What is divergent boundary? (Give definition and example)
Plates are moving away from one another. Example: Seafloor Spreading forms mid-ocean ridges
100
What is a seismograph?
A device used to record and measure seismic waves
100
What are hot spots?
Magma rises from below the Earth’s plates in a location that is extremely hot
100
What is rock that forms underground?
Intrusive rock
200
What is the axis?
An imaginary line through the poles tilted at 23.5 degrees
200
What is the lithosphere?
the rigid crust and upper mantle that sits on top of the asthenosphere.
200
What is the epicenter?
The point on the surface of the Earth directly above the focus of the earthquake
200
What is viscosity?
“Thickness” A fluid’s ability to resist flow.
200
Extrusive rock is what?
Rocks that form above ground (Volcanic Eruptions)
300
What is the 1st step of the scientific method?
State the problem
300
What is the athenosphere?
the molten material below the lithosphere which causes plates to move
300
What is the Ring of Fire?
The nickname of the region bordering the Pacific Ocean where 80% of all earthquakes occur on Earth
300
What is the tube where magma rises through the volcano?
Tube where magma rises through a volcano
300
Define Phaneritic.
Large Crystals (Can Be Seen)
400
What is GPS?
Used to locate any on Earth using Satellites and Triangulation.
400
Who is Alfred Wegener?
A meteorologist who developed theory of continental drift. Theory supported after death. Used fossil evidence and pieced together continents such as South America and Africa.
400
What are fault zones?
Faults are cracks which occur when plates move past each other
400
Describe a shield volcano.
Very wide or broad, very runny (low-viscosity) lava, non-explosive due to low gas content: Kilauea (Hawaii)
400
What's Sillicate?
Any Mineral Containing Silicon (Si) and Oxygen (O)
500
Describe the Earth when it is slightly wider at the equator, due to fast rotation.
Oblate Spheroid
500
What is Pangaea?
Supercontinent when all Earth land was connected 200 million years ago
500
What is the point underground where the stress is released along the fault and seismic waves are created?
Focus "Hypocenter"
500
What is the smallest particle of pyroclast?
Volcanic Dust
500
What is cleavage?
Minerals that break apart in flat sheets or even shapes