GEOG 2050 Chapter : Ch 2 PPT
Document Summary
The energy from our sun sets into motion the weather systems and the ocean currents that greatly influence our lives. It is this solar energy, along with the sun"s tilt, orientation, revolution, and rotation, that produce our daily, seasonal, and annual patterns of changing day length and sun angles. The ph says suns condense from nebular clouds with planets forming in orbits around the central mass. Distance: speed of light = 300,000 kmps (kilometers per second) or. 186,000 mps: or light travels 9. 5 trillion kilometers per year otherwise known as a light-year, moon is 1. 28 seconds away from earth in terms of light speed. Took apollo 3 days: our solar system is 11 hours in diameter (at light speed, milky way is 100,000 light-years from side to side, known universe observable from earth stretches 12 billion light-years in all directions http://space. jpl. nasa. gov/
