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- 1. Multiple Choice
Models of the solar system with Earth at the center are called _____________________ models.
geocentric
heliocentric
terrestrial
none of the above
- 2. Multiple Choice
Models of the solar system with Sun at the center are called _____________________ models.
geocentric
heliocentric
terrestrial
none of the above
- 3. Multiple Choice
How many known planets are in our solar system?
4
7
8
9
- 4. Multiple Choice
What dwarf planet was downgraded from planetary status in 2006?
Mercury
Uranus
Neptune
Pluto
- 5. Multiple Choice
According to the nebular theory, did the planets start forming before or after the Sun ignited?
The planets started forming during the time the Sun ignited.
The planets started forming before the Sun ignited.
The planets started forming after the Sun ignited.
- 6. Multiple Choice
What happens to the amount of the Sun's mass as it "burns"?
The mass of the Sun is constant.
It is converted into kinetic energy of the Sun.
It is converted into radiant energy.
It is converted into gravitational energy.
- 7. Multiple Choice
What is the age of the Sun?
Nearly 5 billion years old.
Nearly 500 million years old.
Nearly 1 billion years old.
Nearly 10 billion years old.
- 8. Multiple Choice
Where is the Sun located when you view a full Moon?
During a full Moon, the Sun, Earth, and the Moon are lined up, with Earth in between.
During a full Moon, the Sun, the Moon, and Earth are lined up, with the Moon in between.
During a full Moon, the Moon, the Sun, and Earth are lined up, with the Sun in between.
During a full Moon, the angle between the Sun, the Moon, and Earth is 90∘.
- 9. Multiple Choice
Why don't eclipses occur monthly, or nearly monthly?
Eclipses occur each time when the Moon is located at the intersection of the Moon's orbital plane and Earth's orbital plane, which is relatively rare event.
Eclipses occur only when the Moon is located at the intersection of the Moon's orbital plane and Earth's orbital plane, and the angle between the Sun, the Moon, and Earth is 90∘, which is relatively rare event.
Eclipses occur only when the Moon is located at the intersection of the Moon's orbital plane and Earth's orbital plane, and the Sun is located on the same line with Earth and the Moon, which is relatively rare event.
None of the above.
- 10. Multiple Choice
Between the orbits of what two planets is the asteroid belt located?
The asteroid belt is located between the orbits of Earth and Mars.
The asteroid belt is located between the orbits of Jupiter and Saturn.
The asteroid belt is located between the orbits of Saturn and Uranus.
The asteroid belt is located between the orbits of Mars and Jupiter.
- 11. Multiple Choice
Identify the phase of the moon in picture 2
Waxing Gibbous
Waning Crescent
Waxing Cresent
Waning Gibbous
- 12. Multiple Choice
Identify the phase of the moon in picture 9
Waxing Gibbous
Waning Crescent
Waxing Cresent
Waning Gibbous
- 13. Multiple Choice
The nebular hypothesis explains
why the planets are spherical in shape.
why the solar system is in a flattened disk.
how the sun and planets formed from a cloud of gas and dust.
all of the above.
- 14. Multiple Choice
Because Pluto has not cleared its orbital path of debris, it was reclassified from a planet to a . . .
asteroid.
meteor.
moon.
dwarf planet.
- 15. Multiple Choice
The astronomer _______________________ first proposed that Earth and the other planets orbit the sun.
Copernicus.
Einstein.
Kepler.
Newton.
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