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WorksheetsGeog1 Unit 1.2 Earth's Story: Life Develops
Total questions: 15
Worksheet time: 7mins
What percentage of Earth's surface is covered in water?
25%
50%
71%
99%
What holds our atmosphere in place?
Gravity
Oxygen
Carbon Dioxide
The Moon
Cells were the only life on earth for over _________ years?
20 million
2 billion
20 billion
2 trillion
Over 475 million years ago the first life moved onto land. Simlpe plants had evolved from _______.
algae
air
oxygen
aglow
Around _________ years ago fish began to adapt on land using fins as legs.
395 billion
395 million
495 billion
495 million
The dinosaurs appears on Earth about ____________ years ago.
23 billion
230 billion
230 million
23 million
66 million years ago a _____________ struck the earth killing 75% of all living things, including the dinosaurs.
planet
comet
asteroid
an alien life form
Describes a group of living things that are no longer living.
fossil
extinct
endangered
dinosaur
The hardened remains of a living thing that died long ago.
fossil
extinct
endangered
minerals
Why are there more animal fossils than plant fossils?
Animals are smaller than plants.
Plants have harder bodies than animals.
Plans have softer bodies than animals.
Animals eat plants.
Which is an imprint fossil?
bone
a cast
an animal track
amber fossil
If a scientist found a fish fossil in the desert, what can they infer?
An animal ate the fish.
The water covered the area long ago.
Today's fish looks the same
The fish is endangered.
About 2 million years ago, in East Africa a species of humans, related to _______ appeared walking upright.
apes
humans
ants
raccoons
Which extinction is considered the largest mass extinction in Earth's history? Basically 96% of all species on Earth disappeared.
Ordovician Extinction
Devonian Extinction
Permian Extinction
Triassic Extinction
Cretaceous Extinction
