Seasons
The Earth's axis is tilted 23.5 degrees
When the moon blocks out the sun
Solar eclipse
The first one
New moon
365.24 days
One Earth revolution around the sun
When light gets refracted or bent in our atmosphere
Scattering or scattered
What would happen with seasons if the Earth's axis was NOT tilted?
We would't have seasons -- we would have the same weather and climate all year long
When the Earth blocks out the sun
Lunar eclipse
The last one
Waning crescent
24 hours
1 Earth rotation on its axis
Second moon phase
Waxing crescent
Why does Australia have the opposite season of ours?
Because Australia is in the southern hemisphere, so when we in the north are tilted towards the sun having summer, the southern hemisphere is tilted away from the sun, having winter
Why don't we have a solar and lunar eclipse each month?
Because the moon is 5 degrees off the ecliptic, so it's not usually in the right spot for eclipses to happen more frequently
For us in the northern hemisphere, the moon fills with light...
From right to left
How old is our solar system?
4.6 billion years old
The figure-8 shape of the sun's path throughout our sky each year
Analemma
What season for us starts when the sun is directly over the Tropic of Capricorn?
Winter
Why does the moon turn red during a solar eclipse?
It doesn't! (It's a trick question)
3.5 days
How long each moon phase lasts
How old is the universe?
13.7 billion years
The event that started this unit
Manhattanhenge
What season for us starts when the sun is directly over the equator?
Spring and fall
What is it about the Earth that causes the moon to turn red during a lunar eclipse?
The Earth's atmosphere refracts (bends) light to the red end of the spectrum
What would a first quarter moon look like in Australia?
Look on board
How much higher in the sky does the sun get each month until June 20th?
10 degrees higher each month
23.5 degrees north of the equator
Tropic of Cancer