Types of Rocks
The Rock Cycle
Layers of the Earth
Plate Tectonics
Rocks of Ages
100
The three types of rocks
What are: 1. igneous rocks; 2. sedimentary rocks; 3. metamorphic rocks?
100
The breaking down of minerals and rocks into small pieces (sediments)
What is weathering?
100
Middle layer; the thickest layer of the Earth
What is the mantle?
100
The slow movement of Earth's landmasses riding on continental and oceanic plates
What is continental drift?
100
A large, slow moving mass of ice
What is a glacier?
200
Limestone (a rock made from heat and pressure but not from melting)
What is: (an example of) a sedimentary rock?
200
The removal of soil by gravity, wind, and running water
What is erosion?
200
The hottest layer; made of solid iron and nickel
What is the inner core?
200

What did scientists believe happened to the continents millions of years ago?

They were all one big piece of land

200
Scientists use these to provide information about life and conditions of the past.
What are: fossils?
300
A rock that has changed from one type of rock to another by heat or pressure; may also have a swirled look
What is a metamorphic rock?
300
Dropping sediments into a new location

What is: deposition?

300
This increases as the depth beneath the surface of the Earth increases.
What is: pressure?
300
The type of boundary formed where two tectonic plates come together
What is a convergent boundary?
300
Fossils are usually found in this type of rock.
What is: sedimentary rock?
400
Rocks that are usually found near volcanoes and are formed from the cooling and hardening of hot magma or lava
What are igneous rocks?
400
The 4 main layers of the Earth
What are: 1. crust; 2. mantle; 3. outer core; 4. inner core?
400
The type of boundary formed when tectonic plates move apart
What is a divergent boundary?
400
The way trenches, mid-ocean ridges, and mountain ranges are formed
What is plate movement (past and present)?
500
The addition of these is needed over time for a sedimentary rock to be changed into a metamorphic rock.
What are: heat and pressure?
500
When rocks change from one form to another and back again over many years
What is the rock cycle?
500

This causes the movement of material within the Earth.

What is: heat energy?

500
When the tectonic plates of the Earth slip or slide past each other horizontally, this boundary is formed.
What is a transform fault boundary?
500
Millions of years ago, there was only one super continent.
What is Pangaea?
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