Pluto and Dwarf Planets Flashcards Preview

Astronomy > Pluto and Dwarf Planets > Flashcards

Flashcards in Pluto and Dwarf Planets Deck (19):
1

Pluto is considered a _________ planet.

Dwarf

2

The surface temperature of Pluto is 37 degrees Kelvin.

True

3

Beyond Pluto, more dwarf planets are found in this belt:

Kuiper belt

4

How many moons does Pluto have?

5

5

Pluto is considered:

an ice object

6

What is the name of Pluto's largest moon?

Charon

7

Which of the following are dwarf planets?

Pluto
Eris
Ceres

8

How long does it take for Pluto to orbit once around the Sun?

248 years

9

Which of the following gases is not found in Pluto's atmosphere?

Hydrogen

10

Pluto was given its name by:

Venetia Burney

11

A dwarf planet is not considered a regular planet because

It has not cleared the area around its orbit

12

The inclination of Pluto's orbit around the sun is

17 degrees

13

How many officially recognized dwarf planets exist in the solar system?

5

14

Pluto is how much water?

1/3

15

What spacecraft has reached Pluto and its moon, Charon?

New Horizons

16

Of the following dwarf planets, which is not located in the outer Solar System?

Ceres

17

Pluto is sometimes closer to the sun than

Neptune

18

'Planet X' is speculated to be the size of?

Neptune

19

When does Pluto have an atmosphere?

When it is closer to the sun and the heat melts the ice to form an atmosphere primarily made of methane.