plate tectonics

Question 1

what is ocean bathymetry?

Answer 1

mapping of sea floor

Question 2

how does sea floor topography work?

Answer 2

• magnetic bands line up either side of ridges

- bands are symmetrical = rocks formed at the same time

Question 3

what is continent convergence?

Answer 3

ocean crust hits continental

oceanic subducts into the earth’s interior

Question 4

what happens in ocean convergence?

Answer 4

ocean crust collides with ocean crust

Question 5

what is produced from continent-continent convergence?

Answer 5

young mountain ranges >200 y/o at convergent plate boundaries eg Himalayas, Rockies

Question 6

how much did surface elevation increase by during the collision of continental plates?

Answer 6

15-20%

Question 7

are rocks older at passive margins?

Answer 7

yes

Question 8

what does mantle convection drive?

Answer 8

surface movement

Question 9

what % does the ocean salinity need to rise to be danger to life?

Answer 9

6

Question 10

what does the removal of CH4 from the atm cause?

Answer 10

glaciation

Question 11

when is the next Pangaea estimated?

Answer 11

250 mil years

Question 12

what does the earth’s mantle do?

Answer 12

convects plumes of hot material up

Question 13

what is daisy world?q

Answer 13

the daisies change the albedo on the planet and regulate temp
they are black and white
if no daisies it would be a brighter not a planet