Plate Tectonicsssss

Question 1

Which time periods of Earth
- 225 Million Years ago
- 200 Million
- 135 Million
- 65 Million

Answer 1

(In same order)
- Permian
- Triassic
- Jurassic
- Cretaceous

Question 2

Who proposed Pangaea

Answer 2

Alfred Wegener

Question 3

Proof of pangaea

Answer 3

1. Continental Fit (Pieces of Jigsaw)
2. Fossil similarity (mesosaurus found)
3. Ice sheets (cover areas that are now too warm for them)

Question 4

Endogenic forces

Answer 4

Forces beneath the earth’s crust

Question 5

Sea floor spreading

Answer 5

Pull away, rocks closest to ridge are youngest, tectonic activity (EQS, VOL, MOU)

Question 6

Convergant Plate boundaries
Continental/
Oceanic

Answer 6

Destructive, Collide, Nazca Plate subducts under SA plate (More dense), melts + new magma, can make VOL, Fold MOU, Ocean trench at subduction zone

Question 7

Convergent Oceanic/
Oceanic

Answer 7

Heavier/denser subducts, melt + new magma, burns through+ volcano, volcanic arc (islands), Japan, trench forms

Question 8

Convergant Continental/
Continental

Answer 8

Similar density, neither subduct, buckle upwards, fold MOU, Alps, Magma intrudes creating new rock

Question 9

Divergent (Constructive)

Answer 9

Pull apart, (Eurasian, N.A), large cracks called fissures, magma rises through + new crust, crust may fracture forming transforms faults + earthquakes, Ridges form (E.g mid Atlantic), sometimes volcanic islands

Question 10

Continental Splitting

Answer 10

Rift valley, magma plumes, African plate, stretch and split, Magma rises through fissures (Kilimanjaro)

Question 11

Transform/
Conservative plate boundary

Answer 11

Pass eachother or in same direction at different speeds, get stuck+pressure, released + jolt causing quake, released in seismic 🌊

Question 12

Case study: Iceland, what is geothermal energy

Answer 12

Geothermal energy, thermal energy in earths crust, combined with ⚡ from formation of 🌍 and radioactive decay, heats up generator causing turbine to spin making ⚡💥✨🏳️‍🌈

Question 13

Iceland’s energy breakup

Answer 13

100% renewable
- 27% Geothermal

Question 14

Benefits to Geothermal

Answer 14

Renewable, lowers cost and dependency on others, never runs out, employment, silent, safe, reliable

Question 15

Disadvantages of geothermal

Answer 15

Location restricted(needs geothermal springs), releases greenhouse gases (not as bad), expensive to set up