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WorksheetsKepler's Laws Review
Total questions: 50
Worksheet time: 25mins
Name
Class
Date
1.
What is Kepler's 1st Law?
a)
Law of Orbits
b)
Law of Areas
c)
Law of Periods
2.
What is Kepler's 2nd Law?
a)
Law of Orbits
b)
Law of Areas
c)
Law of Periods
3.
What is Kepler's 3rd Law?
a)
Law of Orbits
b)
Law of Areas
c)
Law of Periods
4.
Kepler's 1st Law states that:
a)
Planets orbit the sun in elliptical paths.
b)
As planets orbit the sun, they cover equal areas in equal times.
c)
The farther a planet is from the sun, the longer it will take to make a complete orbit.
5.
Kepler's 2nd Law states that:
a)
Planets orbit the sun in elliptical paths.
b)
As planets orbit the sun, they cover equal areas in equal times.
c)
The farther a planet is from the sun, the longer it will take to make a complete orbit.
6.
Kepler's 3rd Law states that:
a)
Planets orbit the sun in elliptical paths.
b)
As planets orbit the sun, they cover equal areas in equal times.
c)
The farther a planet is from the sun, the longer it will take to make a complete orbit.
7.
Which of Kepler's Laws is illustrated here?
a)
1st Law
b)
2nd Law
c)
3rd Law
8.
Which of Kepler's Laws is illustrated here?
a)
1st Law
b)
2nd Law
c)
3rd Law
9.
Which of Kepler's Laws is illustrated here?
a)
1st Law
b)
2nd Law
c)
3rd Law
10.
Which is true about eccentricity?
a)
It is a measurement of how elliptical (flat or circular) a planet's orbit is.
b)
It is a measurement of how large or small a planet's orbit is.
c)
It is a measurement based on a planet's mass.
d)
Eccentricity changes depending on how close a planet is to the sun.
11.
The eccentricity of a perfect circle is ______.
a)
0
b)
0.5
c)
1
d)
dependent on how large the circle is
12.
What is the eccentricity of a straight line?
a)
1
b)
0
c)
0.5
d)
A straight line does not have eccentricity.
13.
What are foci?
a)
Two imaginary points around which an ellipse is drawn.
b)
Two points that are always at the very center of an ellipse.
c)
Two points that are always at the very edge of an ellipse.
14.
What happens to the shape of an ellipse as the foci move further apart?
a)
The ellipse becomes flatter.
b)
The ellipse becomes rounder.
15.
What happens to the shape of an ellipse as the foci move closer together?
a)
The ellipse becomes flatter.
b)
The ellipse becomes rounder.
16.
What is the eccentricity of Earth's orbit?
a)
0.017--nearly circular.
b)
0.927--nearly flat
c)
0--a perfect circle
d)
1--a flat line
17.
Which ellipse has the highest eccentricity?
a)
Top
b)
Middle
c)
Bottom
18.
Which ellipse has the lowest eccentricity?
a)
Top
b)
Middle
c)
Bottom
19.
What is axial tilt?
a)
The degree to which the Earth is tilted on its axis.
b)
The shape of the Earth's orbit around the sun.
c)
The angle of the Earth's orbit around the sun.
d)
Another term for the Earth's equator.
20.
What is Earth's current axial tilt?
a)
23.5 °
b)
24.5 °
c)
22.1 °
d)
90°
21.
What is Earth's minimum axial tilt?
a)
23.5 °
b)
24.5 °
c)
22.1 °
d)
90°
22.
What is Earth's maximum axial tilt?
a)
23.5 °
b)
24.5 °
c)
22.1 °
d)
90°
23.
Why do the seasons change?
a)
Because of the axial tilt of the Earth.
b)
Because of how close or far the Earth is from the sun.
c)
Because of where the Earth is located in its orbit.
d)
Because sometimes Earth is facing the sun and other times it is facing away.
24.
When axial tilt is greater, seasons will be:
a)
more extreme
b)
less extreme
25.
