AE Orbital Mechanics Assessment (Part 3)

Last updated 3 months ago

45 questions

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2

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2

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1

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Library

AE Orbital Mechanics Assessment (Part 3)

Last updated 3 months ago

45 questions

1

2

Draggable item		Corresponding Item

1

2

Draggable item		Corresponding Item

1

2

1

2

Draggable item		Corresponding Item

1

2

1

The point in an orbit that is closest to the Earth.

What is the projection of a satellite's orbit onto the earth, represented in a 2D map called?

A satellite designed to take images to monitor the polar ice caps would have an inclination of ___ degrees.

A satellite crosses the equator in a northerly direction at 0 degrees longitude. On its next northerly pass over the equator it crosses at 23 degrees west longitude. How many minutes did it take this satellite to complete one orbit?

Draggable item		Corresponding Item
Describes the size of an orbit. For circular orbits, altitude is often used in place of this term.		Inclination
The point in the orbit of an object (such as a satellite) orbiting the earth that is at the greatest distance from the center of the earth.		Eccentricity
The measure of how circular or elliptical an orbit is.		Semi-Major Axis
The point in the orbit of an object (such as a satellite) orbiting the earth that is the closest to the center of the earth.		Apogee
The "tilt" of the orbit relative to the equator.		Perigee

Which orbital parameter must use a reference point in space, because an earth based reference point will move as the earth rotates?

_________________ is the angle between the Earth’s equatorial plane and the
plane of the orbit. It describes the tilt of the orbit.

An orbit with an inclination of 0 degrees is called:

An argument of perigee would be easiest to see in a picture of an orbit with which eccentricity?

-1.2

0.0

0.3

0.7

This philosopher was the first to propose heliocentric theory.

This philosopher believed that everything rotates around the Earth.

To make the pictured ellipse more circular, you should move foci A and B _________.

so that they align vertically

closer together

so that one is outside the existing ellipse

further apart

Many of Kepler's theories were based on the documentation of this philosopher that he worked with for a short time.

Both size (semi-major axis and/or altitude) and eccentricity play an important role in determining the period of the orbit.

True

False

Which of the following orbital parameters describes the size and shape of the orbit?

Label each ellipse with the correct eccentricities.

Draggable item		Corresponding Item
C		0
A		0.7
B		0.4

Who developed the Keplerian Element Set which describes the orbital parameters of satellites' orbits?

Label the position indicated with the A in the pictured orbit.

A circular orbit has an apogee roughly twice the altitude of its perigee.

True

False

What two details of a satellite's orbit can be determined from examining a ground trace?

Kepler has two different sets of laws of orbital motion. One set applies to planets orbiting the Sun, and the other set applies to man-made satellites orbiting the Earth.

True

False

The value of which orbital parameter is 0 when the satellite is at its perigee point and 180 when the satellite is at apogee?

All circles are ellipses and all ellipses are circles.

True

False

Which is NOT one of the six elements of the Keplerian element set?

What is the name of the "radii" labelled A in the pictured ellipse?

An object is moving slowest at apogee.

True

False

The Voyager 1 spacecraft was launched in 1977 to explore the solar system and beyond. In 2008, it was entering the region between our solar system and interstellar space known as the heliosheath. It is the furthest manmade object from the Eatch and it continuing its journey into the unknown. Based on what you have learned about orbital elements, the eccentricity of Voyager is greater than 1.

True

False

This scientist was the first to use a telescope to help prove heliocentric theory.

Which of the following missions would probably use a polar orbit?

satellite broadcasting a TV signal

satellite searching for life on Mars

satellite broadcasting radio

satellite collecting data on air quality on all continents

A geostationary satellite is called such because it is a satellite that doesn't move.

True

False

There is only one specified altitude for LEO (low earth orbit) satellites.

True

False

Why is there a ring of satellites around the Earth's equator roughly 22,000 miles away form the Earth?

