WorksheetsIntroduction to Orbital Mechanics
Total questions: 30
Worksheet time: 24mins
What is an orbit?
A closed path around which a planet or satellite travels
A random path in space
A fixed point in space
A type of star.
What shape do satellites orbit Earth as?
Circle
Ellipse
Square
Triangle
Elliptical orbits remain fixed in space, and Earth spins under a ______ satellite orbit.
moving
fixed
rotating
shifting
What is an ellipse?
A three-dimensional shape
A two-dimensional shape produced by a plane fully intersecting a cone
A line
A point.
An ellipse is formed by a plane intersecting a cone. If the plane intersects the cone at an angle perpendicular to the cone’s center line, what special shape is formed?
Triangle
Square
Circle
Rectangle
Fill in the blank: An ellipse is the ______ shape that is produced by a plane fully intersecting a cone.
three-dimensional
two-dimensional
one-dimensional
Fill in the blank: In an ellipse, the sum of distances from the two foci to any point on the ellipse is ______.
variable
constant
zero
infinite
Which of the following statements is true about a circle?
A) A circle is an ellipse with both foci at the same spot.
B) A circle has two distinct foci.
C) A circle's foci are always outside the circle.
D) A circle has no foci.
In an ellipse, 'b' defines 1/2 the ______.
major axis length
minor axis length
distance from the center to a focal point
radius of the circle
What is 'c' in the context of an ellipse?
1/2 the major axis length
1/2 the minor axis length
The distance from the center to a focal point
The radius of the circle.
In an ellipse, what are the focal points labeled as in the diagram?
A) F1 and F2
B) C and F1
C) r1 and r2
D) 2a and 2b
Fill in the blank: The following orbit types: LEO, MEO, HEO, and ____.
A) GEO
B) CEO
C) TEO
D) FEO
The Keplerian element set consists of how many parameters?
4
5
6
7
Two of the Keplerian elements describe the ______ of an orbit.
A) orientation
B) size and shape
C) location
D) speed
Three of the Keplerian elements describe the ______ of the orbit in space.
size
shape
orientation
location
One of the Keplerian elements describes the ______ of the satellite within the orbit.
size
shape
orientation
location
What does eccentricity describe?
The color of an orbit
The roundness of an orbit
The size of an orbit
The speed of an orbit.
Fill in the blank: Eccentricity can vary from ____.
A) 0 to 1
B) 1 to 2
C) -1 to 0
D) 0 to 2
What is the formula for calculating the eccentricity of an ellipse?
e=1−a2b2
e = 1−a2b2
e=a2−b2
e = a/b
Which axis is labeled as 'a' in the diagram?
Semi-major axis
Semi-minor axis
Major axis
Minor axis
Fill in the blank: The semi-minor axis is labeled as ____.
A) a
B) b
C) c
D) d
What does an eccentricity of 0 indicate about an orbit?
The orbit is elliptical
The orbit is circular
The orbit is parabolic
The orbit is hyperbolic
Which of the following eccentricity values would indicate a closed orbit?
0.5
1.0
0
1.5
Fill in the blank: An orbit with an eccentricity of 0 is ______.
A) Circular
B) Elliptical
C) Parabolic
D) Hyperbolic
In the formula T=2π×(a(3/2)/GM) , what does 'G' stand for?
Gravitational parameter
Universal gravitation constant
Mass of central body
Orbital period
The farther a planet is from the sun, the
less time it will take to revolve around the sun
more time it will take to revolve around the sun
distance does not play a role
What shape are all stable orbits?
Circles
Ellipses
Rectangles
Round
Which of these orbit planets?
dwarf planets
natural satellites
artificial satellites
comets
asteroids
Which is NOT a Keplerian parameter?
Argument of Perigee
RAAN
True anomaly
Argument of Apogee
Which orbit is best for weather satellites?
Polar orbit
Equatorial orbit
Both polar and equatorial orbits
None of the above
