Gravity And Galaxies Question Preview (ID: 38641)
Galaxy And Gravity Review.
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A large grouping of stars, gas, and dust held together by gravity
a) Planets
b) Galaxy
c) Universe
d) Nebula
Which galaxy is shaped like a large flat disk, a bulge in the middle, and arms
a) Elliptical
b) Spiral
c) Irregular
d)
Which galaxy is massive collection of stars with a bright round shape
a) Elliptical
b) Spiral
c) Irregular
d)
Which galaxy is a collection of stars, gas, and dust with no specific shape
a) Elliptical
b) Spiral
c) Irregular
d)
Giant cloud of dust and gas; stars may form here
a) Black hole
b) Nebula
c) Constellation
d)
Our solar system is located in the ______________ galaxy
a) Milky Way
b) Capula
c) Orion
d)
Our solar system is located on the outer part of ________________ in the Milky Way galaxy
a) Capricorn's arm
b) Beluga's arm
c) Orion's arm
d)
What do the heliocentric model and the big bang theory have in common?
a) They both describe the nuclear reactions that occur in the interior of a star.
b) They are both ideas that attempt to describe the Universe but that may change with new observations.
c) They are both ideas that attempt to describe the motion of the planets in the Solar System.
d)
Which belief is the basis of Ptolemy's geocentric model of the solar system?
a) The Sun is the center of the universe.
b) Jupiter is the same size as the Earth's moon.
c) The Sun and planets revolve around the Earth.
d)
The Earth, the Sun, and the seven other planets that are in orbit around the Sun are part of the Solar System. How does the size of the Solar System compare with the size of the Milky Way Galaxy?
a) The Solar System is around half the size of the Milky Way Galaxy.
b) The Solar System is much larger than the Milky Way Galaxy.
c) The Solar System is much smaller than the Milky Way Galaxy.
d)
Which type of force holds galaxies together?
a) Andromeda galaxy
b) Milky Way galaxy
c) Ursula galaxy
d)
Our solar system includes the Earth, the Sun, and the seven other planets that are in orbit around the Sun. Which of the following galaxies does our solar system belong to?
a) gravity
b) friction
c) magnetic forces
d)
Which of the following best describes the position of the Sun in the geocentric model?
a) It is at the center of the Milky Way Galaxy.
b) It orbits Earth.
c) It is at the center of the Universe.
d)
Copernicus was the first astronomer to develop a heliocentric model of the Solar System. What is the main idea of heliocentrism?
a) The planets move toward the center of the Universe.
b) The Earth is the center of the Universe.
c) The Sun is the center of the Solar System.
d)
n past centuries, many people believed in a static Universe—one that had existed forever without changing much, and one that would continue forever more or less as it is today. Which of the following facts supports the big bang theory and disproves
a) Most galaxies appear to be moving away from each other.
b) Stars are constantly forming and dying.
c) Stars are held together by gravity within galaxies.
d)
Which of the following theories explains why the Universe is expanding at a great speed?
a) Geocentric theory
b) Heliocentric theory
c) Big Bang theory
d)
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