Earths Forces Test Review

Question 1

what is the theory of continental drift?

Answer 1

the theory that continents were once conjoined together in one big super continent called Pangea but then they drifted apart

Question 2

what is the part of earth that the tectonic plates move on?

Answer 2

asthenosphere

Question 3

what are the pieces of the lithosphere that move around on top of the asthenosphere

Answer 3

tectonic plates

Question 4

how did the continents drift apart

Answer 4

convection currents, tectonic plates, continental drift and they just drifted

Question 5

what do most scientists believe causes earths plates to move

Answer 5

convection currents

Question 6

what fill the gap as the seafloor spreads

Answer 6

magma

Question 7

what is subduction

Answer 7

when one plates slips under another

Question 8

describe a divergent plate boundary

Answer 8

when plates move away from each other

Question 9

describe a convergent plate boundary

Answer 9

when plates collides together

Question 10

describe a transform boundary

Answer 10

two plates slide past each other in opposite directions

Question 11

how does tension affect a rock

Answer 11

pulls on a rock making the middle weaker and thinner

Question 12

how does compression affect rock

Answer 12

squeezes rock until it breaks

Question 13

how does shearing affect rock

Answer 13

pushes rock in opposite directions

Question 14

what does stress add to the rock

Answer 14

adds energy to the rock

Question 15

what type of stress produces reverse faults

Answer 15

compression

Question 16

what type of stress produces normal faults

Answer 16

tension

Question 17

what type of stress produces strike slip fault

Answer 17

shearing

Question 18

describe a normal fault

Answer 18

plates are pulled apart at divergent plate boundaries

Question 19

describe a reverse fault

Answer 19

plates are being pulled apart at convention plate boundaries

Question 20

describe a strike slip fault

Answer 20

plates slide past each other at the transform boundary

Question 21

in normal fault the part of the fault that lies below the other part is called what

Answer 21

the foot wall

Question 22

describe p waves and how they move

Answer 22

1st to arrive travels through solid and liquid carries energy away from focus through interior

Question 23

describe s waves and how they move

Answer 23

2nd to arrive vibrant side to side up and down