Magnets

Question 0

What is a magnet

Answer 0

Anything that attracts iron and materials that contain

Question 1

What is magnetism

Answer 1

The attraction or repulsion of a magnet

Question 2

What does Fe mean

Answer 2

Iron

Question 3

When all of the domains are lined up the object becomes____

Answer 3

Magnetized

Question 4

Magnets have two ends. Each one is called ____

Answer 4

Magnetic poles

Question 5

One end if the magnet always points ____ and the other end points ____

Answer 5

North

South

Question 6

Opposites ____ likes____

Answer 6

Attract

Repel

Question 7

What are the steps to sea floor soreading

Answer 7

Ocean floor rock is formed by molten material that seeps through a crack in the ocean floor. The magnetic material in the molten rock lined up with the direction of earths magnetic field. When the rock cools it creates a permanent record of magnetic field.

Question 8

What is a deep ocean trench

Answer 8

Deep under water canyon that forms where oceanic crust bends and subduction takes place here

Question 9

What is the evidence for sea floor spreading

Answer 9

Molten material
Magnetic stripes
Drilling samples

Question 10

What is subduction

Answer 10

Process by which oceanic crust sinking beneath trench into the mantel.

Question 11

Where does sea floor speeding begin

Answer 11

Mid ocean ridges

Question 12

What is the magnetosphere caused by

Answer 12

Solar wind

Question 13

What is an aurora

Answer 13

A glowing movement in the atmosphere caused by charged particles from the sun

Question 14

True or false

Earths magnetic field has completely moved direction every millions of years or so

Answer 14

True

Question 15

What is a compass

Answer 15

A device that has a magnetized needle that spins freely

Question 16

The angle between a line to the geographic North Pole and the north to which a compass points is known as what

Answer 16

Magnetic declination

Question 17

What is magnetic declination depend on

Answer 17

Your location

Question 18

What produces magnetic fields

Answer 18

The spinning electrons

Question 19

Where is the magnetic force of a magnet the strongest

Answer 19

At its poles

Question 20

Permanent magnets keep there what for a long time

Answer 20

Magnetism

Question 21

Do magnetic field lines cross

Answer 21

No

Question 22

What charge does and electron have

Answer 22

Negative charge

Question 23

True or false

Ferromagnetic materials show strong magnetic propertys

Answer 23

True

Question 24

Two south poles are brought near each other.

              Repel or attract

Answer 24

Repel

Question 25

A North Pole and a South Pole are brought near each other

              Repel or attract

Answer 25

Attract

Question 26

Two north poles are brought be reach other

Answer 26

Repel

Question 27

A South Pole is brought near a North Pole

              Repel or attract

Answer 27

Attract

Question 28

The region of magnetic force around a magnet is known as its

Answer 28

Magnetic field

Question 29

Be able to draw a magnetic field around a magnet

Answer 29

http://images.tutorvista.com/content/magnetic-effects-electric-current/bar-magnet-magnetic-field.jpeg

Question 30

When the magnetic fields of two or more magnets overlap what is the result

Answer 30

Combined field