Earth's Layers
Rock Types
Fossils
Constructive and Destructive Processes
Timeline
100
The names of the earth's layers from outside to in.
What are the crust, mantle, outer core, and inner core?
100
This rock forms from being compacted and cemented together.
How does sedimentary rock form?
100
This is what a fossil is.
What is the remains of a once-living organism?
100
A process that builds Earth's surface.
What is a constructive property?
100
This is the longest era of the timeline.
What is the Precambrian Time?
200
The crust is this amount of temperature.
What is 1,200 degrees C?
200
This rock forms when molten rock cools and hardens.
How does igneous rock form?
200
This specific type of rock can hold a fossil.
What does a sedimentary rock hold?
200
A process that destroys Earth's surface.
What is a destructive process?
200
This era has the most periods of time.
What does the Paleozoic Era have?
300
The outer core contains this amount of surface pressure.
What is up to 3-7,000,000 times surface pressure?
300
This rock forms when it goes through heat and/or pressure.
How does metamorphic rock form?
300
An index fossil can last for this amount of time.
What lasts for a short amount of time?
300
Erosion is an example of this process.
What is an example of a destructive process?
300
This is the era we're currently in.
What is the Cenozoic Era?
400
The mantle is this amount of temperature.
What is up to 3,450 degrees C?
400
This type of igneous rock forms when the rock forms above ground.
How do extrusive igneous rocks form?
400
An index fossil can be found in these places.
What can be found in many places?
400
Uplifting is an example of this process.
What is an example of a constructive process?
400
The Earth was created this long ago.
What was created 4.5 billion years ago?
500
The inner core is this type of layer.
What is a solid layer of the Earth?
500
This type of rock has large crystals and forms underground.
What do intrusive igneous rocks have?
500
These type of rocks can't hold fossils because of heat and/or pressure.
What can't be held by metamorphic and igneous rocks?
500
Volcanoes are an example of this process.
What is an example of destructive and constructive processes?
500
Humans were created this long ago.
What was created 200,000 years ago?
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