📚EA8: HW43 (2.27)

The theory of Plate Tectonics states:

• The Earth is made of porcelain plates that make up its crust.
• Earth's surface is made of rigid slabs or plates that move with respect to each other.
• The Earth's crust is two types of plates.

Plates move slowly over Earth's hot and semi-plastic __________.

• inner core
• granite
• mantle
• outer core

The word "tectonic" describes the ________.

• forces that shape Earth's surface and the rock structures that form as a result
• type of oily plates found in the Earth's inner core 
• the type of energy needed in the Earth to push it in orbit
• the surfaces that glide around in and out of the valleys and mountains of the Earth

Plates that separate on the seafloor, earthquakes result and a __________ forms.

• river
• volcano
• mid-ocean ridge 
• lake

When plates slide past each other, ______________ can result.

• lava
• rivers
• mountains
• earthquakes

Compare to Earth's interior layers, Earth's outermost layers are ___ and ___.

• soft; moist
• soft; cold
• cold; rigid
• moist; rigid

Earth's tectonic plates are large pieces of the ___________.

• Mesosphere
• Barysphere
• Lithosphere
• Earthsphere

The asthenosphere is located _______.

• below the Lithosphere
• above the Barysphere
• in the Earthsphere
• between the Barysphere and the Mesosphere

Even though it is solid, the asthenosphere behaves like a ____ material because it is so hot.

• crusty
• rocky
• slime-like
• plastic

As the lava cools and hardens, it forms new _____.

• land crust
• oceanic crust
• inner core 
• outer core