The History of Life

The type of fossil that is an organism trapped in tree resin that hardens after being buried is?

• Natural Cast

• Amber Preserved Fossil

• Trace Fossil

• Permineralized fossil

The type of fossil that is an impression left in sediment, and minerals fill the impression in, recreating the original shape of the organism

• Natural Cast

• Amber Preserved Fossil

• Trace Fossil

• Permineralized Fossil

The type of fossil that is a record of the activity of an organism, such as a nest or fingerprints

• Amber Preserved Fossil

• Natural Cast

• Trace Fossil

• Permineralized Fossil

How are permineralized fossils formed?

• The organism is immersed in a bog

• An impression is left in the sediment

• Organism becomes encased in materials such as ice or volcanic ash

• Minerals are deposited around a hard structure and may replace the structure

What can be used to find the age of a fossil or rock?

• The Brittleness Spectrum

• Radiometric Dating

• X-Ray Dating

• Relative Dating

Which of the following periods are part of the Paleozoic Era? (Select all that apply)

• Permian Period

• Devonian Period

• Mesozoic Period

• Cambrian Period

Which of the following are part of the Mesozoic Era? (select all that apply)

• Tertiary period

• Cretaceous period

• Jurassic period

• Triassic period

What term is used to refer to the smallest unit of geologic time?

• century

• era

• period

• epoch

How old is the Earth estimated to be?

• 2022 years

• 10,000 years

• 4.6 billion years

• 4.6 million years

The amount of time it takes for half of a radioactive isotope to decay is known as the:

• half-life

• isotope

• product

• radiocarbon