# Astronomy college course/Solar system/Quiz

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## AstroWikipSolSys1_Study

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### AstroWikipSolSys1_Study-v1s1

1. Very far from the sun, the heliosphere

___ a) spins in the opposite direction
___ b) reverses direction
___ c) becomes the magnetosphere
___ d) becomes weaker than the interstellar wind
___ e) never ends

2. A volatile is a substance that

___ a) melts or evaporates at high temperature
___ b) reacts violently with water
___ c) reacts violently with acids
___ d) reacts violently with oxygen
___ e) melts or evaporates at low temperature

3. All planets lie within a nearly flat disc called the __________ plane

___ a) ecliptic
___ b) fissile
___ c) angular
___ d) interstellar

4. The AU is

___ a) a measure of the brightness of a planet
___ b) the size of Oort's cloud
___ c) the most distant Kuiper object from the Sun
___ d) the distance from the Sun to Earth
___ e) the distance from Earth to the Moon

5. The Sun and Earth are about

___ a) 50 million years old
___ b) 5 million years old
___ c) 5 billion years old
___ d) 500 million years old
___ e) 50 billion years old

___ a) 150 million years old
___ b) 15 million years old
___ c) 1.5 billion years old
___ d) 15 billion years old
___ e) 150 billion years old

7. Roughly how much bigger is a gas planet than a terrestrial planet?

___ a) 3
___ b) 10
___ c) 100
___ d) 300
___ e) 30

8. Roughly how much bigger is a the Sun than a gas planet?

___ a) 30
___ b) 100
___ c) 10
___ d) 3
___ e) 300

9. According to Wikipedia, if all the mass of the asteroid belt were combined to one object, it's mass would _______ times less than Earth's mass.

___ a) 1,000
___ b) 10,000
___ c) 1
___ d) 10
___ e) 100

10.
planetary disk
In this hypothetical image of a sun-like star we see a bright band of dust that we on Earth call zodiacal light. It is due to sunlight reflecting off dust in the
___ a) Van Allen belt
___ b) Oort Cloude
___ c) magnetic sun's magnetic field
___ d) ecliptic plane
___ e) Kuiper belt

11. In planetary science, the frost line refers to a distance away from

___ a) the south pole of a planet
___ b) the north pole of a planet
___ c) ecliptic plane
___ d) the star in the middle
___ e) either pole of a planet

12. Oort's cloud was hypothesized to explain the source of

___ a) asteroids
___ b) comets
___ c) water outside the frost line
___ d) planets
___ e) water inside the frost line

13. According to Wikipedia _______ and ______ are referred to as volatiles.

___ a) electrons and protons
___ b) acids and bases
___ c) asteroids and terrestrial planets
___ d) planets and moons
___ e) ices and gasses

14. Which of the following list is properly ranked, starting with objects closest to the Sun?

___ a) Asteroid belt, Oort's cloud, Kuiper belt
___ b) Kuiper belt, Oort's cloud, Asteroid belt
___ c) Kuiper belt, Asteroid belt, Oort's cloud
___ d) Asteroid belt, Kuiper belt, Oort's cloud
___ e) Oort's cloud, Asteroid belt, Kuiper belt

15. When the sun turns into a red giant,

___ a) surface temperature decreases; energy output increases
___ b) surface temperature increases; energy output increases
___ c) surface temperature increases; energy output decreases
___ d) The sun will not turn into a red giant
___ e) surface temperature decreases; energy output decreases

#### Key to AstroWikipSolSys1_Study-v1s1

1. Very far from the sun, the heliosphere

- a) spins in the opposite direction
- b) reverses direction
- c) becomes the magnetosphere
+ d) becomes weaker than the interstellar wind
- e) never ends

2. A volatile is a substance that

- a) melts or evaporates at high temperature
- b) reacts violently with water
- c) reacts violently with acids
- d) reacts violently with oxygen
+ e) melts or evaporates at low temperature

3. All planets lie within a nearly flat disc called the __________ plane

+ a) ecliptic
- b) fissile
- c) angular
- d) interstellar

4. The AU is

- a) a measure of the brightness of a planet
- b) the size of Oort's cloud
- c) the most distant Kuiper object from the Sun
+ d) the distance from the Sun to Earth
- e) the distance from Earth to the Moon

5. The Sun and Earth are about

- a) 50 million years old
- b) 5 million years old
+ c) 5 billion years old
- d) 500 million years old
- e) 50 billion years old

- a) 150 million years old
- b) 15 million years old
- c) 1.5 billion years old
+ d) 15 billion years old
- e) 150 billion years old

7. Roughly how much bigger is a gas planet than a terrestrial planet?

- a) 3
+ b) 10
- c) 100
- d) 300
- e) 30

8. Roughly how much bigger is a the Sun than a gas planet?

- a) 30
- b) 100
+ c) 10
- d) 3
- e) 300

9. According to Wikipedia, if all the mass of the asteroid belt were combined to one object, it's mass would _______ times less than Earth's mass.

+ a) 1,000
- b) 10,000
- c) 1
- d) 10
- e) 100

10.
planetary disk
In this hypothetical image of a sun-like star we see a bright band of dust that we on Earth call zodiacal light. It is due to sunlight reflecting off dust in the
- a) Van Allen belt
- b) Oort Cloude
- c) magnetic sun's magnetic field
+ d) ecliptic plane
- e) Kuiper belt

11. In planetary science, the frost line refers to a distance away from

- a) the south pole of a planet
- b) the north pole of a planet
- c) ecliptic plane
+ d) the star in the middle
- e) either pole of a planet

12. Oort's cloud was hypothesized to explain the source of

- a) asteroids
+ b) comets
- c) water outside the frost line
- d) planets
- e) water inside the frost line

13. According to Wikipedia _______ and ______ are referred to as volatiles.

- a) electrons and protons
- b) acids and bases
- c) asteroids and terrestrial planets
- d) planets and moons
+ e) ices and gasses

14. Which of the following list is properly ranked, starting with objects closest to the Sun?

- a) Asteroid belt, Oort's cloud, Kuiper belt
- b) Kuiper belt, Oort's cloud, Asteroid belt
- c) Kuiper belt, Asteroid belt, Oort's cloud
+ d) Asteroid belt, Kuiper belt, Oort's cloud
- e) Oort's cloud, Asteroid belt, Kuiper belt

15. When the sun turns into a red giant,

+ a) surface temperature decreases; energy output increases
- b) surface temperature increases; energy output increases
- c) surface temperature increases; energy output decreases
- d) The sun will not turn into a red giant
- e) surface temperature decreases; energy output decreases