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

Last updated 11 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.

Instructions

Read the passage Dating fossils found in rock layers supports theory of human evolution. Then answer the questions below.

Required

1

Question 1

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

Required

1

Question 2

2.

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

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

Radiometric
Geological

Question 3

3.

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

Dating a fossil does not rely on the surround rock layers.

Radiometric dating is based on the comparison of different isotopes.

Fossils found deeper in the Earth are usually younger.

Radiometric dating is a simple and straightforward process.

Radiometric dating can be affected by extreme heat.