Which type of earthquake wave most closely resembles sound waves?
a. P-waves
b. S-waves
c. Love waves
d. Rayleigh waves
e. permanent waves
A
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What are contour lines on a map that connect points with equal temperatures called?
The nature of volcanic eruptions is closely related to plate tectonics and magma type. Which of the following best describes basaltic magma?
A. relatively SiO2 rich and cool B. relatively SiO2 poor and cool C. relatively SiO2 poor and hot D. relatively SiO2 rich and hot
Which of the following is not an important seawater nutrients needed by phytoplankton?
A) Iron B) Nitrogen C) Phosphorus D) Silica E) Sodium
What is the process in which unstable atoms of an element decay and emit excess energy in the form of particles or waves?
a. Radioactivity b. Organic decomposition c. Ionic emission d. Nuclear decay