Earth
Rocks
Rock Layers
Grand Canyon
Rocks Continued
100
The Earth.
What is 4.5 billion years old?
100
A rock that has compacted and cemented together.
What is a sedimentary rock?
100
A layer of imestone.
What is the result of an acient ocean?
100
The Grand Canyon.
What is 10 million years old?
100
All rocks!!
Which type of rock(s) can become metamorphic
200
The inner core.
What is the hottest layer of the earth?
200
A numeric time scale.
What is a time scale that shows how many years ago events happened?
200
Different layers of rock together.
What is a formation?
200
Slow cooling rate
What causes rocks to have large crystals?
300
The trilobite.
What is the first sign of life.
300
Large crystals in an igneous rock.
What is the result of a slower cooling rate?
300
A fossil that has lived for a very short period of time in many places around the world.
What is an index fossil?
300
Igneous
What type of rock is Rhyolite?
400
When humans first appeared
What was 200,000 years ago
400
The way they form.
What is the major difference of all three types of rock?
400
The rock layer is older.
What does it mean when a rock layer is deeper down than the other?
400
The process of finding relationships between rocks from different layers
What is correlation?
500
Rhodinia
What is the name of the first supercontinent?
500
They contain calcium carbonate.
What does it mean when a rock fizzes when you pour acid on it?
500
To compare the age of rock layers.
What is the use of an index fossil?
500
Conglomerate
What is an example of a sedimentary?
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