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Science Explainer: Dating fossils found in rock layers supports theory of human evolution

Last updated 9 months ago
3 questions
Note from the author:
Read the passage Dating fossils found in rock layers supports theory of human evolution. Then answer the questions below.
Read the passage Dating fossils found in rock layers supports theory of human evolution. Then answer the questions below.
Required
1
Drag each answer choice into the correct space. Not all answer choices will be used.

Forms of an element that have the same number of ____________but a different number of neutrons in the nucleus of the element's atoms are called _____________.
Other Answer Choices:
protons
electrons
isotopes
fossils
Required
2

Drag each description into the correct box to show the dating method it describes.

  • uses location in the rock strata to determine age
  • uses the elements carbon, potassium and argon
  • compares decaying isotopes of an element to determine age
  • is difficult to use when surrounding rock is similar in color
  • Radiometric
  • Geological
Required
1

Which statements about dating techniques are true? Select two correct answers.