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Aerospace 5
Aerospace Dimensions 2000
71
Other
Not Applicable
05/22/2012

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Cards

Term
What is a region in space where no radiation is emitted?
Definition
Black hole
Term
What is the space between the Earth and the Moon?
Definition
Cislunar space
Term
What is a grouping of stars, named after mythical figures and animals?
Definition
constellation
Term
What is an enormous collection of stars arranged in a particular shape?
Definition
galaxy
Term
What is measured from the center of the Sun to the orbit of its outermost planet?
Definition
interplanetary space
Term
What is the distance from one solar system to another?
Definition
interstellar space
Term
What are small gravity levels or low gravity?
Definition
microgravity
Term
What is a giant cloud of dust and gas?
Definition
nebulae
Term
What is a pulsating star that flashes electromagnetic emissions in a set pattern
Definition
pulsar
Term
What is a region beyond the Earth's atmospheyere where there is very little molecular activity?
Definition
space
Term
What is a body of hot gases?
Definition
star
Term
What contains everything; stars, planets, galaxies, animals, plants and humans?
Definition
universe
Term
What are radiation belts filled with charged particles?
Definition
Van Allen belts
Term
What is a part of the universe beyond the immediate influence of Earth and its atmosphere?
Definition
space
Term
True of False: Space can be accurately described as a void or a vacuum.
Definition
False
Term
At what altitude does the Air Force and NASA define as the beginning of space?
Definition
50 miles
Term
At what altitude does an object orbiting Earth need to be to stay in orbit?
Definition
80-90 miles
Term
What are the four main characteristics of space?
Definition
1. lack of oxygen
2. lower pressure than on Earth
3. temperature is generally at -273C
4. low or microgravity
Term
What is temperature based on?
Definition
molecular movement
Term
What is absolute zero in celcius and fahrenheit?
Definition
-273 degrees Celsius and -459 degrees Fahrenheit
Term
What does the prefix micro mean?
Definition
one part in a million
Term
What is the net effect on an unprotected human body if exposed to near zero pressure?
Definition
swelling, tissue damage, and a deprivation of oxygen to the brain that would result in unconsciousness in less than 15 seconds.
Term
What is the point at which all molecules stop moving or have the least abount of energy?
Definition
absolute zero
Term
What is the average temperature in space in Kelvin, Celcius and Fahrenheit?
Definition
2.725 K
-270 C
-455 F
Term
What is a form of electromagnetic radiation filling the universe?
Definition
Cosmic microwave background radiation
Term
What might the tempertature be for an object in Earth's orbit if it is in sunlight areas?
Definition
393 K
120 C
248 F
Term
What might the temperature be for objects in Earth's orbit that are in Earth's shadow?
Definition
173 K
-100 C
-148 F
Term
What state are astronauts in which cause them to experience a feeling weightlessness?
Definition
free fall
Term
What are the occupants of cislunar space?
Definition
1. man-made satellites and astronauts
2. photons
3. atoms
4. electrons
5. protons
6. cosmic rays
7. molecules
8. neutrons
9. solarwind
10. meteoroids
11. x-rays
Term
What is the mean distance from the Earth to the Moon?
Definition
237,087 miles
Term
What contains protons, electrons and magnetic lines of force?
Definition
the magnetosphere
Term
Who said the sky is very, very stark. The sky is pitch black and the Moon is quite light. The contrast between the sky and the Moon is a vivid dark line?
Definition
Astronaut William Anders (Apollo 8)
Term
How many known planets are in our solar system.
Definition
eight
Term
What are the three main shapes of galaxies?
Definition
1. elliptical
2. spiral
3. irregular
Term
Which galaxy shape is oval shaped?
Definition
elliptical
Term
Which galaxy shape has arms spiraling outward from a center?
Definition
spiral
Term
Which galaxy shape has no particular shape?
Definition
irregular
Term
Who discovered the Van Allen Radiation Belt?
Definition
Dr James Van Allen
Term
When were the Van Allen Radiation Belts discovered?
Definition
1958
Term
What is energy or matter moving through space?
Definition
radiation
Term
What four types of electromagnetic radiation are produced by the sun?
