Earth's Sun and Moon Flashcards
Grade 1 · Science · Flashcards
Study key words about Earth, the sun, and the moon.
Flashcards
- Sun
- The star at the center of our solar system; gives Earth light and heat
- Moon
- Earth's natural satellite; orbits Earth about every 29 days
- Star
- A huge ball of hot gas that makes its own light
- Orbit
- The curved path an object travels around another in space
- Rotation
- Earth spinning on its axis once every 24 hours
- Day
- When your side of Earth faces the sun
- Night
- When your side of Earth faces away from the sun
- Moon phase
- The shape of the moon's lit part as seen from Earth
- Full moon
- The moon phase when the entire lit side faces Earth
- New moon
- The moon phase when the moon is not visible
- Crescent moon
- A moon phase that looks like a thin curved sliver
- Year
- The time it takes Earth to orbit the sun once — about 365 days
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