Major Geologic Events

What order is used when placing events on a timeline?

• Chronological Order
• Alphabetical Order
• Reverse Order
• No specific order

Which time period is the longest?

• Precambrian Time

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

How many mass extinctions have we had in Earth's history?

• 3

• 1

• 0

• 5

This palm tree fossil was found in Alaska. What can you conclude?

• Alaska used to be under water
• Alaska once had a much warmer climate
• Alaska was once an island
• This fossil washed up on the Alaskan shore

When a large amount of living things end it is called:

• Death

• Mass extinction

• Transition

• Extinction

What do scientists believe is the most likely reason the dinosaurs died?

• A massive volcanic eruption

• An ice age that covered almost all of Earth in ice

• The breaking apart of Pangea

• An asteroid crashed into Earth

These life forms have not been on Earth very long and have made many changes to Earth:

• insects

• fish

• mammals

• humans