Definition
1. sunlight
2. ultraviolet radiation
3. infrared radiation
4. gamma radiation
Term
What type of radiation is actually the nuclei of atoms such as hydrogen, helium, iron, and others which travel through space at hundreds of thousands of kilometers per second?
Definition
cosmic radiation also known as cosmic rays
Term
What part of the Van Allen Belts contain high-energy protons carrying energies of about 100 million volts, and electrons with energies of about 1 to 3 million volts?
Definition
the Inner Belt
Term
What part of the Van Allen Belts consists of mostly electrons with energies of 5 to 20 million volts?
Definition
The Outer Belt
Term
What part of the Van Allen Belts is a hazard to satellites?
Definition
The Outer Belt
Term
What part of the Van Allen Belt's Outer Belt causes damage to the sensitive circuits of communication satellites?
Definition
fast-moving particles
Term
Who discovered the Van Allen Radiation Belt?
Definition
Dr James Van Allen
Term
When were the Van Allen Radiation Belts discovered?
Definition
1958
Term
What is energy or matter moving through space?
Definition
radiation
Term
What four types of electromagnetic radiation are produced by the sun?
Definition
1. sunlight
2. ultraviolet radiation
3. infrared radiation
4. gamma radiation
Term
What type of radiation is actually the nuclei of atoms such as hydrogen, helium, iron, and others which travel through space at hundreds of thousands of kilometers per second?
Definition
cosmic radiation also known as cosmic rays
Term
What part of the Van Allen Belts contain high-energy protons carrying energies of about 100 million volts, and electrons with energies of about 1 to 3 million volts?
Definition
the Inner Belt
Term
What part of the Van Allen Belts consists of mostly electrons with energies of 5 to 20 million volts?
Definition
The Outer Belt
Term
What part of the Van Allen Belts is a hazard to satellites?
Definition
The Outer Belt
Term
What part of the Van Allen Belt's Outer Belt causes damage to the sensitive circuits of communication satellites?
Definition
fast-moving particles
Term
Who discovered the Van Allen Radiation Belt?
Definition
Dr James Van Allen
Term
When were the Van Allen Radiation belts discovered?
Definition
1958
Term
What agency launched the satellite that was used to discover the Van Allen Radiation Belts?
Definition
NASA
Term
What part of the Van Allen Radiation Belts are found between 600 and 3,000 miles (1,000 and 5,000 km) above the Earth's surface?
Definition
The Inner Belt
Term
How much energy do the protons found in the inner belt of the Van Allen Radiation Belts carry?
Definition
about 100 million volts
Term
How much energy do the protons found in the inner belt of the Van Allen Radiation Belts carry?
Definition
about 1 to 3 million volts
Term
What part of the Van Allen Radiation Belts are found between 9,000 and 15,000 miles (16,000 and 24,000 km) above the surface of the Earth?
Definition
The Outer Belt
Term
How much energy do the electron carry in the Outer Belt of the Van Allen Radiation Belts?
Definition
5 to 20 million volts
Term
What are the three theories about the origins of the particles found in the Van Allen Belts?
Definition
1. the Sun
2. cosmic rays from outside the solar system trapped by Earth's magnetic field
3. atoms and nuclei from Earth's atmosphere
Term
Which part of the Van Allen Radiation Belts is most hazardous to astronauts?
Definition
the Inner Belt
Term
Which part of the Van Allen Radiation Belts is most hazardous to communication satellites?
Definition
The Outer Belt
Term
How the radiation belts damage the sensitive circuitry of satellites?
Definition
high energy particles pass through the skin of the satellite?
Term
What was the cost of satellites lost during the sunspot cycle which began in 1996?
Definition
over 2 billion dollars
Term
What is the term used to describe the changing conditions in the flows of matter and energy in space
Definition
space weather
Term
What are severe conditions can significantly change the way a satellite operates or the health of an astronaut working and living in space called?
Definition
space radiation effects
Term
What happens if a high energy particle collides with one of the pixel elements in a satellite's star tracking camera?
Definition
creates a false star which confuses satellite into thinking it is not pointed in the right direction.
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