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6 Written questions

6 Multiple choice questions

  1. Precambrian: cyanobacteria, eukaryotes, prokaryotes, oxygen in the atmosphere, ozone
    Paleozoic: creepers, plants, aerobic animals
    Mesozoic: Age of the Reptiles, dinosaurs
    Cenozoic: humans and their ancestors
  2. the period in the geologic time scale beginning about 65 million years ago and continuing until the present day- most fossils from this era. Many mammals, birds, insects, and flowering plants. Humans and their ancestors are in this era
  3. mass extinction of most of a species
  4. estimating the age of a sample or event in years , usually by measuring the amount of unstable atoms in the sample
  5. a cell that contains a central nucleus and a complicated internal structure
  6. a species of humans with modern features that may have migrated out of Africa 100,000 years ago and eventually into every continent

5 True/False questions

  1. Prosimiansthe first primate ancestor; also, a group of living primates that includes lorises and lemurs, 55 million years ago

          

  2. Relative Datingestimating the age of a sample or event in years , usually by measuring the amount of unstable atoms in the sample

          

  3. Neanderthalsthe first primate ancestor; also, a group of living primates that includes lorises and lemurs, 55 million years ago

          

  4. Precambrian Timea period in the geological time scale beginning when the Earth originated, 4.6 million years ago, and ending when complex organisms appeared, about 540 million years ago- no oxygen in the atmosphere and all creatures lived in the ocean to escape harmful UV rays. Prokaryotes only exsisted. They were anaerobic. Then, cyanobacteria (photosynthetic organisms) began to produce oxygen that seeped through the water, into the atmosphere, and formed the ozone layer. Eukaryotes began to develop.

          

  5. Paleozoic Erathe period in the geologic time scale beginning about 65 million years ago and continuing until the present day- most fossils from this era. Many mammals, birds, insects, and flowering plants. Humans and their ancestors are in this era