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Our Solar System
Our Solar System
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Solar system, Sun, planets, moons, asteroids, comets
Flashcards
72 cards
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Questions
72
Answers
1
These are small rocky objects that divide Mars from Jupiters.
Asteroid belt
Comets
Kuiper belt
Meteoroids
2
Which planet rotates on its side?
Uranus
Earth
Venus
Neptune
3
Which of
Kepler's law
states:
FARTHER
planets from the Sun have
LONGER
period of revolution?
Fourth law
Second law
Third law
First law
4
Which one of the Outer Planets rotates
CLOCKWISE
or in the
OPPOSITE
direction?
Uranus
Neptune
Jupiter
Saturn
5
The path a planet takes around the Sun is its _______.
rotation
orbit
tilt
gravity
6
The
planetary revolution
of this planet is equal to
one year
. Which planet is it?
Earth
Mercury
Uranus
Jupiter
7
Which planets are called
gas giants
because they are essentially huge balls of gas?
Outer planets
Earth, Mars and Uranus
Inner planets
Mercury, Jupiter and Neptune
8
Which planet has the
SHORTEST
period of revolution?
Jupiter
Mars
Venus
Mercury
9
What is the 7
th
planet from the Sun?
Saturn
Uranus
Jupiter
Neptune
10
What is the 3
rd
planet from the Sun?
Mars
Venus
Mercury
Earth
11
In which direction does the gravity vector always point?
Away from the Sun
Towards the Sun
Opposite from the Sun
Parallel to the Sun
12
What is the 8
th
planet from the Sun?
Saturn
Neptune
Uranus
Jupiter
13
What is the eccentricity of a perfect ellipse
1.0
0.5
0
1.5
14
Of the rocky planets, which has a thin atmosphere?
Mercury
Venus
Earth
Mars
15
Which planet has more the 60 moons?
Uranus
Saturn
Venus
Jupiter
16
Which one of these is
NOT
a part of the
Inner Planets
?
Venus
Jupiter
Mars
Earth
17
Which of
Kepler's law
states: A planet covers or sweeps out equal area in equal time?
Third law
Fourth law
First law
Second law
18
The actual shape of the
planetary orbit
in in our solar system is a/an _________.
triangle
ellipse
star
square
19
Which planets are also known as the
rocky planets
because their surfaces are
rocky
?
Mars, Jupiter and Pluto
Outer planets
Saturn, Venus and Earth
Inner planets
20
An imaginary line through the center of the planet is called ...
an axis of rotation.
a period of revolution.
a year.
an orbit.
21
What gives Uranus and Neptune their blue color?
Nitrogen oxide
Methane
Ammonia
Sulfur
22
The time it takes a planet to complete one orbit or goes around the Sun once is known as _____.
a year
a light year
seasons
an astronomical unit
23
Where does the asteroid belt come from?
From other galaxy
They're left over from the formation of the solar system.
From the Kuiper belt.
They just burst into existence.
24
What do you notice about the spacing of the foci when the ellipse is very round?
The foci are CLOSER together.
The foci are of EQUAL distance.
The foci are FARTHER apart.
The foci are located outside of the ellipse.
25
What divides the Inner Planets from the Outer Planets?
The asteroid belt
The Kuiper Belt
Saturn's rings
Nothing; just empty space.
26
Which planet has only one moon?
Saturn
Mars
Earth
Neptune
27
What is the 2
nd
planet from the Sun?
Venus
Mercury
Mars
Earth
28
How many planets in our Solar System have rings around them?
6
4
8
2
29
What is the approximate tilting of Earth's axis?
23 degrees
33 degrees
43 degrees
13 degrees
30
What is the eccentricity of Earth?
0.27
0.17
0.47
0.37
31
Which planet's orbit looks the LEAST like a circle?
Saturn
Mercury
Neptune
Venus
32
An imaginary path that planets, dwarf planets, asteroids or comets take around the Sun is ...
a period of revolution.
an axis of rotation.
an orbit.
a tilt.
33
Which planet has the
SMALLEST
planetary revolution?
Mercury
Mars
Venus
Earth
34
The Inner Planets are within ____ AU of the Sun.
1.0
2.5
1.5
2.0
35
Which planet is the
LEAST
dense?
Earth
Jupiter
Mercury
Saturn
36
Which inner planets are about the
SAME
size?
Mercury and Venus
Earth and Mars
Jupiter and Saturn
Venus and Earth
37
How does the distance between the planet and the Sun affect its period?
The distance does not affect its period.
The period does not affect its distance.
The shorter the distance, the longer its period.
The greater the distance, the longer its period.
38
These are solid particles from space that pass through Earth's atmosphere.
