Astronomy Test 1 Flashcards
What horizon does the sun rise and set?
Rise: East
Set: West
How many stars are there?
10 billion trillion
What is the amount of stars like?
There are more stars than the total number of grains of sand on all the beaches on Earth
How fast does light travel?
300,000 kilometers or 186,000 meters per second
What is light used to measure?
Used to measure the distance in the universe
How far apart are time zones?
Every 15 degrees there is a new time zone
How are time zones determined?
They were used to coordinate train schedules
Why do we need time zones?
At some places, if we didn’t have time zones, it would be 2 in the afternoon and dark out
What is the tilt of the Earth?
23.5
Know charts
Draw them
How will precession affect the north star?
It won’t be the north star forever b/c north won’t be the same in the future
How many constellations are there?
88
How can the altitude of Polaris be used to determine latitude?
The angle of Polaris above your horizon is the same as your latitude
What is the relationship between the angle of the sun in the sky and the chance of getting sunburn?
When the sun is higher up, it is easier for the suns rays to come through our atmosphere and when the sun is lower it is harder. It is easier to get sunburn when the sun is higher.