This is the altitude for geostationary satellites. There is only one altitude at which satellites can achieve geostationary orbit to maintain a 24-hour period.

The US military launched these satellites as part of a national security plan allowing them access to unprecedented data being sent and received by other satellites.

This is the altitude for LEO satellites. There is only one altitude at which satellites can achieve LEO to maintain a 24-hour period.

Space-X launched these satellites as part of the low latency, broadband internet system to meet the needs of customers across the globe.

You have recently moved to Australia. You took your satellite TV dish with you. When you mount it to your new house, in which direction should it face?

North

South

East

West

The lunar missions were LEO orbits.

True

False

Russia uses the Molniya orbit frequently. Which of the following countries could also benefit from this type of orbit?

Spain

Mexico

Draggable item		Corresponding Item

The point in an orbit that is closest to the Earth.

semi-major axis

eccentricity

focal point

apogee

semi-minor axis

perigee

major axis

inclination

What is the projection of a satellite's orbit onto the earth, represented in a 2D map called?

Right ascension of the ascending node

Eccentricity

Inclination

Ascending Projection

Ground trace

Projected orbit

A satellite designed to take images to monitor the polar ice caps would have an inclination of ___ degrees.

35

0

90

75

10

A satellite crosses the equator in a northerly direction at 0 degrees longitude. On its next northerly pass over the equator it crosses at 23 degrees west longitude. How many minutes did it take this satellite to complete one orbit?

184

48

63

92

115

23

5.75

Describes the size of an orbit. For circular orbits, altitude is often used in place of this term.

Inclination

The point in the orbit of an object (such as a satellite) orbiting the earth that is at the greatest distance from the center of the earth.

Eccentricity

The measure of how circular or elliptical an orbit is.

Semi-Major Axis

The point in the orbit of an object (such as a satellite) orbiting the earth that is the closest to the center of the earth.

Apogee

The "tilt" of the orbit relative to the equator.

Perigee

Which orbital parameter must use a reference point in space, because an earth based reference point will move as the earth rotates?

Argument of Apogee

True Anomaly

Right ascension of the ascending node

Eccentricity

Inclination

Argument of Perigee

_________________  is the angle between the Earth’s equatorial plane and the
plane of the orbit. It describes the tilt of the orbit.

Eccentricity

Inclination

Angle of Apogee

Angle of Perigee

Sublimation

Eccentric Angle

Inclined Plane

An orbit with an inclination of 0 degrees is called:

Low Earth Orbit

Latitude

Geostationary Orbit

Equatorial Orbit

Polar Orbit

Ground trace

An argument of perigee would be easiest to see in a picture of an orbit with which eccentricity?

-1.2

0.0

0.3

0.7

This philosopher was the first to propose heliocentric theory.

Sir Isaac Newton

Aristotle

Galileo Galilei

Nicolaus Copernicus

Tycho Brahe

This philosopher believed that everything rotates around the Earth.

Galileo

Copernicus

Kepler

Aristotle

Brahe

Newton

To make the pictured ellipse more circular, you should move foci A and B _________.

so that they align vertically

closer together

so that one is outside the existing ellipse

further apart

Many of Kepler's theories were based on the documentation of this philosopher that he worked with for a short time.

Sir Isaac Newton

Aristotle

Nicolaus Copernicus

Tycho Brahe

Galileo Galilei

Both size (semi-major axis and/or altitude) and eccentricity play an important role in determining the period of the orbit.

True

False

Which of the following orbital parameters describes the size and shape of the orbit?

Argument of Apogee

Argument of Perigee

Eccentricity

Point of Origin

True Anomaly

Right Ascension of the Ascending Node

Semi-Major Axis

Inclination

Focal Transference

Label each ellipse with the correct eccentricities.

C

0

A

0.7

B

0.4

Who developed the Keplerian Element Set which describes the orbital parameters of satellites' orbits?

