Discuss the historic use of relative and absolute dating to develop the Geologic Time Scale

Were relative dates or absolute dates first employed to develop this time scale? Why? What will be an ideal response?


The student should discuss that the Geologic Time Scale was first developed using relative
dating techniques in the 17th and 18th centuries. The advent of modern chemical theory and
analysis in the late 19th and early 20th centuries made the application of radiometric dating for
absolute dates possible. This was possible when Marie Curie and her colleagues discovered
radioactivity.

Environmental & Atmospheric Sciences

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In the accompanying figure, the U.S. spends slightly more on dog food than it would cost to do what?

What will be an ideal response?

Environmental & Atmospheric Sciences

Which of the following settings would result in the formation of igneous rocks?

A. location 1 B. location 2 C. location 3 D. location 4

Environmental & Atmospheric Sciences

A ________ is an uncontrollable mega-fire covering more than 100,000 acres and burns at high intensities that leave little life behind.

A. brush fires B. fire tornadoes C. pyro-storms D. firestorm

Environmental & Atmospheric Sciences

If, at your home in the Northern Hemisphere, the surface wind is blowing from the northwest, then the region of lowest pressure will be to the ____ of your home

A) north B) south C) east D) west

Environmental & Atmospheric Sciences