Which of the following measurements of other solar systems would require us to change our current solar system formation theory?
A) The age of another solar system is significantly older than our solar system.
B) The planets in other solar systems mostly orbit their central stars in the same plane and same direction as the other planets in that solar system.
C) Some stars have no planets.
D) Some stars have many planets.
E) Many other stars have planets orbiting in many different directions and at many different angles.
E) Many other stars have planets orbiting in many different directions and at many different angles.
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At room temperature, a typical person transfers energy to the surroundings at the rate of 62 W
If this energy transfer has to be made up by an equivalent food intake, how many kilocalories (food calories) does this person need to consume every day just to make up this energy? (1 cal = 4.186 J) A) 1000 kcal B) 1100 kcal C) 1300 kcal D) 1500 kcal E) 1600 kcal
If the 14 billion year history of the universe were compressed to one year, and "now" is exactly midnight December 31, approximately how long ago were your grandparents born?
A) 0.15 second ago B) 1 second ago C) 1 minute ago D) 1 hour ago
The "wispy terrain" on Rhea was revealed by the Cassini spacecraft to be:
A) ice cliffs created by tectonic fractures. B) water ice flows from past impacts that cracked its icy surface. C) the icy ash of water volcanoes. D) "maria" created during the period of high impacts. E) water ice flows from geyser-like activity.
Which of the following is considered by scientists to be physically "real," but yet is not made of atoms or of other material particles such as protons, electrons, etc.?
A) the air B) neutron stars C) electromagnetic fields D) the ether E) Nonsense--we have known since Democritus that everything is made only of atoms and empty space.