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Rocks
Rock Cycle
Human Impact
Age of Earth
More Age of Earth
100

What is weathering

the breakdown of rocks

100
The three main types of rock.
What is igneous, sedimentary, and metamorphic?
100

Building a hydroelectric dam does this to people that live near it?

Force them to move

100

Plants or animal remains used to define and identify geologic periods

Index Fossils

100

Geologists use methods such as rock layers, index fossils, and faulting for this type of dating.

What is relative?

200

What is erosion

The transport of sediment

200
The geological process that forms metamorphic rock.
What is heat and pressure?
200

The negative impact of radioactive materials on humans is this

Illnesses, cancer, and mutations

200

How old is the Earth?

4.6 billion years old

200
In this law, the oldest rock layers are at the bottom, and the youngest layer is on the top.
What is the law of superposition?
300

How are sedimentary rocks formed?

Compaction and cementation of sediments

300
The geological processes that forms sedimentary rock.
What is weathering, erosion, deposition, and compaction?
300

This happens to animals when a rainforest is removed

They are displaced and could go exitinct

300

What is radioactive decay?

the breakdown of an atom into a stable isotope of the same element or into a different one

300
This can cause rock layers to change depth, resulting in data that will not agree with the true age of the layers.
What is faulting?
400

The layer of the Earth that provides Earth with it's magnetic field.

What is the outer core?

400
The type of rock formed by cooling magma or lava.
What is igneous?
400
Increasing carbon dioxide levels in our atmosphere from humans is causing this

Climate change

400
The term used to identify an area where two tectonic plates are sliding against each other.
What is a transform boundary?
400
Geologists use methods such as analyzing radioactive material (uranium, carbon-14, etc) for this type of dating.
What is absolute?
500

the type of igneous rock that forms above ground

extrusive

500

The difference between magma and lava

lava is on the surface magma is not

500

Signs on beaches read: Do not remove grass. This happens if you remove the grass

The beach will erode

500

what evidence from fossils supports continental drift

same fossils on different continents & tropical fossils being found on mountains/up North

500
Scientists infer the Earth is 4.6 billion years old because they examined the radioactive decay in rocks from this location.
What is the moon?