Relative dating of geologic events was not possible before the discovery of radioactivity in the late 19th century

a. True
b. False


False

Environmental & Atmospheric Sciences

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The continental edge between locations 4 and 5 is probably



A) a divergent boundary.
B) a convergent boundary.
C) an active continental rift.
D) where two plates are colliding.
E) not a plate boundary.

Environmental & Atmospheric Sciences

Which type of stream channel develops an intricate pattern of smooth curves along a low-gradient landscape?

A. meandering B. floodplain C. braided D. straight E. sinuous

Environmental & Atmospheric Sciences

Suppose you are outside in very cold temperatures, wearing a winter coat that is quite effective at

keeping you warm. Which of the following is true? a. The coat is the source of the heat that keeps you warm. b. Your body generates the heat that keeps you warm. c. The coat prevents your body’s heat from escaping to the surrounding air. d. both (a) and (c) are true. e. both (b) and (c) are true.

Environmental & Atmospheric Sciences

Which numbered area on this geologic map of North America consists of recently added tectonic terranes?

A. 1, southern Alaska B. 2, continental platform of west-central Canada C. 3, continental shield of eastern Canada D. 4, coastal plain along the Gulf Coast of the U.S.

Environmental & Atmospheric Sciences