Plate Tectonics

Question 1

what are the differences between the inner core and the outer core?

Answer 1

inner- solid layer

outer- very hot liquid

Question 2

describe the lithosphere

Answer 2

crust in the upper part of the mantle

Question 3

describe the movement of heat transfer inside the earth

Answer 3

Heat from core starts a convection current that moves the plate tectonics and it’s a convection from heat from the core

Question 4

what would happen to the flow of hot rock in the earths mantle if the planets core eventually cooled down?
how could this affect plate tectonics?

Answer 4

The flow, movement of plate tectonics, earthquakes, and volcanoes would stop

Question 5

what is the theory of plate tectonics

Answer 5

pieces of the earths lithosphere are in constant slow motion driven by convection currents in the mantle

Question 6

what is a mid ocean ridge and where can you find the oldest rock there?

Answer 6

mid ocean ridge- underwater mountain range formed by plate tectonics

furthest rock from ridge

Question 7

what is subduction and what feature does it create

Answer 7

subduction- thin dense oceanic plate collided with light thick continental plate, oceanic plate is forced under continental plate
feature- volcanoes, tsunamis, earthquakes

Question 8

what is a hot spot

Answer 8

intensely hot area in the mantle

below the earths crust that are stationary

Question 9

what is a Rift Valley and where can we find one today

Answer 9

Rift Valley- a deep valley that forms when two plates pull apart
find one- Great Rift Valley in Africa

Question 10

what are the three types of plate boundaries and how do the

plates move

Answer 10

divergent- two plates move apart
convergent- two continents come together or converge
transform- two plates slip past each other and move in opposite directions

Question 11

what are the three types of convergent plate boundaries

Answer 11

• oceanic- oceanic
• continental- continental
• oceanic- continental

Question 12

what features do these three types of plate boundaries create

Answer 12

divergent- igneous rocks form
transform- earthquakes
convergent- volcanoes

Question 13

what is the super continent called that broke up 65 million years
ago

Answer 13

Pangaea

Question 14

three pieces of evidence to support Pangaea

Answer 14

• shapes of continents fit together like a puzzle
• identical rocks have been found on different continents
• fossils of the same kinds of dinosaurs have been found

Question 15

have the continents been together before and how many times

Answer 15

yes and 3

Question 16

where is the longest mountain chain in the world and how is it formed

Answer 16

South America (Andes) and subduction

Question 17

Himalaya Mountains

Answer 17

Nepal and convergent

Question 18

San Andreas Fault

Answer 18

California and transform

Question 19

mid Atlantic ridge

Answer 19

Atlantic Ocean and divergent

Question 20

Mariana Trench

Answer 20

Hawaii and convergent

Question 21

East African Rift Valley

Answer 21

Africa and divergent

Question 22

Andes mountains

Answer 22

South America and convergent

Question 23

Name the layers of the earth from outermost to innermost

Answer 23

crust, mantle, core