Which states Newton's law of universal gravitation?

Force increases as mass increases or as distance decreases.

Which statement is true according to Newton's law of universal gravitation?

When distance between increases, grav. force decreases.

force of attraction between objects is due to their masses

Which statement is true about gas giants?

contain gases & ices, far from sun, materials can condense

Which order best describes the formation of the solar system?

nebula/protostellar disk/fusion/sun/planetesimals/planets

Which statement best describes centripetal force?

unbalanced force, makes objects travel in an elliptical path

What role did gravity play in the formation of the sun?

caused the nebula to collapse toward the center/heating it

Which states Kepler's first law of planetary motion?

The orbit of a planet is an ellipse with the sun as a focus.

What would a model for a planetesimal look like?

small body that develops into a planet early in solar system

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Gravity and the Solar System

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8th grade science

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Questions 25

Answers

1
Which term describes the shape of the orbit of a planet?
perihelion
ellipse
circle
sphere
2
The diagram shows a solar nebula. Where is a terrestrial planet most likely to form?
2
3
1
4
3
Which states Newton's law of universal gravitation?
Force increases as mass increases or as distance decreases.
p2 = a3
A planet's orbit is an ellipse with the sun at one focus.
A planet in orbit covers equal areas in equal amts. of time.
4
Which statement is true according to Newton's law of universal gravitation?
When masses increase, gravitational force decreases.
When distance between decreases, grav. force decreases.
When the masses decrease, the distance between decreases,
When distance between increases, grav. force decreases.
5
The diagram shows which law?
law of universal gravitation
Kepler's 1st law
Kepler's 2nd law
Kepler's 3rd law
6
What is gravity?
rotating cloud of dust and gas from which sun & planets form
point in object's orbit farthest from the sun
force of attraction between objects is due to their masses
unbalanced force that makes objects move in elliptical path
7
Calculations demonstrate (orbital period)² is proportional to (mean distance to sun)³. Law?
Kepler's Third Law
Kepler's Second Law
Newton's Law of Universal Gravitation
Kepler's First Law
8
Which stage came first in the formation of the solar system?
terrestrial planet
solar nebula
nuclear fusion
protoplanetary disk
9
Which statement is true about gas giants?
form close to the sun to contain deep, gaseous atmospheres
contain no rock or metals; too cold for them to condense
have gaseous cores and rocky surfaces; too cold to condense
contain gases & ices, far from sun, materials can condense
10
Which term best describes the shape of the orbits of planets in our solar systems?
circular
elliptical
spherical
centripetal
11
At which point in Earth's orbit is the planet closest to the sun?
perihelion
elliptical
planetesimal
aphelion
12
What stage in solar system formation is shown in the diagram below?
solar nebula
sun
planets
planetesimals
13
What description could be used to explain the solar nebula?
rocky core surrounded by deep atmosphere of gas & ice
rotating cloud of dust and gas
small body from which a planet originates
disk of material surrounding a young star
14
Which stage came latest in the formation of the solar system?
protoplanetary disk
terrestrial planet
planetesimal
protostar
15
The mean distance is 0.387 AU. Use p²= a³ to determine the orbital period in Earth years.
0.5311 Earth yrs
0.0598 Earth yrs
0.2407 Earth yrs
1.0775 Earth yrs
16
From which object did the solar system form?
planetesimal
solar nebula
protoplanetary disk
star
17
According to Kepler's 1st law, which object must be located at point 1 in the diagram?
Earth
the sun
Venus
the moon
18
Which order best describes the formation of the solar system?
nebula/protostellar disk/fusion/planetesimals/planets/sun
protostellar disk/fusion/sun/nebula/planetesimals/planets
nebula/protostellar disk/fusion/sun/planetesimals/planets
nebula/fusion/sun/planets/planetesimals/protostellar disk
19
Which term describes a small body from which a planet forms?
solar nebula
planetesimal
protoplanetary disk
orbit
20
Which statement best describes centripetal force?
unbalanced force, makes objects travel in an elliptical path
point in object's orbit at which object is closest to sun
force of attraction between objects, result of their masses
path a body follows as it travels around another body
21
Which configuration will result in the greatest gravitational force? Use the diagram below.
small masses far apart
large masses close together
small masses close together
large masses far apart
22
What role did gravity play in the formation of the sun?
caused small particles to collide to form planetesimals
It caused the protoplanetary disk to become a planetesimal.
It caused the protoplanetary disk to rotate & form a nebula
caused the nebula to collapse toward the center/heating it
23
Which describes a force of attraction between 2 objects that results from their masses?
planetesimal
aphelion
orbit
gravity
24
Which states Kepler's first law of planetary motion?
The orbit of a planet is an ellipse with the sun as a focus.
(orbital period)2 = (mean distance to sun)3
force increases as mass increases/distance decreases
As a planet orbits, it covers equal areas in equal time.
25
What would a model for a planetesimal look like?
elliptical path a body follows as it orbits another body
small body that develops into a planet early in solar system
rotating cloud of gas and dust that became sun & planets
disk of material surrounding young star, may become a planet

Gravity and the Solar System Flashcards | StudBud