Primary Leap Flashcards
What is Kerguelen plateau?
A microcontinent submerged under the Indian ocean
What % of off shore oil production if from Indian ocean?
40%
What was the supercontinent called?
Gondwana
What is the name of the ridge that separates the Indian ocean into east and west?
Ninety east ridge
Why is Indian ocean called a closed ocean?
Because it is surrounded by land
What % of all oceans in the Indian ocean?
14%
What are phytoplanktons?
Microscopic marine algae providing food to many sea animals
What do you call someone who studies rocks?
Geologist
How are igneous rocks formed?
From molten lava, magma
How are sedimentary rocks formed?
When sediments like sand and mineral stick together
What is a metamorphic rock?
when heat and pressure affect igneous and sedimentary rocks, they change (metamorphose) into a metamorphic rock.
Whay are the 2 types of igneous rocks?
Intrusive and extrusive
Example of intrusive igneous rock
Granite
Example of extrusive igneous rock
Basalt
Give an example of a metamorphic rock
Marble