Eras
What is the first major era in earth's history?
Precambrian
What happened first:
-Oceans form on earth
- Core and crust form
Core and crust form
What happened first?
- First animals
- First animals with backbones (vertebrates)
First animals
In what era did the dinosaurs exist?
Mesozoic
What was one reason that mammals survived the dinosaur extinction?
Several possible answers:
-They were small
- They were warm-blooded
- They could adapt quickly
- They ate a wide variety of things
What is the second the major era in earth's history?
What happened first?
- Oxygen began to accumulate
- First life on earth
First life on earth (they made the oxygen!!)
True or False?
The dinosaurs appear in the Paleozoic era.
False, they appear in the Mesozoic
True or False:
Mammals did not exist at the same time as the dinosaurs.
True or False:
Humans have been around for about a million years
False: Only about 150,000 years
What is the third major era in earth's history?
Mesozoic
What signified the end of the Precambrian?
The Cambrian Explosion (many, large multicellular organisms)
What happened first?
- First land plants
- First land animals
First land plants. Otherwise the land animals would have nothing to eat!
True or false:
The dinosaurs were around for longer than humans have been.
True. By about 160 million years!
The continents and land masses are no longer moving
False! They are still moving today about as fast as your fingernails grow.
What is the fourth major era in earth's history?
Cenozoic
What was the name of the planet that crashed into young earth?
Thea!!
What was the biggest evolutionary breakthrough that helped animals to leave the water and live on land?
The egg!
What is guessed to be the reason for the extinction of the dinosaurs?
A very large meteor.
How do we know as much about the earth's history as we do? (Be specific... not just "science")
Would accept:
- Fossil Evidence
- Geologic Evidence
What are the three different periods of the Mesozoic?
(Hint: One of them is the name of a famous movie with dinosaurs!!)
Cretaceous
Jurassic
Triassic
About how long is the Precambrian period?
Around 4.1 billion years ago.
Will accept anything from 4 - 4.2 billion years.
What major event ended the Paleozoic era?
The Permian Extinction (when a super-volcano erupted onto a large deposit of coal)
What is the name of the supercontinent that begins to break up during the Mesozoic?
Pangea
What are the names of Ms. Palmer's cats?... All of them...
Ruby, Mabel, and something else I don't actually remember...