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Dwarf Planets Quiz Answer key 1) Which of the following are characteristics of dwarf planets? a) orbits a star b) does not orbit a planet c) is spherical – can be nearly spherical or spherical d) all of the above e) a and b, but not c 2) Scientists thought Pluto was a larger celestial body until the quality of telescopes improved and they discovered its moon Charon. a) true b) false 3) Which of the following are characteristics of a planet? a) orbits a star b) is nearly spherical – must be spherical c) has sufficient gravity to clear the area of its orbit of smaller objects. d) all of the above e) a and c, but not b 4) Place the following dwarf planets in order from furthest from the Sun to nearest: Eris, Pluto, Ceres, Wakewake, Haumea. Eris, Makemake, Haumea, Pluto, Ceres 5) Pluto is… a) icy and rocky. th b) 1/5 the mass of Earth’s Moon. c) surrounded in a thick cloud of methane. d) all of the above e) a and b, but not c 6) Scientists are still looking for more dwarf planets. a) true b) false 7) Haumea… a) is oval shaped. b) is orbited by two moons. c) rotates completely on its axis every 4 hours. d) all of the above e) a and c, but not b 8) Eris is the largest dwarf planet in our solar system. a) true b) false 9) Makemake… a) orbits the Sun once every 310 years. b) is made of ices of methane (CH4), ethane (C2H6), and nitrogen (N). c) has an elliptical orbit. d) all of the above e) a and b, but not c 10) Pluto is sometimes closer to the Sun than _Neptune_ is.