How are low-mass red giant stars important to our existence?
A) These stars manufactured most of the carbon atoms in our bodies.
B) These stars manufactured virtually all the elements out of which we and our planet are made.
C) These stars generate the energy that makes life on Earth possible.
D) These stars provide most of the light that reaches us from globular clusters.
A) These stars manufactured most of the carbon atoms in our bodies.
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A cube is subjected to a pressure of 10.0 atmospheres. The un-squeezed length of one side of the cube is 1.20 cm. The squeezed length of one side of the cube is 1.18 cm. The bulk strain on the cube is
A. 0.0362. B. 0.0492. C. 0.0534. D. 0.0598. E. 0.0645.
Based on this graph, if you can measure the mass of a galaxy's central bulge, then you will also know the approximate
A) mass of the galaxy's supermassive black hole. B) mass of the galaxy as a whole. C) diameter of the galaxy. D) diameter of the central bulge.
What is a major disadvantage of optical telescopes?
What will be an ideal response?
Which two factors are critical to the existence of the carbon dioxide (CO2 ) cycle on Earth?
A) life and atmospheric oxygen B) life and active volcanism C) plate tectonics and liquid water oceans D) active volcanism and active tectonics