The Rock Cycle
rock
What moves upwards through the layers of the Earth and cools, then crystallizes to form igneous rock?
Liquid magma
What is the name of the super continent scientists believe existed long ago?
Pangaea
This occurs when plates slide past each other.
Earthquakes
What is the top layer of the Earth?
How do Earth's processes change a rock from one type to another?
The rock cycle
What type of rock is made up of many layers?
Sedimentary rock
What does the Continental Drift Theory suggest?
Pangea gradually drifted apart to where the continents are today
This occurs when continental plates converge with oceanic plates.
A mountain range or an ocean trench
How many layers does Earth have?
4
What are the three major types of rocks?
Igneous, sedimentary, and metamorphic?
Sedimentary rocks may contain what?
Fossils of plants/animals
What are two things that can provide evidence of continental drift?
Fossils and the continents look like they could be part of a puzzle
This happens when oceanic plates converge.
Volcanoes or ocean trenches
The outer core is composed of these elements.
Nickel and iron
This tells scientists whether a rock or fossil is older or younger than what is around it.
Relative age
How are fossils evidence of continental drift?
Plant and animal fossils are found on the coastline of different continents
Name the three types of plate boundaries
transform plate boundary, convergent, and divergent
This is the state of matter for the outer core.
Liquid
This tells a precise number for a fossil or rock
Numeric age
What type of rock is formed from layering of sand/particles and pressure?
Sedimentary rock
What do scientists think might happen millions of years from now?
The continents could drift together in another super continent.
The occurs when oceanic plates diverge from one another.
Magma rises and spreads out, causing the sea floor to spread
The inner core is a solid mass of this element.
Iron