Study

Week 4

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  • At what age does a human fetus grow fingerprints?
    3 months old.
  • Describe the theory of Continental Drift.
    The plates have moved across Earth's surface for hundreds of millions of years. As the plates move, the continents on them move, too.
  • Explain the Big Band Theory.
    13.8 billion years ago the universe appeared in a sudden big bang - under hot conditions, all the matter and energy that make up the universe spread out.
  • Which happened first, Continental Drift or the extinction of dinosaurs?
    Continental Drift - 95 million years difference.
  • Describe Australia's location on the Tectonic Plates.
    The entire continent of Australia is in the middle of a tectonic plate, with no part of it near a major tectonic plate boundary.
  • How many years between when plants started growing on Earth and animals first roamed the Earth?
    70 million years.
  • What happened to Australia during the last Ice Age?
    During the last Ice Age, sea levels dropped, and the lands of New Guinea and Australia were connected by a land bridge.
  • True or false: dinosaur fossils have only been found on a few continents.
    False! Dinosaur fossils have been found on all seven continents.
  • How long ago were dinosaurs extinct?
    Over 65 million years ago.