Unit 4, Astronomy Review: Question Preview (ID: 25307)


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Which explanation of the solar system best fits the observations of the planets and how they began orbiting the sun?
a) The gravity of a large, massive star passing the sun ripped off blobs of material from it that formed the planets. b) The planets formed at the center of a collapsing spinning cloud of gas and dust. c) The sun and planets formed from a collapsing spinning cloud of gas and dust. d) A comet hit the sun and sent off fragments that became the planets.
Which of the following are found in orbit between Mars and Jupiter?
a) comets b) asteroids c) meteors d) meteorites
Which planet is the most massive?
a) Mercury b) Neptune c) Venus d) Jupiter
Which of the following is true for both gas planets and terrestrial planets?
a) They have a core of ice. b) They are a round shape. c) They have rings. d) Their orbits are inside the asteroid belt.
Which type of star may turn into a neutron star or a black hole at the end of its life cycle?
a) red giant b) low-mass star c) medium-mass star d) massive star
Which path is the correct path of light through a reflecting telescope?
a) eyepiece→primary mirror→secondary mirror→eye b) secondary mirror→primary mirror→eye→eyepiece c) primary mirror→eyepiece→secondary mirror→eye d) primary mirror→secondary mirror→eyepiece→eye
Which of the following would you expect to see in the death of a star that is less than 0.5 solar mass?
a) supernova b) white dwarf c) red giant d) planetary nebula
When a sunlike star’s hydrogen runs out, at first it expands into which of the following?
a) a star similar to our sun b) a red giant c) a supergiant d) a white dwarf
Which classification describes the Milky Way?
a) irregular b) regular spiral c) barred spiral d) elliptical
Which of the following describes scientists' best idea about the formation and expansion of the universe?
a) the big bang theory b) elliptical c) expanding universe hypothesis d) red shift hypothesis
How do scientists know that the universe is expanding?
a) The galaxies are moving toward each other, and the temperatures are increasing. b) The galaxies are moving away from each other, and the temperatures are increasing. c) The galaxies are moving toward each other, and the temperatures are decreasing. d) The galaxies are moving away from each other, and the temperatures are decreasing.
During which season and at what latitude does the sun not set?
a) winter and greater than 66°N b) fall and 23° N c) spring and 0° N d) summer and greater than 66° N
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