Johannes Kepler

Galileo Galilei

Nicolaus Copernicus

Sir Isaac Newton

Aristotle

Label the position indicated with the A in the pictured orbit.

minor axis

focal point

eccentricity

perigee

major axis

inclination

apogee

center

A circular orbit has an apogee roughly twice the altitude of its perigee.

True

False

What two details of a satellite's orbit can be determined from examining a ground trace?

Inclination

Eccentricity

Semi-Minor Axis

Perigee

Period

Semi-Major Axis

Apogee

Right Ascension of the Ascending Node

Kepler has two different sets of laws of orbital motion. One set applies to planets orbiting the Sun, and the other set applies to man-made satellites orbiting the Earth.

True

False

The value of which orbital parameter is 0 when the satellite is at its perigee point and 180 when the satellite is at apogee?

Argument of Apogee

Focal Transference

Semi-Major Axis

Eccentricity

Argument of Perigee

Right Ascension of the Ascending Node

Inclination

Point of Origin

True Anomaly

All circles are ellipses and all ellipses are circles.

True

False

Which is NOT one of the six elements of the Keplerian element set?

Argument of Apogee

Eccentricity

Inclination

True Anomaly

Semi-Major Axis

Right Ascension of the Ascending Node

Argument of Perigee

What is the name of the "radii" labelled A in the pictured ellipse?

focal point

apogee

eccentricity

perigee

inclination

semi-minor axis

semi-major axis

An object is moving slowest at apogee.

True

False

The Voyager 1 spacecraft was launched in 1977 to explore the solar system and beyond. In 2008, it was entering the region between our solar system and interstellar space known as the heliosheath. It is the furthest manmade object from the Eatch and it continuing its journey into the unknown. Based on what you have learned about orbital elements, the eccentricity of Voyager is greater than 1.

True

False

This scientist was the first to use a telescope to help prove heliocentric theory.

Nicolaus Copernicus

Aristotle

Tycho Brahe

Galileo Galilei

Sir Isaac Newton

Which of the following missions would probably use a polar orbit?

satellite broadcasting a TV signal

satellite searching for life on Mars

satellite broadcasting radio

satellite collecting data on air quality on all continents

A geostationary satellite is called such because it is a satellite that doesn't move.

True

False

There is only one specified altitude for LEO (low earth orbit) satellites.

True

False

Why is there a ring of satellites around the Earth's equator roughly 22,000 miles away form the Earth?

This is the altitude for geostationary satellites. There is only one altitude at which satellites can achieve geostationary orbit to maintain a 24-hour period.

The US military launched these satellites as part of a national security plan allowing them access to unprecedented data being sent and received by other satellites.

This is the altitude for LEO satellites. There is only one altitude at which satellites can achieve LEO to maintain a 24-hour period.

Space-X launched these satellites as part of the low latency, broadband internet system to meet the needs of customers across the globe.

You have recently moved to Australia. You took your satellite TV dish with you. When you mount it to your new house, in which direction should it face?

North

South

East

West

The lunar missions were LEO orbits.

True

False

Russia uses the Molniya orbit frequently. Which of the following countries could also benefit from this type of orbit?

Spain

Mexico

Egypt

Finland

The country of Ecuador rests on the equator. Why would a geostationary satellite not be a good choice for a satellite to take images of Ecuador?

It will not pass near the equator.

A geostationary satellite is unreliable and is more likely to crash.

The satellite will be moving too quickly to take pictures.

It's altitude is too great to take images that show detail.

Groups of satellites in various orbits that work together to accomplish a mission are called constellations.

True

False

Polar

Short orbital period of approx 90 minutes

Molniya

Period equals one day

Low Earth Orbit

Highly inclined AND highly elliptical orbit

Geostationary

Inclination of 90 degrees

A Sun-synchronous orbit is a special type of polar orbit.

True

False

Which of the following men was responsible for the Laws of motion and gravitation?

