Changes to Earth Over Time

rock that forms when hot, liquid rock material cools and hardens into a solid

• igneous rock
• metamorphic rock 
• sedimentary rock
• sand 

the dropping off of sediment 

• weathering 
• moraine
• mass wasting
• deposition 

breaking down of rocks into smaller pieces by natural processes

• mass wasting
• weathering
• erosion
• deposition 

Pangaea refers to a...

• large supercontinent
• Greek superhero
• Tropical fern
• Mass extinction

What type of rock do fossils form in?

• Igneous
• Sedimentary
• Metamorphic
• Classic

7. The ________helps us build a picture of the history/geologic time of Earth.

• Superposition
• Theory
• Fossil Record

This provides information about the history of life on earth and how organisms lived and evolved over time.

• fossil data
• fossil evidence
• fossil  record
• remains of fossil

Fossils of ancient sea life have been found in Missouri.  What does the presence of these fossils indicate about the past of Missouri?

• Millions of years ago, a giant tidal wave swept marine plants from the Gulf of Mexico onto the land.
• Millions of years ago, Missouri was beneath an ocean or sea.
• Millions of years ago, the Mississippi river flooded and deposited the marine plants onto land.
• Millions of years ago, tectonic plate movements carried sea fossils to present-day Missouri.