Meteoroids
Comets
Asteroids
Superman
39
Which relationship makes a straight line?
T = a (or R)
T3 = a2 (or R2)
T2 = a2 (or R2)
T2 = a3 (or R3)
40
What is the 4
th
planet from the Sun?
Venus
Mercury
Mars
Earth
41
Which part of the orbit does the gravity point in the opposite direction as the velocity vector
As the planet is moving farther from the Sun.
As the planet rotates on its own axis.
As the planet orbits at any point along its orbital path.
As the planet is moving closer to the Sun.
42
What is the 1
st
planet from the Sun?
Mercury
Mars
Earth
Venus
43
What is the 5
th
planet from the Sun?
Uranus
Neptune
Jupiter
Saturn
44
Earth is how many AU away from the Sun?
1.5
2.0
1.0
0.5
45
Why does it take the Outer Planets so long to orbit the Sun? Because they ...
are made of gas and are light.
move slowly and have farther/wider distance to travel.
are small and so they move slower.
are big and so they move slowly.
46
How is the size of a planet related to the thickness of its atmosphere?
Medium size planet, thickest its atmosphere.
There's no relationship.
Smallest planet, thickest its atmosphere.
Largest planet, thickest its atmosphere.
47
How does the period change as the orbital radius increases?
Increases with increasing radius.
Decreases with increasing radius.
The period remains the same; no change.
The period gets shorter.
48
The ______ of an ellipse is a number that describes the flatness of the circle/ellipse.
density
area
eccentricity
perimeter
49
What happens to the planet orbits over time?
Their orbits grow larger with the expanding universe.
Their orbits become smaller.
Their orbits remain constant.
Their orbits keep changing.
50
One AU is equal to about how many kilometers?
100,000
150,000,000
10,000
46,000,000,000
51
Which of
Kepler's law
states: All objects move around the Sun in
elliptical paths
?
First law
Second law
Third law
Fourth law
52
A combination of a star, planets, moon, asteroids, comets and other small cosmic objects is ...
a nebulae.
a star cluster.
a galaxy.
a solar system.
53
The time it takes a planet to complete ONE orbit around the Sun is called ...
a tilt.
a period of rotation.
a day.
a period of revolution.
54
What is the 6
th
planet from the Sun?
Saturn
Jupiter
Neptune
Uranus
55
Which planet has the
GREATEST
planetary revolution?
Uranus
Neptune
Saturn
Jupiter
56
Which one of the Inner Planets rotates
CLOCKWISE
or in the
OPPOSITE
direction?
Earth
Saturn
Neptune
Venus
57
Which of these two factors act together to create a stable, constant planetary orbit?
Planetary rotation and planetary revolution
Gravity and planetary revolution
Gravity and planetary rotation
Gravity and the planet's inertia
58
The time it takes for
ONE rotation
is called ...
an axis.
a period of revolution.
a year.
a period of rotation.
59
What makes Venus extremely hot compare to the rest of the Inner Planets?
Because of its water vapor (H2O) atmosphere.
Because of its CO2 atmosphere.
Because of its iron oxide (Fe2O3) atmosphere.
Because of its methane atmosphere.
60
Of the
rocky planets
, which have well-developed
atmosphere
?
Venus and Earth
Mercury and Mars
Earth and Mars
Mercury and Venus
61
Which planet has the
LONGEST
period of revolution?
Mars
Neptune
Uranus
Earth
62
How many planets in our solar system has a period of rotation that is more than 24 hours?
6
8
2
4
63
What happens to the foci when the orbit becomes smaller or more flattened?
The foci become one dot.
The foci are of EQUAL distance.
The foci are FARTHER apart.
The foci are CLOSER together.
64
These are small, icy bodies that orbit the Sun.
Asteroids
Space ship
Meteoroids
Comets
65
Which have rings around them: The Inner Planets or the Outer Planets?
Both
Neither
Outer Planets
Inner Planets
66
How many planets in our solar system has a period of rotation that is 24 hours or less?
6
3
4
1
67
Of all the planets in our Solar System, which planet has the
THICKEST
atmosphere of all?
Neptune
Mercury
Earth
Jupiter
68
What is the eccentricity of a perfect circle?
1.0
0
1.0
0.5
69
This is where most of the long-period comets that have been observed.
Andromeda galaxy
Oort cloud
Kuiper belt
Asteroid belt
70
What does "
AU
" stand for?
Average Unit
Asteroid Unit
Atomic Unit
Astronomical Unit
71
Of the inner planets, which has
NO
atmosphere?
Venus
Mars
Mercury
Earth
72
Which planet rotates very, very
SLOWLY
, that it takes 243 Earth's day to make one of its day?
Venus
Saturn
Mars
Pluto
