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Worksheets9.5 Age of Earth (Form 1)
Total questions: 15
Worksheet time: 8mins
The Earth is about __________ yeras old.
50.6 million years
4.5 million years old
4.5 billion years old
4.5 trillion years old
Who use the geological time scale to study the history of the Earth systematically?
Geologist
Biologist
Botanist
Zoologist
Each era is divided into several periods.
true
false
Which of the following answers are Era? (tick more than 1)
Cenozoic
Paleozoic
Mesozoic
Methozoic
How can scientist find out the existence of the creature in the diagram?
History books
Movies
Legend
Fossils
Geologist use radioactive dating to find the absolute age of rocks.
true
false
A _____________________ is the remains or evidence of an ancient organism.
paleontologist
preserved
fossil
extinct
Why is it important to study fossils?
Fossils are fun to study.
Fossils are fortune tellers.
Fossils are evidence of organisms that lived long ago.
Fossils are found everywhere in the world.
When something is _____________________ it no longer exists.
preserved
fossil
extinct
Between insects and flowering plants, which appeared on Earth first?
Insects
Flowering plant
When did fish first appear on Earth?
1000 million years ago
500 million years ago
100 million years ago
What is the picture show?
Biological time scale
Geological time scale
Physical time scale
When did seaweeds first appear on Earth?
100 million years ago
500 million years ago
1000 million years ago
2000 million years ago
Which period below found in Mesozoic era?
Permian
Triassic
Jurassic
Cretaceous
Devonian, Silurian and Carboniferous exist in ...
Paleozoic
Mesozoic
Cenozoic
