Which planet's orbit around the sun is most nearly circular?
Venus
What is the formula for Eccentricity?
distance between foci / length of major axis
What is the inferred age of our solar system?
4.6 billion years
Which planet on our solar system has the highest average density?
Earth
Which star on the ESRT has the greatest luminosity?
Deneb
If the foci of an ellipse are moved farther apart, what happens to the shape of the ellipse?
more oval, flatter, more elliptical
Where do most stars in our solar system spend the majority of their lives?
Main Sequence
What form of electromagnetic energy has the longest wavelength?
Radio waves
Name 3 stars on the main sequence.
Spica, Sirius, Sun, Alpha Centauri, Barnard's Star, Proxima Centauri
Name all of the Jovian planets.
Jupiter, Saturn, Uranus, Neptune
Which form of electromagnetic energy has the highest frequency?
Gamma rays
What is t he relationship between MASS and LUMINOSITY of stars?
As MASS increases, LUMINOSITY increases.
Name all of the Terrestrial planets.
Mercury, Venus, Earth, Mars
A star with a surface temperature of 15,000K is what color?
Blue White
Most of the energy released by the sun results from what process?
Nuclear Fusion
What solar system model is represented here?
Heliocentric
What is the name of the solar system model in which the Sun, other stars, and planets orbit the Earth?
Geocentric Model
Which 2 planets in our solar system have the same average density?
Jupiter & Uranus