Podcast
Questions and Answers
Which of the following best describes the primary difference between a planet and a plutoid?
Which of the following best describes the primary difference between a planet and a plutoid?
- A planet orbits a moon, while a plutoid orbits the Sun.
- A planet has cleared its orbit of other debris, while a plutoid has not. (correct)
- A planet is found in the asteroid belt, while a plutoid is found in the Kuiper Belt.
- A planet is made of gas, while a plutoid is rocky.
A nebula is a type of galaxy.
A nebula is a type of galaxy.
False (B)
What is the defining characteristic of a star?
What is the defining characteristic of a star?
A massive, luminous sphere of plasma held together by gravity.
A small celestial body made of ice, dust, and rocky material that develops a glowing coma and tail when near the Sun is called a ______.
A small celestial body made of ice, dust, and rocky material that develops a glowing coma and tail when near the Sun is called a ______.
Match the celestial body with its description:
Match the celestial body with its description:
Which of the following celestial bodies is primarily composed of ice and dust?
Which of the following celestial bodies is primarily composed of ice and dust?
The Sun is an example of a planet.
The Sun is an example of a planet.
Where is the asteroid belt located?
Where is the asteroid belt located?
The path one object takes around another object in space is called an ______.
The path one object takes around another object in space is called an ______.
Which of these is an example of a galaxy?
Which of these is an example of a galaxy?
Flashcards
Solar System
Solar System
The collection of planets and other celestial bodies that orbit the Sun.
Planet
Planet
A large celestial body that orbits a star.
Moon
Moon
A natural satellite that orbits a planet.
Star
Star
A massive ball of gas that emits light and heat.
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Orbit
Orbit
The path one object takes around another object in space.
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Asteroid
Asteroid
A small rocky body that orbits the Sun, primarily found in the asteroid belt.
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Plutoid
Plutoid
A celestial body similar to a planet but does not dominate its orbit; usually icy and found in the Kuiper Belt.
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Comet
Comet
A small celestial body made of ice, dust, and rocky material that develops a glowing coma and tail when near the Sun.
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Nebula
Nebula
A giant cloud of dust and gas in space, often the birthplace of stars.
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Galaxy
Galaxy
A vast system of stars, gas, dust, and dark matter, bound together by gravity.
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- The solar system is a collection of celestial bodies orbiting the Sun.
- A planet is a large celestial body orbiting a star.
- A moon is a natural satellite orbiting a planet.
- A star is a massive ball of gas emitting light and heat.
- An orbit is the path an object takes around another in space.
Key Terms
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Star
- A massive, luminous sphere of plasma held together by gravity.
- Example: The Sun.
-
Planet
- A celestial body that orbits a star, is spherical, and has cleared its orbit of debris.
- Example: Earth and Mars.
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Moon
- A natural satellite that orbits a planet.
- Example: Earth's Moon.
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Asteroid
- A small, rocky body orbiting the Sun, mainly in the asteroid belt.
- Example: Ceres.
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Plutoid
- A celestial body similar to a planet but does not dominate its orbit; usually icy and found in the Kuiper Belt.
- Example: Pluto.
-
Comet
- A small celestial body of ice, dust, and rock that develops a glowing coma and tail near the Sun.
- Example: Halley's Comet.
-
Nebula
- A giant cloud of dust and gas in space, often where stars are born.
- Example: Orion Nebula.
-
Galaxy
- A vast system of stars, gas, dust, and dark matter, bound by gravity.
- Example: Milky Way.
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