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Flashcards on Astronomy: Solar System Formation
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What is the Solar System?
The Solar System is a group of celestial bodies including the Sun, planets, moons, asteroids, and comets.
How did the Solar System form?
The Solar System formed from a giant molecular cloud consisting of gas and dust that collapsed under its own gravity.
What is the protoplanetary disk?
The protoplanetary disk is a rotating disk of gas and dust surrounding a young star, from which planets are formed.
How are planets formed?
Planets are formed through a process called accretion, where small particles collide and stick together to form larger objects.
What is a nebula?
A nebula is a cloud of gas and dust in space, often formed from the remnants of a dying star.
What is a supernova?
A supernova is a powerful explosion that occurs when a massive star reaches the end of its life cycle.
What is the role of gravity in the formation of the Solar System?
Gravity played a crucial role in the formation of the Solar System by bringing together gas and dust particles.
How old is the Solar System?
The Solar System is approximately 4.6 billion years old.
What are the inner planets of the Solar System?
The inner planets of the Solar System are Mercury, Venus, Earth, and Mars.
What are the outer planets of the Solar System?
The outer planets of the Solar System are Jupiter, Saturn, Uranus, and Neptune.
What are asteroids?
Asteroids are rocky objects that orbit the Sun, primarily found in the asteroid belt between Mars and Jupiter.
What are comets?
Comets are icy bodies that orbit the Sun, often characterized by a glowing coma and a tail.
What is the Kuiper Belt?
The Kuiper Belt is a region of the Solar System beyond Neptune that contains many small icy objects.
What is the Oort Cloud?
The Oort Cloud is a hypothetical cloud of icy objects that is believed to surround the Solar System.
What is a planetesimal?
A planetesimal is a small building block of a planet that forms through the process of accretion.
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Test Your Knowledge
What is the Solar System?
A group of galaxies
A group of celestial bodies including the Sun, planets, moons, asteroids, and comets
A group of stars in the Milky Way
A group of planets only
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How did the Solar System form?
From a giant volcanic eruption
From a giant molecular cloud that collapsed under its own gravity
From a collision between two galaxies
From a comet impact
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What is a nebula?
A cloud of gas and dust in space
A small rocky planet
A type of star
A large asteroid
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What is the role of gravity in the formation of the Solar System?
Gravity has no role in the formation of the Solar System
Gravity brought together gas and dust particles to form celestial bodies
Gravity caused the explosion of a star
Gravity is responsible for Earth's seasons
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How old is the Solar System?
100 million years
Approximately 4.6 billion years
10,000 years
1 billion years
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What are the inner planets of the Solar System?
Saturn, Uranus, Neptune
Mercury, Venus, Earth, Mars
Jupiter, Saturn, Uranus, Neptune
Earth, Mars, Jupiter, Saturn
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What are the outer planets of the Solar System?
Jupiter, Saturn, Uranus, Neptune
Mercury, Venus, Earth, Mars
Saturn, Uranus, Neptune
Earth, Mars, Jupiter, Saturn
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What are asteroids?
Icy bodies that orbit the Sun
Rocky objects that orbit the Sun
Celestial bodies between Mars and Jupiter
A type of planet
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What are comets?
Rocky objects that orbit the Sun
Icy bodies that orbit the Sun
Celestial bodies between Mars and Jupiter
A type of star
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What is the Kuiper Belt?
A region of the Solar System beyond Neptune that contains many small icy objects
A hypothetical cloud of icy objects that surrounds the Solar System
A rotating disk of gas and dust surrounding a young star
A cloud of gas and dust in space
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