Show:
Precambrian
Mesozoic
Paleozoic
Cenozoic
Mystery
100
How long did the precambrian era last?
Aprox. 4 billion years.
100
What does mesozoic mean?
Middle Animals.
100
Which animal group flourished the most in the paleozoic era? a) Land animals b) Marine animals c) Birds
b) Marine Animals
100
Were there dinosaurs in the cenozoic era?
No.
100
Name the eras from oldest to newest.
Precambrian, Palaeozoic, Mesozoic, Cenozoic
200
When did the precambrian era start?
Aprox. 4.5 billion years ago
200
How long ago was the mesozoic era?
Aprox. 250 million years ago.
200
How long ago did the paleozoic era start?
542 million years ago.
200
Which of the following animals was not found in the cenozoic era? a) Cows b) Sheep c) Gizelles d) Bears
d) Bears
200
In which era would you find dinosaurs?
Mesozoic
300
What type of rock was formed in the precambrian era?
Sedimentary.
300
Were sea levels higher or lower in the Mesozoic era?
Higher.
300
What was the climate like in the paleozoic era?
Mostly warm.
300
How many parts was cenozoic devided into?
3 parts
300
Which era came before the ice age?
Paleozoic
400
Did the earth look similar in the precambrian era compared to the earth now?
No. The earth was almost unrecognizable in the precambrian era.
400
Fill in the blank. The mesozoic era began with a mass _________?
Extinction
400
How did the paleozoic era begin?
By the breaking of one continent, and the forming of another.
400
What does cenozoic mean?
New life.
400
In which era did trees start growing?
Paleozoic.
500
About what percent of the earths history is covered by the precambrian era?
Aprox. 88%
500
Name the three geological time periods that happened within the mesozoic era.
Triassic Period, Jurassic Period, and Cretaceous Period.
500
Which came first, the chicken or the egg?
The egg. Long before birds were evolved, tetropods began to lay eggs.
500
What was the original name of "cenozoic"?
Kainozoic
500
When did bacteria start to form?
Precambrian