If a mineral has a specific gravity of 3, it must be ________ times as dense as water
A) 1
B) 2
C) 3
D) 4
Answer: C
Environmental & Atmospheric Sciences
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A neutron makes a better nuclear bullet than a proton or an electron because it
A. has the greatest mass. B. can be accelerated by electromagnetic fields. C. carries no electrical charge. D. all of the above
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The average age of Earth’s oceanic crust is greater than that of continental crust. Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
Step topography and mesas are created by what physical process?
A) Aeolian processes B) Rill erosion C) Differential erosion D) Glacial processes
Environmental & Atmospheric Sciences
Much of the early hydrogen and helium escaped the earth's atmosphere into space because ________
A) Solar winds were strong B) The earth's gravity was strong C) Solar winds were weak D) The earth's gravity was weak E) All of the above
Environmental & Atmospheric Sciences