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Structure of the Solar System & Historical Models Flashcards | StudBud
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Structure of the Solar System & Historical Models
Structure of the Solar System & Historical Models
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Early Astronomers' theories and gravity, #grade6
Flashcards
22 cards
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Questions
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Answers
1
Which of Kepler's laws tells us that a planet revolves faster when it is closer to the Sun?
3rd
1st
2nd
2
What inward-pulling force causes objects to move in a circular path?
gravity
speed
centripetal
friction
3
Which Kepler's law states the planets farthest from the Sun take longer to complete 1 orbit?
Kepler's 2nd Law
Kepler's 1st Law
Kepler's 3rd Law
The Universal Law of Gravity
4
As planets orbit the Sun, at what point will the planet be moving faster in its orbit?
whenever it needs to
closest to the Sun
farthest away from the Sun
even with the Sun
5
The sun and all of the bodies that orbit the sun is the definition of which word?
Milky Way Galaxy
constellations
universe
solar system
6
Which of these statements about our planet formation is true?
Gas planets formed in the inner disk where temps were high
Gas planets formed in the outer disk where temps were cold
Rocky planets formed in the inner disk where temps were cold
Rocky planets formed in the outer disk where temps were high
7
Which astronomer gave us a geocentric model that was believed to be true for over 1400 years?
Galileo
Ptolemy
Newton
Kepler
8
dust grains colliding, sticking together and growing larger to meter-size objects describes ...
The formation of planetesimals
The formation of the sun
The formation of the universe
The formation of comets & asteroids
9
Which of the flow charts best describes the formation of the solar system?
solar nebula- protostellar disk-planetesimals-planets-sun
solar nebula-planetesimals-sun-planets-protostellar disk
solar nebula-protostellar disk-sun-planetesimals-planets
protostellar disk-planets-solar nebula- sun-planetesimals
10
How did Copernicus describe his heliocentric model?
The sun moves in an elliptical orbit
The sun is in the center & planets orbit in perfect circles
The sun is in the center & planets orbit wheels-on-wheels
The sun revolves around Earth
11
Which planet is so large that all other planets could fit inside it?
Saturn
Neptune
Jupiter
Uranus
12
Which planet has the tallest volcanic mountains and deepest valleys in our solar system?
Venus
Mercury
Mars
Earth
13
What does "heliocentric" mean?
Earth-centered
sun-centered
to go around the moon
to go around the Earth
14
Which of these scenarios can be explained by Kepler's 3rd Law?
Pluto's orbital period is related to its distance from sun
Pluto moves slower when it is farther from the sun
Pluto is orbited by a moon only slightly smaller than it is
Pluto's orbit is long and flat
15
A planetesimal is the beginning stage of __________________?
a protostellar disk
the formation of the sun
the formation of the universe
the formation of the planets
16
Kepler gave us which model of the solar system?
heliocentric with elliptical orbits
geocentric with elliptical orbits
geocentric with perfect circle orbits
heliocentric with perfect circle orbits
17
When 2 objects are farther apart they have....
more gravitational pull
no gravitational pull
the same gravitational pull
less gravitational pull
18
A solar nebula is ...
a baby star
a cloud of gas & dust that heats up and forms a star
the center of a galaxy
the brightest star in the Universe
19
What is the definition of "geocentric"?
moon-centered
sun-centered
Earth-centered
elliptical orbits
20
Why are most celestial objects spherical (round)?
Magnetism
Friction
Gravity
Speed
21
What did Newton's Universal Law of Gravitation
NOT
teach us?
all objects fall at a constant rate
the force depends on the distance between the objects
all objects attract each other
the force depends on the mass of the objects
22
Which of Kepler's laws tells us that the planets revolve in an ellipse not a circle?
Universal Law of Gravity
Kepler's 2nd Law
Kepler's 1st Law
Kepler's 3rd Law
