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4th Gr. Solar System
SC
Term | Definition |
---|---|
axis | imaginary line that goes through the earth from the North Pole to the South Pole |
rotation | spinning on its axis which creates 24 hours in a day and night |
revolution | one trip around the Sun |
rocky planets | Mercury, Venus, Earth, and Mars |
gas giants | Jupiter, Saturn, Uranus, and Neptune |
Sun | A star in the center of our solar system |
phases | how the moon looks over 1 month |
first quarter moon | half is visible on the right side (day 7) |
full moon | the whole front of the moon is visible (day 14) |
last quarter moon | half is visible on the left side (day 21) |
new moon | the moon is not visible (day 1) |
crescent moon | less than half of the moon is visible |
gibbous moon | more than half of the moon is visible |
long and thin | Shadows in the morning and evening |
short and wide | Shadows at noon |
tilted axis | causes the seasons on Earth as it revolves around the Sun |
East | Sun rises from this direction |
West | Sun sets in this direction |
astronomy | the study of the universe |
constellations | patterns of stars |
telescopes | a tool used to look at objects in the sky |
"My Very Eager Mother Just Served Us Noodles" | a funny way to remember the order of the planets |
Ursa Minor | the Little Dipper and can be seen all year looking North |
Ursa Major | the Big Dipper and can be seen all year looking North |
Orion's Belt | 3 stars in a line that can be seen in the winter |
North Star | the last star on the handle of the Little Dipper |
Polaris | the North Star |