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Questions and answers by visitors named
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Questions (1)
How are asteroids and comets similar?(1 point)
Responses Both orbit the sun. Both orbit the sun. Both are composed of gases. Both
28 answers
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Answers (14)
Which inference can be made from the spectrum readings? (1 point) Responses There is a red shift, which means that the star is moving toward the sun. There is a red shift, which means that the star is moving toward the sun. There is a blue shift, which
Which theory of how the universe formed is best supported by evidence of radio waves detected in space?(1 point) Responses big crunch theory big crunch theory big bang theory big bang theory heliocentric model heliocentric model steady state theory
“While the big bang theory is the most popular modern theory of how the universe formed, it is incomplete.” Which question does the big bang theory leave unanswered? (1 point) Responses How did galaxies and stars form? How did galaxies and stars form?
What caused people to accept the geocentric model of the universe?(1 point) Responses Noticing the gravity will eventually pull all the planets and the universe back together. Noticing the gravity will eventually pull all the planets and the universe back
Which ideas describe the big crunch?(1 point) Responses The big bang actually never occurred, and the universe must have a different origin. The big bang actually never occurred, and the universe must have a different origin. After the universe reaches its
What triggered the cyclic model of the origin of the universe?(1 point) Responses Some scientists began to use telescopes and mathematics to study the universe. Some scientists began to use telescopes and mathematics to study the universe. Some scientists
Blueshift is observed when(1 point) Responses a luminous object travels alongside an observer. a luminous object travels alongside an observer. a luminous object is stationary compared to an observer. a luminous object is stationary compared to an
A spiral galaxy can be described as what type of shape?(1 point) Responses no distinct shape no distinct shape oval oval pinwheel pinwheel triangular
What lies at the center of the Milky Way galaxy?(1 point) Responses the sun the sun Earth Earth a black hole a black hole North Star North Star
Which is the first stage in the life cycle of a massive star?(1 point) Responses red giant red giant nebula nebula white drawf white drawf black hole
Which is the last stage in the life cycle of an average star?(1 point) Responses neutron star neutron star planetary nebula planetary nebula super red giant super red giant white drawf
What determines whether a star will end its life cycle as a black hole or neutron star or as a white dwarf? (1 point) Responses the temperature of the star the temperature of the star the age of the star the age of the star the mass of the star the mass of
What can spectroscopes tell us about a space object?(1 point) Responses determine temperature, chemical composition, and speed determine temperature, chemical composition, and speed determine temperature, chemical composition, and size determine
At certain times of the year, five planets can be seen from Earth, including Mars and(1 point) Responses Neptune. Neptune. Juno. Juno. Saturn. Saturn. Uranus.
