Show:
Subuction
Volcanoes
Igneous Rocks
The Rock Cycle
Plate Tectonics
100
What is subduction?
The process when one tectonic plate pushes down under another one.
100
Name all four types of volcanoes
Cinder Cones, Composite Volcanoes, Sheild volcanoes, and Lava Domes
100
Name the two main types of igneous rocks. (make sure to give both names)
Intrusive or plutonic and extrusive or volcanic.
100
What are all three rocks in the rock cycle.
Igneous rocks, sedimentary rocks, and metamorphic rocks.
100
What are the plate tectonics?
A theory that states there are seven major plates and many minor ones.
200
When the jerky movement and friction between the two plates causes heat, does the heat melt the subducted plate?
No.
200
What type of volcano is the largest of the four?
Shield Volcanoes.
200
How can you tell the diference between igneous rocks and the other two.
You look at the texture and structure.
200
Which type of rock starts the rock cycle? Metamorphic, igneous, or sedimentary?
NONE! There is no begining and no end.
200
What happens when two plates colide and scrape across each other?
Earthquakes
300
The heat could melt areas of the crust. What forms in these melted areas?
Volcanoes.
300
When lava flows, can lahars wipe out mountains?
Yes.
300
Does an igneous rock need to cool for a long period of time or a short period of time to form large crystals?
A long period of time.
300
Which kind of rock can turn into sedimentary rocks? Igneous or metamorphic?
Both.
300
Whch layer of the earth do the plate tectonic slide across?
The mantle.
400
What kind of movement does the plate move in.
Jerks.
400
What kind of volcanoes are the shortest?
Lava domes.
400
Why are igneous rocks also called fire rocks?
They are formed from lava which is a form of fire.
400
When mountains made of metamorphic rock breaks away, what kind of rock does it turn into?
Sedimentary rocks.
400
The movements of the plates causes stress in the earth's crust. Name three of the six things the stress causes.
Mountains, trenches, mid ocean ridges, rifts, and ocean basins.
500
What is this process also known as?
The process in which rocks break down.
500
What are volcanoes formed from?
Plate tectonics.
500
Why do geologists believe that the earth was once made of nothing bu igneous rocks?
Because they take billions of years to form.
500
How can a sedimentary rock and metamorphic rocks turn into igneous rocks?
They get melted down by magma and lava and turn into manga or lava. Then they cool and form igneous rock.
500
About how many centimeters do the plate tectonics move a year?
About 5.