Sun, Moon, and Stars Flashcards

Grade 2 · Science · Flashcards

Review key vocabulary about the Sun, Moon, stars, and how they move in the sky.

Flashcards

Sun: The star at the center of our solar system; provides Earth with heat and light
Moon: Earth's natural satellite; reflects sunlight; orbits Earth every 28 days
Star: A huge ball of burning gas that produces light and heat
Orbit: The curved path one object travels around another object in space
Rotation: Earth spinning on its axis once every 24 hours, causing day and night
New moon: Phase when the Moon is not visible from Earth — the dark phase
Full moon: Phase when the entire lit side of the Moon faces Earth — fully visible circle
Crescent moon: Phase when only a thin sliver of the Moon is visible
Constellation: A group of stars forming a named pattern in the sky
Solar system: The Sun and everything that orbits it, including Earth and other planets
Satellite: An object that orbits a planet — the Moon is Earth's natural satellite
North Star (Polaris): A star that always appears directly above Earth's North Pole, used for navigation