Geo Time WU

The earth is ______________of years old

• Hundreds

• Millions

• Billions

• Trillions

What era did the formation of the earth occur?

• Paleozoic

• Precambrian

• Cenozoic

• Cambrian

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 are the four eras in order from OLDEST to NEWEST?

• Pre-Cambrian, Paleozoic, Mesozoic, Cenozoic

• Pre-Cambrian, Mesozoic, Paleozoic, Cenozoic

• Cenozoic, Mesozoic, Paleozoic, Pre-Cambrian

• Mesozoic, Pre-Cambrian, Cenozoic, Paleozoic

The dinosaurs and reptiles were dominant in which Era?

• Precambrian

• Mesozoic

• Paleozoic

• Cenozoic

90% of Earth’s history occurred during which era?

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

Jellyfish are one of the oldest species on Earth. In what time period did they first appear?

• Precambrian

• Paleozoic

• Mesozoic

• Cenozoic

What are fossils?

• the oldest layers of rock in a region

• objects that people of long ago left behind as artifacts

• the remains or traces of an organism preserved from the

  geologic past

• living creatures with habitats in or around rock

Which type of fossil would look just like the body part of a once-living thing?

• mineral

• footprint

• cast

• petrified wood

Which type of rock are most fossils found?

• sedimentary rock

• metamorphic rock

• igneous rock

• fossils