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Because of both gravity and centripetal force, planets move in a particular manner around the sun. Which term describes the shape of the orbit of a planet?
Earth as a reference point
Mercury
365 1/4
Gravity caused the solar nebula to collapse toward the center, causing the center to be dense and
ellipse
The moon is much closer to Earth than the sun.
hydrogen
gravity
The sun is much larger than the moon. However, as viewed from Earth, the sun and moon appear to be the same size. Why do the sun and moon appear to be the same size when viewed
Earth as a reference point
Mercury
365 1/4
Gravity caused the solar nebula to collapse toward the center, causing the center to be dense and
ellipse
The moon is much closer to Earth than the sun.
hydrogen
gravity
The terrestrial planets include Mars, Venus, Earth, and which other planet?
Earth as a reference point
Mercury
365 1/4
Gravity caused the solar nebula to collapse toward the center, causing the center to be dense and
ellipse
The moon is much closer to Earth than the sun.
hydrogen
gravity
What role did gravity play in the formation of the sun?
Earth as a reference point
Mercury
365 1/4
Gravity caused the solar nebula to collapse toward the center, causing the center to be dense and
ellipse
The moon is much closer to Earth than the sun.
hydrogen
gravity
Which of these terms describes a force of attraction between two objects that results from their masses?
Earth as a reference point
Mercury
365 1/4
Gravity caused the solar nebula to collapse toward the center, causing the center to be dense and
ellipse
The moon is much closer to Earth than the sun.
hydrogen
gravity
The length of a year is different for each planet in the solar system. How many days are in an Earth year?
Earth as a reference point
Mercury
365 1/4
Gravity caused the solar nebula to collapse toward the center, causing the center to be dense and
ellipse
The moon is much closer to Earth than the sun.
hydrogen
gravity
The pie graph to the right shows the elements that make up the Sun, by percentages of mass. Which element makes up most of the Sun’s mass?
Earth as a reference point
Mercury
365 1/4
Gravity caused the solar nebula to collapse toward the center, causing the center to be dense and
ellipse
The moon is much closer to Earth than the sun.
hydrogen
gravity
Many historical models of the Solar System were geocentric. Which of these phrases describes a geocentric solar system?
Earth as a reference point
Mercury
365 1/4
Gravity caused the solar nebula to collapse toward the center, causing the center to be dense and
ellipse
The moon is much closer to Earth than the sun.
hydrogen
gravity
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