Gravity And The Formation Of Solar Systems Question Preview (ID: 34053)
FCAT Practice Mr. Lewey.
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What is gravity?
a) a force of attraction between objects that is due to their masses
b) an unbalanced force that makes objects move in an elliptical path
c) the rotating cloud of gas and dust from which the sun and planets formed
d) the point in the orbit of a planet at which the planet is farthest from the sun
Which of these choices states Newton’s law of universal gravitation?
a) As a planet moves around its orbit, the planet sweeps out equal areas in equal amounts of time.
b) The orbit of a planet, or other body, around the sun is an ellipse, with the sun at one focus of the ellipse.
c) The square of a planet’s orbital period is proportional to the cube of the planet’s mean distance from the sun.
d) Gravitational force increases as the mass of an object increases or as the distance between two objects decreases.
Chester is creating a timeline of the formation of the solar system. Which flow chart best describes the formation of the solar system?
a) solar nebula ® sun ® planetesimals ® planets
b) solar nebula ® planetesimals ® planets ® sun
c) sun ® solar nebula ® planetesimals ® planets
d) solar nebula ® ® sun ® planets ® planetesimals
The distance between objects, along with the masses of the objects, affect the gravitational force between the objects. Which statement is true according to Newton’s law of universal gravitation?
a) When the masses of objects increase, gravitational force decreases.
b) When distance between objects increases, gravitational force decreases.
c) When distance between objects decreases, gravitational force decreases.
d) When the masses of objects decrease, the distance between objects decreases.
Which term describes a small body from which a planet forms?
a) orbit
b) planetesimal
c) solar nebula
d) protoplanetary disk
Phillip wants to model the formation of a planet. What would his model for a planetesimal look like?
a) a rotating cloud of gas and dust from which the sun and planets formed
b) an elliptical path that a body follows as it travels around another body in space
c) a disk of material surrounding a young star or protostar that may eventually form planets
d) a small body from which a planet originated during the early development of the solar system
From which object did the solar system form?
a) star
b) planetesimal
c) solar nebula
d) protoplanetary disk
What role did gravity play in the formation of the sun?
a) Gravity caused the protoplanetary disk to become a planetesimal, which became the sun.
b) Gravity caused the protoplanetary disk to rotate and form a solar nebula, which became the sun.
c) Gravity caused the solar nebula to collapse toward the center, causing the center to be dense and hot.
d) Gravity caused small particles to collide to form larger particles called planetesimals, which eventually formed the sun.
Cara is explaining to her sister how the solar system formed. Which description would she use to explain the solar nebula?
a) a rotating cloud of dust and gas
b) a disk of material surrounding a young star
c) a small body from which planets form
d) a rocky core surrounded by a deep atmosphere of gas and ice
Who is the greatest teacher in the World?
a) Bill Nye the Science Guy
b) Mr. Lewey
c) Neil Degrasse Tyson
d) Issac Newton
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