Formation of Galaxies Quiz Review

How much matter is in an object, which affects the gravitational force of the object

• Gravitational force

• Force

• Mass

• Weight

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Why do the planets and other celestial objects in our solar system revolve around the Sun?

• The Sun has the greatest mass of any object in the solar system and therefore the greatest gravity

• The sun is the center of the universe

• The sun is the brightest thing in space and everything is attracted to it.

• The Sun has the greatest weight so everything pushes towards it

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Which of the following best describes the formation of the solar system?

• The Sun ejected rocky material which formed the planets due to magnetic attraction forces.

• A rotating disk of gas and dust was drawn together by the force of gravity.

• One very large planetary body broke apart into several smaller planets.

• Several stars of different masses cooled and formed the planets and the Sun.

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Earth and its solar system are a part of which of the following galaxies?

• Three Musketeers

• Snickers

• Twix

• Milky Way

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What force played a major role in the formation of the solar system?

• Magnetism

• Push

• Pull

• Gravity

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What is the Big Bang Theory?

• Two giant stars hit each other and exploded.

• The universe started as a hot, dense point in space that is rapidly expanding.

• The universe got too big, exploded, and started over.

• None of the above

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Students are making a model of planetary motion. The students tie a tennis ball to a string. The string passes through a spool and is attached to a 1 kilogram mass.

The mass pulls down on the string as the students spin the tennis ball around the spool. If the students wish to change the model to show what would happen if the sun had a greater gravitational pull, what change should they make?

• Spin the tennis ball at an increased speed

• Replace the 1 kg mass with a 2 kg mass

• Tie the tennis ball with a longer string

• Change the spool to a longer one

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A galaxy shaped like a round or flattened ball, generally the largest galaxies are these types

• elliptical galaxy

• spiral galaxy

• irregular galaxy

A collection of stars, dust, and gas bound together by gravity

• nebulae

• galaxies

• solar system

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A galaxy that has an undefined shape, some scientist believe the shape is disorganized due to the gravitational pull of other nearby galaxies

• spiral galaxy

• irregular galaxy

• elliptical galaxy

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