I can explore the formation and characteristics of the solar
Click link to download the Solar System Notes
If the Sun is about 150,000,000 km from Earth, and light travels at 300,000 km/s, how long will it take light to reach Earth from the Sun?
Step 1: Divide the distance by the speed to determine how many seconds it takes for sunlight to reach Earth.
150,000,000 km / 300,000 km/s = 500 seconds.
Step 2: Convert seconds into minutes by dividing by 60.
500 s / 60 s = 8.2 minutes
That means the light you are seeing from the sun at this moment was actually created 8.2 minutes in the past!
Light Years: One light year is the distance that light can travel in one year.
*We use light years for distances too large to measure in km
How many kilometers does light travel in one year?
Step 1: Multiply the speed of light by 60 to determine how far light travels in one minute.
300,000 km/s x 60 = 18,000,000 km/min
Step 2: Multiply the distance traveled in one minute by 60 to determine how far light travels in one hour.
18,000,000 km/min x 60 = 1,080,000,000 km/hr
Step 3: Multiply the distance traveled in one hour by 24 to determine how far light travels in one day.
1,080,000,000 km/hr x 24 = 25,920,000,000 km/day
Step 4: Multiply the distance traveled in one day by 365.25 to determine how far light travels in one year.
25,920,000,000 km/day x 365.25 = 9,467,280,000,000 km/year.
WOW! That’s about 9.4 TRILLION miles.
Earthrise Thinkquest: excellent resource on the sun, planets, moons, and dwarf planets. Organized charts with mass, diameter, orbital information, and important statistics.
Our Solar System Thinkquest: an ok resource for planetary information, but includes important atmospheric data. Suva Intermediate School in Bell Gardens, California
Dwarf Planets: provides a definition and discovery information regarding dwarf planets.