Scientists Study Fossils

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

• unconformities

• uniformitariansim

• superposition

• catastrophism

Remains, imprints or traces of once-living organisms

• water

• superposition

• fossils

• rocks

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

• sedimentary rock

• metamorphic rock

• water

• igneous rock

How old do Paleontologists believe the Earth is?

• 2015 years old
• 3.6 billion years old
• 4.6 billion years old
• 4.6 million years old

Fossilized tracks or other evidence of activity of an organism.

• trail 
• trace 
• index
• absolute 

A scientist who studies fossils to learn about organisms that lived long ago.

• chemist
• biologist
• astrologist
• paleontologist

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

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

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.

The idea that conditions and organisms on Earth change in quick, violent events.

• uniformitarianism

• catastrophism

• erosion

• global warming

Represents species that existed on Earth for a short length of time, were abundant, and inhabited many locations.

• trace fossil

• index fossil

• cast fossil

• rock fossil