Astronomy Unit 1 (correct answers)
Astronomy correct answers The study of the origin, nature, and evolution of the
universe and its parts.
Even though astronomy deals with large objects... correct answers Our understanding
of them is rooted in atomic and subatomic physics.
The Astronomical Unit correct answers (AU) ~93,000,000 miles. The distance from the
Earth to the Sun.
Pluto is _______ AU from the sun. correct answers 39 AU.
Speed of Light correct answers 186,000 mi/sec. 3 x 10^8 m/sec
The Light Year correct answers A measure of distance, not speed. The distance light
travels in one year. ~63,000 AU.
Next nearest star to earth is ________. correct answers Proxima Centauri; 4.3 ly from
earth.
The galaxy is ___________ ly across. correct answers 120,000 ly.
The Universe is ~ _____________ly across. correct answers ~10-15 BILLION.
Planets correct answers Relatively small, compared to stars, nonluminous bodies that
orbit stars.
Stars correct answers Big balls of hot gas.
Star Cluster correct answers A grouping of hundreds of thousands of stars that
stretches many light years across.
The Solar System correct answers The sun, its planets, asteroids, comets, etc.
Galaxy correct answers A large system of stars, star clusters, gas, dust orbiting a
common center of gas.
60000000000000000000000000 in scientific notation = correct answers 6.0 x 10^24
Constellation correct answers Fixed patterns of stars used to indicate the positions of
objects in the sky.
How many established constellations? correct answers 88.
Number of brightness that is not visible to the human eye. correct answers 6
Astronomy correct answers The study of the origin, nature, and evolution of the
universe and its parts.
Even though astronomy deals with large objects... correct answers Our understanding
of them is rooted in atomic and subatomic physics.
The Astronomical Unit correct answers (AU) ~93,000,000 miles. The distance from the
Earth to the Sun.
Pluto is _______ AU from the sun. correct answers 39 AU.
Speed of Light correct answers 186,000 mi/sec. 3 x 10^8 m/sec
The Light Year correct answers A measure of distance, not speed. The distance light
travels in one year. ~63,000 AU.
Next nearest star to earth is ________. correct answers Proxima Centauri; 4.3 ly from
earth.
The galaxy is ___________ ly across. correct answers 120,000 ly.
The Universe is ~ _____________ly across. correct answers ~10-15 BILLION.
Planets correct answers Relatively small, compared to stars, nonluminous bodies that
orbit stars.
Stars correct answers Big balls of hot gas.
Star Cluster correct answers A grouping of hundreds of thousands of stars that
stretches many light years across.
The Solar System correct answers The sun, its planets, asteroids, comets, etc.
Galaxy correct answers A large system of stars, star clusters, gas, dust orbiting a
common center of gas.
60000000000000000000000000 in scientific notation = correct answers 6.0 x 10^24
Constellation correct answers Fixed patterns of stars used to indicate the positions of
objects in the sky.
How many established constellations? correct answers 88.
Number of brightness that is not visible to the human eye. correct answers 6
