What was the reason for installing a worldwide network of seismometers in the 1950s and 1960s?
A) to save human lives by predicting volcanic eruptions and earthquakes
B) to study plate tectonic theory
C) to monitor underground nuclear bomb testing
D) to study mine blasts
Correct Answer:
Verified
Q1: What is the composition of Earth's crust?
A)
Q2: How does a seismograph work?
A) Sensitive triggers
Q3: Choose the option that puts the waves
Q5: What process explains the appearance of a
Q6: A mountaintop is made of limestone overlying
Q7: X-rays are not used to study the
Q8: Where is water movement the greatest in
Q9: At what depth do diamonds form in
Q10: Waves are considered elastic because
A) they bounce
Q11: Which fact is not important when using
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