What makes the surface of Io appear red and orange?
A) sulfur expelled by volcanic eruptions
B) Rocks on the surface were rusted by oxygen.
C) clays on the surface formed in past lakes
D) reflection of Jupiter's light off of sheets of ice
E) Io's thermal spectrum peaks in the red-orange part of the spectrum.
A) sulfur expelled by volcanic eruptions
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A star with an apparent magnitude of 10 is visible by the naked eye.
Answer the following statement true (T) or false (F)
How many turns should a 10-cm long solenoid have if it is to generate a 1.5 × 10-3 T magnetic field on 1.0 A of current?
A) 12 B) 15 C) 120 D) 1200 E) 3200
The ionic bond forms because the atoms involved
A) are naturally ions. B) have spherically symmetric charge distributions. C) are the same. D) all of the above E) none of the above
While we may never be able to prove that our Moon really formed in a giant impact, which of the following would give scientists greater confidence that the model is correct?
a. Creating more sophisticated models of the giant impact that correctly predict many detailed characteristics of the Earth and Moon. b. Smashing together two glass marbles in a laboratory and then gluing the remnants together to make marbles that have the same size ratio as the Earth and Moon. c. Finding evidence that other giant impacts occurred in our solar system, with a total number of impacts consistent with what models of solar system formation lead us to expect. d. Observing evidence of recent giant impacts in other solar systems that are currently in the process of formation. e. Having the giant impact model endorsed by a dozen Nobel prize winners.