Chapter 1

Question 0

lithosphere

Answer 0

means stone or rock

consists of Earth’s crust and top of mantle

Question 1

asthenosphere

Answer 1

hotter softer rock in the upper mantle

below the lithosphere

Question 2

mantle

Answer 2

made of hot rock
thickest layer
top is cool and rigid

Question 3

outer core

Answer 3

made of liquid metals

Question 4

convection

Answer 4

heat energy transfers by the movement of a material

Question 5

convection current

Answer 5

transfers heat energy into a material

Question 6

theory of plate tectonics

Answer 6

Earth’s lithosphere is made of huge plates that move over Earth’s surface

Question 7

sea floor spreading

Answer 7

molten rock rises through cracks, cools and forms new crust. old crust is pulled away

Question 8

ocean trench(evidence)

Answer 8

old crust is sinking into trenches and disappearing

Question 9

rift valley

Answer 9

deep valley formed as tectonic plates move apart

Question 10

hot spot

Answer 10

area where heated rock rises from the mantle

Question 11

subduction

Answer 11

oceanic plate sinks beneath another plate

Question 12

what forms at convergent boundaries?

Answer 12

mountains fold

Question 13

what forms at divergent boundaries

Answer 13

valleys

Question 14

what forms at oceanic oceanic collision

Answer 14

island arcs, volcanic islands

Question 15

what forms at oceanic continental subduction

Answer 15

ocean trench