1 Flashcards
What is the definition of ecliptic
The path the sun appears to follow around the earth
What is the definition of Equinoctial
The celestial equator
What is the definition of vernal equinox
Suns path moves from the southern hemisphere to the northern hemisphere
What is the definition of autumnal equinox
The suns path moves from the northern hemisphere to the southern hemisphere
What is the definition of geographic position
The position on earth is directly below a celestial body, e.g., star
What is the definition of zenith
A person GP projected up to the celestial sphere
What is the definition of declination
An angular distance of a celestial body from the equinoctial/celestial equator
What is the definition of Greenwich hour angle (GHA)
The angular distance of a celestial body west from Greenwich meridian
What is the definition of local hour angle (LHA)
The angular distance of a celestial body west from the observers meridian
What is the definition of azimuth
The true bearing of a celestial body
What is the definition of altitude
The angular height of a celestial body above the horizon
What is the first law of motion
An object remains in the same state of motion unless a force acts on it
A stationary object remains stationary unless a force acts upon it
A moving object remains moving unless a force acts upon it
What is the second law of motion
The force on an object is equal to its mass times its acceleration
F=m×a
What is the third law of motion
For every action, there is an equal and opposite reaction
What is a Newton
A Newton is a measurement of force required to produce an acceleration. One Newton is equal to one meter per second on a mass of one kilogram
What are the 7 different radiation types
Radio
Microwave
Infrared
Visible
Ultraviolet
X-ray
Gamma ray
What is the definition of D’ lat
The difference in the latitude between two positions on an arc of latitude- named north or south depending upon which direction the first to second position is heading
What is the definition of D’ long
The difference in longitude between two positions on an arc of longitude-named east or West depending upon which direction the first to second position is heading
