Formation of the Solar System and Related Concepts

What is the Nebular Theory and what does it explain about the formation of our solar system?

• It explains the formation of stars.

• It describes the lifecycle of a planet.

• It explains the formation of the solar system from a cloud of gas and dust.

• It describes the process of nuclear fusion.

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Explain the process of nuclear fusion within stars.

• It involves the splitting of atomic nuclei.

• It is the process of combining lighter atomic nuclei to form a heavier nucleus.

• It is the cooling of stars over time.

• It is the process of stars losing mass.

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Why are gas giants typically found farther from the star in a solar system?

• They are formed from heavier elements.

• They are attracted to the star's heat.

• They form in cooler regions where ice can condense.

• They are smaller in size.

Define the term "rotation" as it applies to Earth.

• The movement of Earth around the Sun.

• The spinning of Earth on its axis.

• The orbit of the Moon around Earth.

• The tilt of Earth's axis.

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What causes day and night on Earth?

• Earth's orbit around the Sun.

• The tilt of Earth's axis.

• Earth's rotation on its axis.

• The movement of the Moon.

Earth's orbit around the Sun is

• a perfect circle.

• an elliptical path.

• a straight line.

• a spiral path.

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What is the significance of Earth being tilted on its axis?

• It causes the equatorial bulge.

• It results in the changing seasons.

• It affects the length of a day.

• It causes the tides.

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How does the tilt of Earth's axis affect the seasons?

• It causes the equator to receive more sunlight.

• It results in equal day and night throughout the year.

• It causes different parts of Earth to receive varying amounts of sunlight.

• It has no effect on the seasons.

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What is an equinox and when do they occur?

• When the Sun is closest to Earth, occurring in January and July.

• When day and night are of equal length, occurring in March and September.

• When the Sun is farthest from Earth, occurring in June and December.

• When the Moon is full, occurring monthly.

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Explain the difference between a solstice and an equinox.

• Solstice is when the Sun is directly over the equator; equinox is when it is over the poles.

• Solstice is when day and night are equal; equinox is when they are unequal.

• Solstice is when the Sun is at its highest or lowest point; equinox is when day and night are equal.

• Solstice occurs monthly; equinox occurs yearly.

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