What allowed scientists to confirm their theories that the Earth's interior had layers?
a. A large earthquake that occurred in Alaska
b. A system of 800 seismic stations placed worldwide
c. The correlation between intensity, frequency, and characteristics of waves
d. All of these choices
ANS: D
Scientists used various aspects of research to confirm the presence of layers within the Earth. They
were able to confirm their theory of layers with information collected during an earthquake in Alaska
in 1964. There were 800 stations that recorded information on the waves form the earthquake.
Information can be found in the section The Study of Earthquakes Provides Evidence of Layering.
You might also like to view...
A rapid downslope mass movement of snow and ice is called a(n) ____________________. Fill in the blank(s) with the appropriate word(s)
The major factor in glacial periods lasting tens of millions of years appear to be changes in the Sun's heat output, rather than changes in shapes, sizes, and orientations of the continents and oceans.
Answer the following statement true (T) or false (F)
During the winter, an air mass that moves into coastal sections of Oregon and Washington from the northwest would most likely be ____
A) mP B) mT C) cP D) cT
The Coriolis force would be strongest on a(n):
A) supersonic jet. B) baseball pitcher's 100 mile-per-hour fastball. C) flock of Canada geese migrating north. D) alien spaceship the size of New York City that is flying above a north-bound freeway at the speed of traffic.