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Which of the following images best represents a galaxy?
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
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Which of the following lists celestial bodies in order from smallest to largest?
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
What characteristics are shared by the first four planets in our solar system?
The answer is "They are solid and rocky."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
Which of the following best defines the term "galaxy?"
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
Which of the following terms is defined as, "a ball of hydrogen gas held together by gravity. The central core of is extremely hot and produces energy"?
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
Which of the following is the primary difference between a planet and a moon?
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
Which of the following answer choices is a satellite that orbits a planet and reflects light from a star?
The answer is "a moon" because moons revolve around planets.
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
Where would a new star likely form?
The answer is "in a nebula" because a nebula is a cloud of interstellar dust, hydrogen and helium, the components of star.
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
Which of the following is the best description of the Milky Way Galaxy?
The answer is "a spiral shaped cloud of billions of stars."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
Which of the following lists of objects contains only space objects that reflect light?
The answer is "moons, planets, comets."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
Which of the following images best represents a galaxy?
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
Which of the following lists celestial bodies in order from smallest to largest?
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
What characteristics are shared by the first four planets in our solar system?
The answer is "They are solid and rocky."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
Which of the following best defines the term "galaxy?"
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
Which of the following terms is defined as, "a ball of hydrogen gas held together by gravity. The central core of is extremely hot and produces energy"?
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
Which of the following is the primary difference between a planet and a moon?
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
Which of the following answer choices is a satellite that orbits a planet and reflects light from a star?
The answer is "a moon" because moons revolve around planets.
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
Where would a new star likely form?
The answer is "in a nebula" because a nebula is a cloud of interstellar dust, hydrogen and helium, the components of star.
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
Which of the following is the best description of the Milky Way Galaxy?
The answer is "a spiral shaped cloud of billions of stars."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above
Which of the following lists of objects contains only space objects that reflect light?
The answer is "moons, planets, comets."
Star - A ball of hydrogen gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow.
Planet - a celestial body moving in an elliptical orbit around a star
Solar System - a collection of planets and their moons in orbit around a star, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Galaxy - a system of millions or billions of stars and the solar systems within them, together with gas and dust, held together by gravitational attraction
Compare your answer with the correct one above