Pluto

What is a dwarf planet? A. It "is a body that orbits the Sun and is massive enough for its gravity to have pulled it into a spherical shape, but not so massive that it has cleared the region around its orbit of smaller bodies" (page 107). B. It "is an 'outer asteroid belt' of sorts [...]" (page 107). C. It is "an invisible stream of matter and radiation escaping from the sun" (page 113). D. It is "a large cloud of interstellar dust and gas [...]" (page 120).

A. It "is a body that orbits the Sun and is massive enough for its gravity to have pulled it into a spherical shape, but not so massive that it has cleared the region around its orbit of smaller bodies" (page 107).

What is the average density of Pluto? A. 2500 kg/m3 B. 0.0021 kg/m3 C. 2000 kg/m3 D. 0.02 kg/m3

C. 2000 kg/m3

How many moons does Pluto have (that we've found)?A. 3 B. 4 C. 5 D. 6

C. 5

Which of Pluto's moons is the largest?A. NixB. HydraC. CharonD. Styx

C. Charon

Which of the following is not a characteristic of a dwarf planet? A. It orbits the Sun B. It is a spherical shape C. It is a satellite (a moon) D. It has not cleared the neighborhood of its orbit

C. It is a satellite (a moon)

T/F A dwarf planet is a a body that orbits the Earth, and is massive enough to clear the region around its orbit of smaller bodies.

False

Pluto is mainly made up of what? A. Ice B. Rock C. Gas D. Lava E. None of the above

A. Ice

What is Pluto's mass? A. 0.0021 Earth's B. 0.21 Earth's C. -0.0021 Earth's D. -0.21Earth's

C. -0.0021 Earth's

Which answer choice is NOT true about Pluto? A. Pluto is the largest dwarf planet. B. Pluto has five known moons. C. Pluto is one third water D. Pluto is the same size as Saturn

D. Pluto is the same size as Saturn

Which of the following is true about Pluto? A.Pluto has no known moons B.Pluto is the smallest dwarf planet C. Pluto is 1/3 water D.Pluto has never been visited by a space craft E.Pluto was discovered in the year 1720

D.Pluto has never been visited by a space craft

True or False: Pluto is only about half the width of the United States, making it the smallest planet in the vicinity of our solar system.

True

True or FalseThe discovery of Eris (Kuiper belt object) was a major factor in Pluto's demotion from major planet status in 2006.

True

t/F Due to its elliptical orbit, Pluto sometimes gets closer to the Sun than Neptune does.

true