Brahe

Kepler

Copernicus

Newton

Aristotle

A satellite is: (Select all that apply)

A small object that orbits, or revolves around, a larger object in space

A good way to get premier TV channels

Any lighter than air aircraft that leaves Earth's gravitational pull

A sun, moon, spacecraft or ISS

Any object in orbital motion

This is the ONLY PARAMETER that determines the orbital period.

Eccentricity

Inclination

True anomaly

Semi-major axis

Argument of Perigee

RAAN

An orbit with an inclination of 90 degrees is called:

Ground trace

Equatorial Orbit

Low Earth Orbit

Geostationary Orbit

Polar Orbit

Latitude

Kepler's First Law states that:

the orbits of planets are ellipses with the sun at one focus

the orbits of planets enjoy little freeway congestion

the orbits of planets are ellipses with the sun at the center

the orbits of planets is a game of tag divided into ringed and unringed teams

the orbits of planets are ellipses with no set focal point

Kepler's Second Law of Planetary Motion states that "A line joining a planet and its star sweeps out equal areas during equal intervals of time." Using this information, if a satellite's orbit is not circular, which of the following are true?

It travels faster the further it is from Earth

It travels faster at night

it is traveling at a uniform speed

It travels slower the closer it is to Earth

It travels slower the closer it is to the Sun

It travels faster the closer it is to Earth

AE Orbital Mechanics Assessment (Part 3)

AE Orbital Mechanics Assessment (Part 3)

The point in an orbit that is closest to the Earth.

What is the projection of a satellite's orbit onto the earth, represented in a 2D map called?

A satellite designed to take images to monitor the polar ice caps would have an inclination of ___ degrees.

A satellite crosses the equator in a northerly direction at 0 degrees longitude. On its next northerly pass over the equator it crosses at 23 degrees west longitude. How many minutes did it take this satellite to complete one orbit?

Which orbital parameter must use a reference point in space, because an earth based reference point will move as the earth rotates?

_________________ is the angle between the Earth’s equatorial plane and theplane of the orbit. It describes the tilt of the orbit.

An orbit with an inclination of 0 degrees is called:

An argument of perigee would be easiest to see in a picture of an orbit with which eccentricity?

This philosopher was the first to propose heliocentric theory.

This philosopher believed that everything rotates around the Earth.

To make the pictured ellipse more circular, you should move foci A and B _________.

Many of Kepler's theories were based on the documentation of this philosopher that he worked with for a short time.

Both size (semi-major axis and/or altitude) and eccentricity play an important role in determining the period of the orbit.

Which of the following orbital parameters describes the size and shape of the orbit?

Label each ellipse with the correct eccentricities.

Who developed the Keplerian Element Set which describes the orbital parameters of satellites' orbits?

Label the position indicated with the A in the pictured orbit.

A circular orbit has an apogee roughly twice the altitude of its perigee.

What two details of a satellite's orbit can be determined from examining a ground trace?

Kepler has two different sets of laws of orbital motion. One set applies to planets orbiting the Sun, and the other set applies to man-made satellites orbiting the Earth.

The value of which orbital parameter is 0 when the satellite is at its perigee point and 180 when the satellite is at apogee?

All circles are ellipses and all ellipses are circles.

Which is NOT one of the six elements of the Keplerian element set?

What is the name of the "radii" labelled A in the pictured ellipse?

An object is moving slowest at apogee.

This scientist was the first to use a telescope to help prove heliocentric theory.

Which of the following missions would probably use a polar orbit?

A geostationary satellite is called such because it is a satellite that doesn't move.

There is only one specified altitude for LEO (low earth orbit) satellites.

Why is there a ring of satellites around the Earth's equator roughly 22,000 miles away form the Earth?

You have recently moved to Australia. You took your satellite TV dish with you. When you mount it to your new house, in which direction should it face?

The lunar missions were LEO orbits.

Russia uses the Molniya orbit frequently. Which of the following countries could also benefit from this type of orbit?

_________________ is the angle between the Earth’s equatorial plane and the
plane of the orbit. It describes the tilt of the orbit.