Life on Earth: Origin & History


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question 1 of 3

In which eon did the dinosaurs both live and go extinct?

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1. In the early formation of life on Earth, polymers aggregated together to form _____.

2. About how old is Earth?

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About This Quiz & Worksheet

The origins of life on Earth goes back millions of years. You can discover how much you know about life on the planet by answering questions on points like the eon when dinosaurs lived and went extinct and something that formed from polymers.

Quiz & Worksheet Goals

The quiz will cover the following topics:

  • Approximate age of Earth
  • Person who first speculated about how life on Earth began
  • The Cambrian Explosion

Skills Practiced

  • Defining key concepts - make sure you can accurately define the Cambrian Explosion
  • Knowledge application - use your knowledge to answer questions about the formation of polymers and the age of the Earth
  • Information recall - access the knowledge you've gained regarding the eon when dinosaurs lived and also went extinct

Additional Learning

You can continue learning about the planet in the lesson named Life on Earth: Origin & History. These topics will be covered in greater detail:

  • Early atmosphere on Earth
  • Some of the first life forms
  • Primordial soup
  • Precambrian period