The Scientific Method/Properties of Earth
Plate Tectonics
Earthquakes
Volcanoes
Rocks and Minerals
100
What is the Equator?
An imaginary line dividing the Earth into Northern and Southern Hemispheres
100
About how many years ago did the Supercontinent start to separate?
200 million years ago
100
Earthquakes of what magnitude occur most often?
2.1 magnitude
100
What volcano erupts mostly pyroclasts?
Composite volcano
100
What do clastic sedimentary rocks contain?
Rock fragments
200
What day does the Summer Solstice start?
June 21st
200
What is seafloor spreading?
The formation of new seafloor and the movement of older seafloor outward
200
What is the Ring of Fire?
The nickname of the region bordering the Pacific Ocean where 80% of all earthquakes occur on Earth
200
The volcano Kilauea is what type of volcano?
Shield volcano
200
What is stratification?
Forms in layers
300
What day does the Winter Solstice start?
December 21st
300
What are mid-ocean ridges?
Features which form at the center of seafloor spreading regions
300
How can you predict earthquakes?
Movements or changes in elevation and changes in the water table
300
What is a conduit?
A tube where magma rises through a volcano
300
What are Extrusive igneous rocks?
Rocks that form above ground
400
What day does the Autumnal Equinox start?
September 22nd
400
What ocean is currently growing in size due to seafloor spreading?
Atlantic Ocean
400
What is a Hypocenter (Focus)?
The point underground where the stress is released along the fault and seismic waves are created.
400
What are the two types of mafic lava?
Pahoehoe and AA
400
Explain the process forming metamorphic rocks
Intense heat and pressure underground morphs the rock
500
What day does the Vernal Equinox start?
March 20th
500
What forms trenches and volcanic islands?
Oceanic-oceanic convergent boundaries
500
What are Intraplate Earthquakes?
Earthquakes that occur in the middle of plates and not at plate boundaries. Occur rarely and are not as powerful
500
What is viscosity?
A fluid's ability to resist flow
500
Describe the Aphanitic rock textures
Fine crystals (can't see them)
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