Record of Life

Why can't scientists not be sure how Earth was formed?

• Rock are constantly being destroyed and created.
• Rocks are covered by sediment
• Oldest rocks are found at the surface
• The beginning of Earth was 4.5 billion years ago.

Theory

• A collection of fossils used to represent Earth's History
• An explanation, supported by many observations and/or experiments, that can be used to accurately explain related occurrences.
• An experiment that has been tested to be true
• A process that is false

The process by which the organisms that are best adapted to a specific environment survive and produce more offspring that organisms that are not as well adapted.

• Geologic time
• Genetic variation
• Natural Selection
• Fossil Record

Extinction

• The disappearance of all members of a species from Earth
• Mutation
• New species evolve
• The disappearance of all members of a species from Earth

What is the "explosion" paleontologists refer to?

• A large amount of new species appear in an environment
• The extinction of a community 
• The habitat of an area is destroyed
• There was a super nova

Fossil

• Physical evidence of an organism that lived long ago that scientists use to study the past; evidence may appear in rocks, amber, or ice
• Wilson cycle
• The theory of Continental Drift
• Plate Tectonics

What do fossils tell us?

• Scientists have discovered that the millions of plants and animals living today are just a small part of all the species of the plants and animals that have ever lived.
• That they are living today on the Earth.
• Nothing
• Jokes

An event that happens when many organisms disappear from the fossil record.

• There were many geologic eras
• All the living organisms moved the ocean
• mass extinction
• Organisms moved on to land

An event that happens when many organisms disappear from the fossil record.

• There were many geologic eras
• All the living organisms moved the ocean
• mass extinction
• Organisms moved on to land

What is Mrs. Davis's favorite fossil?

• Clam shell
• Trilobite
• Ammonite
• Blastoid