Bell Work
Quiz #4
Time Scales
100
Melted rock.
What is Molten rock?
100
Calcium Carbonate.
What will a rock contain if it fizzes with a drop of acid on it?
100
The Precambrian Time.
What is the longest Era?
200
Igneous, Metamorphic, and Sedimentary.
What are the three major types of rocks?
200
Limestone.
What forms when shells of marine organisms get compacted and cemented together?
200
200,000 years ago.
How many years ago did modern humans appear?
300
Particles that settle when whatever is caring them slows down.
What are sediments?
300
Sedimentary.
What type of rock is limestone?
300
245 million years ago and 66 million years ago.
How many years ago did dinosaurs first appear and become extinct?
400
Erosion is when movement starts and deposition is when movement stops.
What is the difference between erosion and deposition?
400
The kind of particles it is made of.
What does the color of a sedimentary rock depend on?
400
The Cambrian Period.
What period did the first trilobites appear?
500
The limewater represented ancient sea water. Blowing air into the limewater represented marine organisms blowing out CO2.The experiment showed that without CO2 blowing into the limewater, you don't get calcium carbonate or calcite.
What did the limewater represent? What did blowing air into the limewater represent? What did the experiment show?
500
Earliest, bacteria-like life appears, water appears on the Earth's surface, Earth is formed.
What happened in the Precambrian Time?
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