Notes K

Question 0

Mid ocean ridges form longs chains of blank that rose from the ocean floor

Answer 0

Mountains

Question 1

When did Pangea form

Answer 1

300 million years ago

Question 2

Most blank lie under thousands of meters of water

Answer 2

Mid ocean ridges

Question 3

Steep sided valleys split the top of most blank

Answer 3

Mid ocean ridges

Question 4

Mid ocean ridges form along a crack in

Answer 4

Oceanic crust

Question 5

During sea floor spreading older strips of rock move

Answer 5

Outward

Question 6

Eventually the ocean flood plunges into

Answer 6

Deep underwater canyons

Question 7

At a deep ocean trench oceanic crust bends

Answer 7

Downward

Question 8

As the crust cools it becomes more

Answer 8

Dense

Question 9

Old crust =

New crust =

Answer 9

Cold

Hot

Question 10

The dense crust might collide with a

Answer 10

Contenent

Question 11

Seaflooeing spreading and blank move the ocean floor like a conveyer belt

Answer 11

Subduction

Question 12

Gravity pulls the blank crust beneath the trench and back into the mantle

Answer 12

Denser

Question 13

Many trenches=

Few trenches =

Answer 13

Shrink

Grow

Question 14

Earths blank move because they are the top part of the large convection currents in earths mantle

Answer 14

Plates

Question 15

Faults form along

Answer 15

Plate boundaries

Question 16

Diverge makes

Answer 16

Rift valleys

Question 17

The density of the blank decides which is on top

Answer 17

Crust

Question 18

More dense =

Answer 18

Sinks

Question 19

Convergent boundary forms

Answer 19

Volcano

Question 20

Transform boundary forms

Answer 20

Earthquakes