Suppose that large jovian planets had never formed in our solar system. Which of the following would most likely be true?
A) There would be a large empty region in our solar system between the orbit of Mars and the Kuiper belt.
B) Earth would orbit much closer to the Sun.
C) Neither the asteroid belt nor Oort cloud would exist.
D) Earth would have suffered far fewer impacts.
C
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Suppose a large flare is detected optically. How long until radio interference arrives?
A) simultaneously B) 8.5 minutes later C) about 12 hours D) about four days E) no relation between the two
A plasma state of matter is
a. a conducting solid. b. a part of the blood. c. an ionized gas. d. a conducting liquid. e. none of the above.
On some early automobiles both headlights failed when one bulb burned out. The headlights were likely connected in
A) parallel. B) perpendicular. C) series. D) haste.
Why is hydrogen less obvious in B stars than in A class?
What will be an ideal response?