Thermal convection movement in the upper mantle
A) generates the electric current that powers Earth's magnetic field.
B) greatly influences Earth's surface features.
C) heats Earth's core by frictional forces.
D) is usually negligible.
Answer: B
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How does a 1.2-solar-mass white dwarf compare to a 1.0-solar-mass white dwarf?
A) It has a larger radius. B) It has a smaller radius. C) It has a higher surface temperature. D) It has a lower surface temperature. E) It is supported by neutron, rather than electron, degeneracy pressure.
Energy transport by ____________________ is important when photons cannot readily travel through a gas
Fill in the blank(s) with correct word
The stars with masses comparable to our Sun's, but sizes like the Earth are
A) red giants. B) red main sequence stars. C) neutron stars. D) white dwarfs. E) blue main sequence stars.
The transmission of sensible heat through matter by transfer of energy from one atom or molecule in the direction of decreasing temperature is:
What will be an ideal response?