Science (Continental Drifts and stuff)

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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


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