A gas is expanded to twice its original volume with no change in its temperature. This process is
A) isothermal.
B) isometric.
C) isobaric.
D) adiabatic.
E) isentropic.
A
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How are magnetic fields thought to affect star formation in molecular clouds?
A) They can help resist gravity, so that more total mass is needed before the cloud can collapse to form stars. B) They accelerate the star formation process. C) They allow small stars to form in isolation within gas clouds. D) There are no magnetic fields in interstellar space, so there is no effect.
The process of leveling of the Earth by the wearing away of high places and the transportation of sediments to, and their deposition at, lower levels is called ______________
Fill in the blank(s) with correct word
How do we learn about Earth’s core, mantle, and crust?
a. magnetic field studies b. seismic waves c. x-ray imaging d. all of the above e. a and b
A bimetallic strip is formed from two materials that have different __________
Fill in the blank(s) with correct word