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- Multiple ChoicePlease save your changes before editing any questions.
Models of the solar system with Earth at the center are called _____________________ models.
geocentric
heliocentric
terrestrial
none of the above
- Multiple ChoicePlease save your changes before editing any questions.
Models of the solar system with Sun at the center are called _____________________ models.
geocentric
heliocentric
terrestrial
none of the above
- Multiple ChoicePlease save your changes before editing any questions.
How many known planets are in our solar system?
4
7
8
9
- Multiple ChoicePlease save your changes before editing any questions.
What dwarf planet was downgraded from planetary status in 2006?
Mercury
Uranus
Neptune
Pluto
- Multiple ChoicePlease save your changes before editing any questions.
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.
- Multiple ChoicePlease save your changes before editing any questions.
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.
- Multiple ChoicePlease save your changes before editing any questions.
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.
- Multiple ChoicePlease save your changes before editing any questions.
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∘.
- Multiple ChoicePlease save your changes before editing any questions.
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.
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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.
- Multiple ChoicePlease save your changes before editing any questions.
Identify the phase of the moon in picture 2
Waxing Gibbous
Waning Crescent
Waxing Cresent
Waning Gibbous
- Multiple ChoicePlease save your changes before editing any questions.
Identify the phase of the moon in picture 9
Waxing Gibbous
Waning Crescent
Waxing Cresent
Waning Gibbous
- Multiple ChoicePlease save your changes before editing any questions.
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.
- Multiple ChoicePlease save your changes before editing any questions.
Because Pluto has not cleared its orbital path of debris, it was reclassified from a planet to a . . .
asteroid.
meteor.
moon.
dwarf planet.
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The astronomer _______________________ first proposed that Earth and the other planets orbit the sun.
Copernicus.
Einstein.
Kepler.
Newton.