When axial tilt is less, seasons will be:
a)
more extreme
b)
less extreme
26.
In the Northern Hemisphere, during which season is Earth closest to the sun?
a)
Summer
b)
Fall
c)
Winter
d)
Spring
27.
In the Southern Hemisphere, during which season is Earth closest to the sun?
a)
Summer
b)
Fall
c)
Winter
d)
Spring
28.
What is "rotation?"
a)
The motion of Earth spinning once on its axis.
b)
The motion of the Earth moving once around the sun.
29.
What is "revolution?"
a)
The motion of Earth spinning once on its axis.
b)
The motion of the Earth moving once around the sun.
30.
How long does it take the Earth to rotate once?
a)
24 hours (1 day)
b)
365.25 days (1 year)
c)
100 days
d)
100 years
31.
How long does it take the Earth to revolve once?
a)
24 hours (1 day)
b)
365.25 days (1 year)
c)
100 days
d)
100 years
32.
What is the term for the point at which the Earth is closest to the sun?
a)
Perihelion
b)
Aphelion
c)
Precession
d)
Inclination
33.
What is the term for the point at which the Earth is farthest from the sun?
a)
Perihelion
b)
Aphelion
c)
Precession
d)
Inclination
34.
When is the summer solstice?
a)
June 21
b)
March 21
c)
September 21
d)
December 21
35.
When is the winter solstice?
a)
June 21
b)
March 21
c)
September 21
d)
December 21
36.
When is the spring (vernal) equinox?
a)
June 21
b)
March 21
c)
September 21
d)
December 21
37.
When is the fall (autumnal) equinox?
a)
June 21
b)
March 21
c)
September 21
d)
December 21
38.
Which is true about the summer solstice?
a)
We get the most daylight and the least amount of darkness.
b)
We get the most darkness and the least amount of daylight.
c)
We get the same number of daytime and nighttime hours.
39.
Which is true about the winter solstice?
a)
We get the most daylight and the least amount of darkness.
b)
We get the most darkness and the least amount of daylight.
c)
We get the same number of daytime and nighttime hours.
40.
Which is true about the spring (vernal) equinox?
a)
We get the most daylight and the least amount of darkness.
b)
We get the most darkness and the least amount of daylight.
c)
We get the same number of daytime and nighttime hours.
41.
Which is true about the fall (autumnal) equinox?
a)
We get the most daylight and the least amount of darkness.
b)
We get the most darkness and the least amount of daylight.
c)
We get the same number of daytime and nighttime hours.
42.
What is orbital precession?
a)
Earth's orbit around the sun wobbles over time.
b)
Earth's tilt wobbles like a spinning top.
43.
What is the precession of the earth?
a)
Earth's orbit around the sun wobbles over time.
b)
Earth's tilt wobbles like a spinning top.
44.
What is inclination?
a)
A planet's orbital plane (the angle at which it orbits the sun).
b)
The wobble of the Earth's orbit.
c)
How long a planet's path around the sun is.
d)
How likely a planet is to orbit around the sun.
45.
Why is Pluto's orbit unusual?
a)
It has a 17.1° inclination (tilt).
b)
It is much larger than the other planets' orbits.
c)
It is much smaller than the other planets' orbits.
46.
Our North Star is:
a)
Polaris
b)
Vega
c)
Betelgeuse
d)
The Sun
47.
Far in the future, our North Star will be:
a)
Polaris
b)
Vega
c)
Betelgeuse
d)
The Sun
48.
As a planet moves closer to the sun in its orbit, its orbital velocity (speed):
a)
Increases
b)
Decreases
c)
Stays the same
49.
As a planet moves farther from the sun in its orbit, its orbital velocity (speed):
a)
Increases
b)
Decreases
c)
Stays the same
50.
What causes a planet's speed to change as it approaches the sun?
a)
The sun's gravity causes the planet to travel faster.
b)
The sun's gravity causes the planet to travel slower.
c)
The planet's rotation causes it to speed up.
d)
The planet's rotation causes it to slow down.
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