What would happen if the fusion rate in the core increased but the core could not expand?
A) The Sun's core would heat and the rate of fusion would increase further.
B) The Sun's core would reach a new equilibrium, but at a cooler temperature.
C) The Sun's core would reach a new equilibrium, but at a higher temperature.
D) The Sun's core would cool and the rate of fusion would decrease.
A
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While you are standing in the aisle of a bus, the driver suddenly makes a left turn. You lurch to the right due to
A) an unbalanced force. B) your tendency to keep moving forward. C) an equilibrium challenge.
From laboratory measurements, we know that a particular spectral line formed by hydrogen appears at a wavelength of 121.6 nanometers (nm). The spectrum of a particular star shows the same hydrogen line appearing at a wavelength of 121.8 nm
What can we conclude? A) The star is moving toward us. B) The star is moving away from us. C) The star is getting hotter. D) The star is getting colder. E) The "star" actually is a planet.
What is the scientific community's view of the scientific value of astrology?
A) It is unscientific, because its practitioners do not understand the principles of physics or astronomy. B) It is unscientific, because its predictions have been shown to be incorrect. C) Even though its predictions are occasionally inaccurate, it does deserve to be classified as a true science. D) It is unscientific, because it does not support its theories with clear and verifiable predictions about observations. E) It is scientific, even though it is not related to the "real world" of observed phenomena.
The horizontal movement of air is called
a. an anticyclone. b. wind. c. air currents. d. a hurricane.