Sort each statement below into the appropriate bin based on whether it is something that scientists knew about Pluto or its moon Charon before the New Horizons flyby, is something learned as a result of the New Horizons flyby, or is something that seems possible from the New Horizons mission but for which we'll need additional data to establish it with certainty.
What will be an ideal response?
Answer:
Known prior to New Horizons mission:
-Pluto is less massive than any of the terrestrial planets
-Pluto is a member of the Kuiper beltPluto is sometimes nearer to the Sun than Neptune
-Pluto has a comet-like composition of ice and rock
Learned from New Horizons mission:
-Charon has huge, deep canyons
-Pluto's thin atmosphere contains haze particles that can fall to the surface
-Pluto has tall mountains built of water icePluto has smooth plains of nitrogen ice
Possible but not proven from New Horizons mission:
-Pluto has a subsurface ocean of liquid water
-Pluto has active volcanoes
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What is left when a planetary nebula dissipates?
A. a neutron star B. a black hole C. a red giant D. a white dwarf
What are the three main atmospheric lifting mechanisms?
What will be an ideal response?
A 5.0-m radius playground merry-go-round with a moment of inertia of 2000 kg?m2 is rotating freely with an angular speed of 1.0 rad/s
Two people, each having a mass of 60 kg are standing right outside the edge of the merry-go-round and step on it with negligible speed. What is the angular speed of the merry-go-round right after the two people have stepped on? A) 0.20 rad/s B) 0.40 rad/s C) 0.60 rad/s D) 0.80 rad/s E) 0.67 rad/s
The greatest redshifts yet observed for quasars is about
A) 0.1. B) 0.7. C) 1.4. D) 7.0. E) 14.0.