Science (Continental Drifts and stuff)
What feature is formed in the ocean along the subduction zone?
Trench
True or False: Oceanic crust is thinner than continental crust.
True
True or false. Faulting causes earthquakes
True
How thick is the inner core?
1250 km
How thick is the outer core?
200 km
How thick is the mantle?
2900 km
How thick is the crust?
3-30 miles (7-75 km)
What percentage of the earth's volume is the mantle?
84%
What are oceanic crusts made out of?
Basalt
Why is Transform Plate Boundaries often described as "horizontal" sliding?
Because the plates are being pushed together as they are moving horizontally
Transform Boundary - Continental
Causes earthquakes
What are constructive forces?
Construct and make up the Earth's surface: mountains and other land areas
Convergent Boundary - Continent / Continent
Continent pushes against each other which creates folding and faulting. Creates mountain formation
Describe Divergent Boundary - Continental
Continental plates move away, creates Rift Valleys, in East Africa, and Red Sea
By which method is heat from deep in earth's interior transferred to its crust?
Convection in the mantle
What are some effects of Divergent Boundary - Oceanic ?
Creation of NEW sea floor. As the oceanic plates move AWAY from each other exposing magma. North America drifting away from Africa
Give an example of how plate movement directly affects the destruction of Earth's surface?
Earthquakes
What do we call the breaking and vibrating of the Earth's crust?
Earthquakes
True or false. The earthquake does not start in the focus
False
What are continental crusts made out of?
Granite
What 2 metals is the core made out of?
Iron and Nickel
Between P S and L waves, which causes the most damage
L waves, last wave, slowest wave and on the surface
Which layer of the Earth is made up of tectonic plates?
Lithosphere
List the 3 layers of the mantle.
Lithosphere, asthenosphere, mesosphere
What is the thickest layer of the Earth?
Mantle
Which layer would be the longest to drill through
Mantle
Which is denser? Oceanic or Continental crusts?
Oceanic
Convergent Boundary - oceanic / oceanic
Oceanic goes under another oceanic plate which creates a subduction and trench, creates an island chain, like Japan
Convergent Boundary - oceanic / continental
Oceanic goes under the continental plate and creates a subduction and a trench which creates a volcano
What happens when a tectonic plate gets subducted?
Oceanic plates get pushed under, subducted/trench. The tectonic plates pushed under melt and rises up creating a volcano
What is the only layer that is not solid?
Outer core
What is the name of the instrument that measures the strength of an earthquake?
Seismograph
What are destructive forces?
Slowly wear away mountains and eventually other Earth's surfaces
The surface on the Earth right above the start of an earthquake is?
The epicenter
P waves
a seismic wave that causes particles of rock to move in a back-and-forth direction
S waves
a seismic wave that causes particles of rock to move in a side-to-side direction
Give an example of how plate movement directly affects the construction of Earth's surface?
pushing continents together and further away
L wave
slowest siesmic wave it moves thruogh the earths surface
