Chapter 2 Lesson 1: Geologic Change Over Time

Principle that Earth's processes occurring today are similar to those that occurred in the past 

• unconformities 
• uniformitariansim 
• superposition 

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Remains, imprints or traces of once-living organisms

• water
• superposition
• fossils 

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In which kind of rock do we usually find a fossil?

• sedimentary  rock
• rock candy
• hard rock

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Fossilized tracks or other evidence of activity of an organism.

• trail 
• trace 
• index
• absolute 

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The picture is an example of .......

• trace fossil.
• carbonization.
• original fossil.
• cast.

The weather conditions over a long period of time is known as

• uniformitarianism

• climate

• weather

• global warming

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Fossils of the same plants and animal species have been found on continents that are separated by the Atlantic Ocean. Which of the following claims does this evidence support?

• These animals and plants crossed the Atlantic Ocean.

• The Atlantic Ocean was once a large body of freshwater.

• The continents that are now separated by the Atlantic Ocean once formed a single landmass.

• The continents that are now separated by

  the Atlantic Ocean have the same kinds of organisms today as they did millions of

  years ago.

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What does the theory of continental drift state?

• The continents were once joined in a super-continent and have moved over time
• Continents are stationary and do not move
• The Earth is broken into lithospheric plates that move due to convection currents
• none of the above

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What is represented by the picture? 

• Sea-floor spreading
• Pangea
• How the continents are arranged today
• Volcanoes

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True or False : Sea-floor Spreading adds new material to the ocean floor?

• True
• False

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