It took two centuries for the Copernican model to replace the Ptolemaic model because:
A) in Copernicus' time, there were no telescopes.
B) the Church wouldn't let anyone talk about Copernicus' model for 200 years.
C) there was no scientific evidence to support either model until Galileo made his observations.
D) the Ptolemaic model was simpler and more aesthetically pleasing.
E) the Copernican model required complicated new terms to explain it correctly.
C
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a. over a hot spot b. along a subduction zone c. Inside a chamber d. along plate boundaries e. within a caldera
Adding heat boosts free energy. The greater the free energy of reactants, the closer they are to ____
a. feedback inhibition b. an endergonic reaction c. an induced fit with an enzyme d. activation energy e. cofactor interaction
Which of the following phenomena is not commonly associated with the star formation process?
A) strong winds of particles blowing out into space from a protostar B) powerful "jets" shooting out along the rotation axis of a protostar C) the formation of a spinning disk of material around a protostar D) intense ultraviolet radiation coming from a protostar
As a train starts from rest and then accelerates down the track, coming toward me faster and faster, the speed of the sound waves coming toward me will be:
a. slower than the normal speed of sound in air. b. equal to the normal speed of sound in air. c. some constant speed faster than the normal speed of sound in air. d. faster and faster.