Unit 7

What are the two types of Earth's layers?

Compositional layers ​ (a)   ​ ​ (b)   ​ (c)  

• Core
• Mantle
• Crust
• Inner Core
• Lithosphere
• Outter Core

Match the following

• Asthenosphere

• beneath the asthenosphere. It encompasses the lower mantle, where material still flows but at a much slower rate than the atmosphere.

• Mesosphere

• The innermost geological layer of planet Earth. It is primarily a solid ball and does NOT flow like the outter core

• Lithosphere

• The outermost and most rigid mechanical layer of the Earth. It includes the crust.

• Inner Core

• A layer of mostly liquid iron and nickel beneath the mesosphere. This is the only layer of the Earth that is a TRUE LIQUID

• Outer Core

• underneath the lithosphere and is a region of the mantle that flows relatively easily (it is not liquid)

Define Plate Tectonics

• A scientific theory that explains the structure of Earth's crust and how major landforms are created as a result of Earth's subterranean movements

• Where tectonics move apart.

• Where tectonic plates collide and oceanic crust is formed

• sudden ground movement caused by sudden release of energy stored in rocks

Plate Boundaries are where two tectonic plates​ ​ ​ (a)  

• meet
• move apart
• slide past each other
• shake hands

Convergent, Divergent and Transform are the three types of ​ ​ (a)  

• plate boundaries
• continental drift
• intraplate activity
• tokyo drift

Match the boundary with its description

• convergent

• where tectonic plates collide

• divergent

• where two plates slide past each other

• transform

• Where tectonic plates move apart

When plate collisions occur in a convergent plant boundary these areas can produce​

(a)   ​ and (b)  

• earthquakes
• volcanoes
• thunderstorms
• meteor showers

AS plates rub against each other, huge stresses can cause portions of rock to break, resulting in earthquakes. Places where these breaks occur are called