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Unit 3 Review
Unit 3 Review
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Gravity and the Solar System
Flashcards
41 cards
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Practice quiz
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Questions
41
Answers
1
What are the two most common elements found in stars?
Hydrogen and Helium
Helium and Carbon
Hydrogen and Carbon
Hydrogen and Iron
2
Which of the following best describes gravity's role in the solar system?
gravity keeps the planets in orbit around the Sun
gravity holds objects on the planets
gravity supplies energy for the planets
gravity protects the planets from solar winds
3
The more massive the planet, the stronger its gravity.
False
True
4
Which group of planets are rocky?
Inner Planets
Outer Planets
All of the Planets
5
Without gravity in the solar system...
The earth would fall
The earth would leave its orbit
The earth would rest
6
The nebular hypothesis describes the formation of the ___.
Big Bang
Solar System
Country
Universe
7
Which planets have rings?
Juipter, Saturn, Uranus
None
Juipter, Saturn
Juipter, Saturn, Uranus, Neptune
8
The planets in the solar system orbit a certain object. The pull this object creates is called
Gravity
Friction
Electromagnetic Force
Air resistance
9
Gravity is caused by
A Magnetic Field
The amount of Mass an object has
Gravity isn't caused by anything, it's just there
10
Which planets tend to have greater surface gravity?
Terrestrial
Planet type does not affect surface gravity
They have similar surface gravity
Gaseous
11
Which group of planets has longer revolutions?
Inner Planets
All of the Planets
Outer Planets
12
What is the most common element in the universe?
oxygen
carbon
gold
hydrogen
13
How many AU’s is the distance from Earth to the sun?
1.5 AU
15 AU
1.00 AU
20 AU
14
Who developed the three laws of planetary motion?
Kepler
Albert Einstein
Isaac Newton
Tycho Brahe
15
List the planets in order
Jupiter-Mercury-Saturn-Neptune-Earth-Uranus-Venus-Mars
Mars-Mercury-Earth-Venus-Saturn-Jupiter-Uranus-Neptune
Mercury-Venus-Earth-Mars-Jupiter-Saturn-Uranus-Neptune
Neptune-Jupiter-Mercury-Saturn-Mars-Earth-Venus-Uranus
16
Which term can red shift be explained by?
Doppler effect
interference of waves
diffraction grating
Beats
17
When did the Big Bang theory happen?
13.7 million years ago
1 million years ago
13.7 billion years ago
4.6 million years ago
18
Which properties describe the Outer Planets?
cold, longer days, rocky, many moons
shorter days, many moons, large, cold
large, cold, gaseous, longer days
large, many moons, hot, shorter years
19
How would you describe the strength of the sun's gravity in the solar system?
The sun's gravity is strongest near Neptune.
The sun's gravity is strongest near Mercury.
Sun's gravity is equal throughout the solar system but it weakens beyond
20
These planets have long revolutions but short rotations.
Terrestrial planets
Gas Giants
21
What do stars do in a red shift?
Move closer to the Earth
Move farther away from the Earth
22
How many laws are in 'Keplers Laws of Planetary Motion'?
2
1
3
6
23
Which planets are warmer?
Inner planets
Outer planets
24
Tides & tidal forces are caused by ________
the gravitational pull of the Sun
the tilt of the Earth on its axis
the gravitation force the moon exerts on Earth
the speed of the Earth rotation
25
Keplers Third Law states that planets
Planets with larger orbits, move more slowly through those orbits
travel in ellipses
Planets with shorterr orbits, move more slowly through those orbits
move faster when close to the sun
26
Keplers 2nd law states the planets ___________________.
move faster closer to sun
move faster further away from sun
27
Which planets have a faster rotation, and shorter "days?"
Inner planets
Outer planets
28
Cosmic Background Radiation comes from
Galaxies
The Big Bang
Microwave Ovens
Stars
29
Which of these is NOT evidence for the Big Bang Theory?
The even positioning of new galaxies.
Red Shift
Cosmic Background Radiation.
30
What is gravity's role in forming the solar system?
Pulled asteroids floating in space toward star in cloud
It caused cloud dust to rotate, pull matter into center-sun
Large explosion pushed gas and dust to form planets, sun
31
What does a red shift in light mean?
The object is getting warmer
The object is moving closer to you
The object isn't moving
The object is moving away from you
32
Which of the following is one of Keplers Laws of Planetary Motion?
Gravitational force between objects decreace with distance.
An object at motion remains in motion.
Inner planets orbit in a different direction than outer.
Planets move on elliptical orbits with the sun at one focus.
33
Planets with no rings, few moons and faster revolutions (orbits)
gas giants
terrestrial planets
34
Which planet rotates backwards?
Saturn
Neptune
Pluto
Venus
35
how many dwarf planets are there?
3
5
1
4
36
How did the Solar System form in the Nebular Hypothesis?
Rocky inner planets and icy outer planets formed.
The nebula was composed mostly of hydrogen and helium.
All of the above.
It contracted into a disk shape with a pre-Sun at the center
37
keplers laws describe
anything that orbits
Planet orbits
comets orbits
moons orbits
38
An AU stands for:
Astronomy Unit
Asteroid Unidentified
Astronomical Unit
Astrology Understanding
39
Which planet has the slowest axis rotation?
Earth
Venus
Neptune
Mercury
40
What is Kepler's First Law
none of these
Planets with smaller orbits take less time to orbit the sun
Planets travel in ellipses with 2 foci
Planets sweep out equal areas over equal time
41
Which two planets do NOT have any moons?
Earth and Mars
Mercury and Venus
Jupiter and Neptune
Saturn and Uranus
