Astronomy 101


Here is your quiz: Which night time object is brightest besides the sun? Polaris Mercury Jupiter Venus Which planet is the least dense? Venus Saturn Jupiter Pluto Which planet had the big red spot? Mercury Neptune Jupiter Saturn How old it the planet Earth? 460 million years 4.6 billion years 46 billion years 460 billion years The absolute magnitude of a star is... a measure of the amount of energy released by the star's surface every second apparent magnitude if the star was ten light years from the sun measure of its extrinsic brightness how bright it appears to us on earth Astronomers around the world have discovered about how many planets in our and other solar systems? 9 20 30 50 Who suggested and developed the inverse square law? Isaac Newton Kepplar Fig Newton Carl Sagan What object in our solar system weighs 6.6 sextillion tons? Mars Earth Venus Saturn Which of Kepplar's laws state that the planet moves faster the closer it is to the sun? First Third Fourth Second Which planet has the longest period of revolution around the Sun? Jupiter Earth Pluto Mercury

Here is your quiz: