constructive plate boundaries

Question 1

oceanic and oceanic

Answer 1

• magama rises in between the gap left by the two plates separating forming new land when it cools
• less explosive underwater volcanoes formed as magma rises
• new land forming on the ocean floor by lava filling the gaps is known as sea floor spreading

Question 2

what is meant by sea floor spreading?

Answer 2

new land forming on the ocean floor by lava filling the gaps

Question 3

continental to continental

Answer 3

• any land in the middle of the separation is forced apart- causing a Rift Valley
• volcanoes form where the magma rises
• eventually the gap will most likely fill with water and separate completely from the main island

Question 4

what are the further forces influencing how convergent boundaries occur?

Answer 4

ridge push, slap pull

Question 5

what is ridge push

Answer 5

slope created when plates move apart has gravity acting upon it - as it at a higher elevation - gravity pushes the skates further away - widening gap

Question 6

what is gravitational sliding /

Answer 6

MOVEMENT INFLUENCED BY GRAVITY

Question 7

what is slap pull?

Answer 7

when a plate subjects - the plate sinking into the mantel pulls the rest of the plate (slab) with it - causing further subduction