The Geologic Time Scale is a record of what?
  • old geologists
  • sweet geology music
  • the known history of rocks and fossils
  • a list of every living thing ever
Which of the following statements about the fossil record is true?
  • all organisms become fossils
  • organisms having soft body parts make up most of the fossils
  • all organisms that have shells become fossils
  • the fossil record is incomplete
The Law of Superposition helps scientists to determine what?
  • The absolute age of rock layers
  • The age of fossils
  • The relative age of rock layers
  • the super powers of rocks
A scientist who studies fossils is called a what?
  • Fossilologist
  • Rock Hound
  • Archeologist
  • Paleontologist
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
A bug stuck in amber is an example of what type of fossil?
sc-10 sb-5-Geologic Timeimg_no 205.jpg
  • cast
  • mold
  • trace
  • preserved remains
What type of rock do fossils form in?
  • Igneous
  • Sedimentary
  • Metamorphic
  • Classic
According to the law of superposition, which layer is the youngest?
sc-10 sb-5-Geologic Timeimg_no 206.jpg
  • A
  • B
  • C
Why is the fossil record incomplete?
  • fossils get eroded away over time
  • most organisms never became fossils
  • scavengers and decomposers eat them too quickly
  • all of the above
Paleozoic, Mesozoic & Cenozoic are all
  • Epochs
  • Eras
  • Periods
  • Eons
Which is the most recent era of time- the one that we are currently in?
  • Mesozoic 
  • Paleozoic 
  • Cenozoic 
  • Precambrian 
Scientists chose where units of geologic time began and ended based on major changes in life forms at certain times.
sc-10 sb-5-Geologic Timeimg_no 207.jpg
  • true
  • false
The dinosaurs and reptiles were dominant in which Era?
  • Precambrian
  • Mesozoic
  • Paleozoic
  • Cenozoic
Known as the age of the mammals?
  • Mesozoic Era
  • Holocene Epoch
  • Cenozoic Era
  • Cambrian
The disappearance of a species.
  • Evolution
  • Extinction
  • Migration
  • Mutation
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
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