Misc.
Hot substances rise and cold substances sink (more dense)
In what way do transform plate boundaries move?
They slide past each other.
What is the outside layer of the Earth?
The crust.
When two continental plates converge, what geological features typically form?
Mountain ranges.
Earthquake waves are also known as what
Seismic waves.
What is refraction?
The bending of waves when they enter a new medium because the speed of the wave changes.
What are the three types of plate boundaries?
Transform plate boundaries, convergent plate boundaries, divergent plate boundaries.
List the layers of the Earth from inside to outside.
Core, mantle, crust.
Earthquakes usually occur due to which type of plate boundary?
Transform plate boundaries.
Where are earthquakes most likely to occur?
At fault lines or where two continental plates meet.
The tectonic plates are the layer of the Earth called the:
Lithosphere.
Which plate is more dense, an oceanic plate or a continental plate?
Oceanic plate.
What is the mantle of the Earth made of?
Liquid rock called magma.
How do rift valleys form?
Rift valleys form when two plates diverge or move away from one another.
Scientists use seismic waves to study what?
The Earth's interior/The layers of the Earth.
Why is the inner core solid?
From extreme pressure.
At what plate boundary do mid-ocean ridges form as they spread apart?
Divergent plate boundaries.
Earth's plates float on top of which layer of the Earth?
Middle mantle (athenosphere)
What is one geological feature that occurs at a subduction zone?
Trenches and/or volcanoes.
How many seismographs are needed to locate an earthquake?
3
Explain 2 ways P and S waves are different.
P waves are faster than S.
P waves go through solids and liquids and S only go through liquids.
P waves go through the Earth and S waves go up and down through the Earth.
When an oceanic plate and a continental plate collide, what happens? What is this area called?
The oceanic plate gets pushed underneath the continental plate creating a subduction zone.
The Earth's mantle moves due to what?
Convection currents.
An underwater mountain chain where new ocean floor is formed
Bonus: Mid-Ocean Ridge.
The underground point of origin of an earthquake (where the earthquake begins) is called the ? and the place above this on the Earth's surface is called the ?
The focus. The Epicenter.