximum deflecting force

Back 32

Charged particle moves perpendicular to magnetic field lines

Front 33

What shape are magnetic field lines about a current carrying wire?

Back 33

Pattern of concentric circles

Front 34

A magnetic force acting on a beam of electrons can change its

Back 34

Direction

Front 35

Voltage will be induced in a wire loop when the magnetic field within the loop

Back 35

Changes

Front 36

An electric field is induced in any region of space in which

Back 36

A magnetic field changes with time

Front 37

Electricity and magnetism connect to form

Back 37

Light