Sky Motion
This is what causes the sun to appear to rise in the east and set in the west
Earth's rotation
What phase is fully lit?
Full Moon
What eclipse happens when the moon blocks the sun?
Solar eclipse
What 2 things cause seasons?
Earth's tilt and revolution
What is Earth's movement around the sun called?
Revolution
How long does it take Earth to complete one full rotation?
24 hours
What causes the phases of the moon?
The moon's position relative to the Earth and the Sun
In what order are the 3 components of an eclipse during a lunar eclipse?
Moon, Earth, Sun
Which season has the most direct sunlight?
Summer
What were the constellations originally used for?
Navigation
Why do stars appear to move across the sky each night?
Earth's rotation
How much time passes between a full moon and a new moon?
2 weeks
Why don't eclipses happen every month?
Everything has to line up perfectly on the same plane, which is rare
Why is summer warmer than winter?
Sunlight is more direct and days are longer, so Earth has more time to absorb the Sun's thermal energy
Why do the constellations you can see change with the seasons?
Earth revolves around the sun and sees different areas of space.
In which direction does Earth rotate?
From west to east OR counterclockwise
What is the phase called where the moon is not visible?
New Moon
What is the difference between an umbra and a penumbra?
Umbra: darkest part of the shadow, total eclipse area
Penumbra: less dark shadow, partial eclipse
Why are days shorter in winter?
Our position on Earth is tilted away from the sun
What are the two days per year when day and night hours are equal called?
Equinoxes
Why do different stars become visible at different times during the night?
Earth's rotation changes our view of space
How long is one full moon cycle?
One month
What phase does the moon need to be in during a lunar eclipse?
Full moon
Why is it cold at the poles?
Sunlight comes at an indirect angle
What is the shortest day of the year called?
Winter Solstice