Science Test Flashcards
Divergent
Ocean to ocean
Feature formed : oceanianc ridge
Where in the world: Atlantic ridge
Humen impact: active volcanos, mines, earthquakes, rare with tsunamis
Sliding boundary
Continent to continent
Feature formed : rift or fault
Where in the world: Sandra’s fault, California, where plates move against each other
Human impact : earthquakes
Convergent
Collision boundary
Continent to continent
Feature formed : mountains (folded)
Where in the world: India, west South America
Human impact : earthquakes
Convergent
Subduction boundary
Ocean to continent
Feature formed : in land active volcanos . Tall mountains, oceanic trenches
Where in the world: between nazaca plate, where land meets water, bc coast, South America
Human impact : volcano eruptions, tsunamis, earthquakes
Convergent
Subduction
Ocean to ocean
Feature formed : active volcanos, trenches, volcano islands
Where in the world: lslands, India, Asia, perchillie trench, Japan, Indonesia
Human impact : earthquakes, trenches
, tsunamis
Inner core
Composition: iron & nickle
Thickness:1250 km
State of matter:solid
Outer core
Composition: iron & nickle
Thickness:2200 km
State of matter:liquid
Upper/lower/ middle mantle
Composition: semi molten rock - magma
Thickness: 2900
State of matter: solid
Crust
Composition: igneous, metamorphic, segnius, solid rock
Thickness: 50km continental- 5 oceanic
State of matter: solid
What is the earths crust made up of?
The layer of solid rock
Underneath the earths crust is?
Molten rock
What is the cores state of matter and temp?
State- solid iron
Temp: 1500 c
Outer core
Molten iron
Mantle
Hot tar - 1200 c
Crust
Thin and cool
Mt St. Helens
Explosive volcano
Erupting whe the first pioneers cam up there
Volcanos can
Re assembly of life
The crust is made of
Tectonic plates floating on the earths mantle (molten metal)
All the plates of the earths crust were one piece called :
Pangea
Where are volcanos formed?
Where tectonic plates are spread apart
Where plates come together
Mountains are where plates come together
Which continent is North America moving away from
Europe
Earthquakes are caused by
Shifting tectonic plates
What is the name of the machine that monitors the earths plates?
Sizemagraph
How thick is the earths core?
2800 k thick
How many layers does the earth have
Three layers - crust, mantle, core
What is the innermost layer and the hottest is..
Core made of iron and nickle
What are the five layers of the earth
- Crust
- Upper mantle
- lower mantle
- Outer core
- Inner core
Alfred Wagner suggested
That all continents once were a supercontinent called Pangea
