WorksheetsGeologic Time
Total questions: 19
Worksheet time: 34mins
How old do Paleontologists believe the Earth is?
2019 years old
3.6 billion years old
4.6 billion years old
4.6 million years old
What type of event usually marks the end of an Era
A Mass Extinction
A Quinceanera
An earthquake
A Volcanic Eruption
The bottom layer of rock...
is the oldest
is the youngest
has the most fossils
Dinosaur fossils are often found in layers of
sedimentary rock
igneous rock
metamorphic rock
When did Pangea break apart?
Cenozoic Era
Mesozoic Era
Paleozoic Era
Precambrian Era
Following a mass extinction, life on Earth usually...
returns to the way it was before the extinction
recovers after a few days
changes dramatically, as new species become abundant
When did the first humans appear?
Cenozoic Era
Mesozoic Era
Paleozoic Era
Proterozoic Eon
Why does high volcanic activity on Earth trigger mass extinctions?
it causes global warming
it causes global cooling
it can cause sea levels to fall
it can cause glaciers to form
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
Marine plants and invertebrates were abundant during which era?
Precambrian
Paleozoic
Mesozoic
Cenozoic
Dinosaurs, small mammals, and birds are found in this time period.
Precambrian
Paleozoic
Mesozoic
Cenozoic
What time period do we live in?
Precambrian Time
Paleozoic Era
Mesozoic Era
Cenozoic Era
