Deck 11 = Universe and Orbits Flashcards
1
Q
What is a Galaxy?
A
A large Collection of Stars.
2
Q
What is the Universe?
A
Large collection of Billions of Galaxies.
3
Q
What does Gravity do?
A
Gravity provides the Force that causes Orbits.
4
Q
What orbits exists in a solar system?
A
Moons orbit planets,
planets orbit stars,
Comets orbits the stars,
Satellites orbit earth,
5
Q
What is an elliptical orbit?
A
Elongated, Comets often have elliptical orbits. They slow down when traveling away from the star and speed up when traveling towards the star.
6
Q
Equation for Speed?
A
Speed = Distance / Time
7
Q
Orbital Speed?
A
2 x pie x Orbital Radius / Time Period.
