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Stack #4540980
| Question | Answer |
|---|---|
| satellite | A body that orbits a planet. |
| star | A giant ball of superheated gas, or plasma, composed of hydrogen and helium. |
| planet | |
| meteor | A streak of light produced when a small piece of rock or ice, burns up as it enters Earth’s atmosphere. |
| comet | A cold mixture of dust and ice that develops a long trail of light. |
| constellation | A pattern or group of stars that people imagine represents a figure, animal, or object. |
| geocentric | Earth-centered model |
| heliocentric | Sun-centered model |
| ellipse | oval shape orbit of each planet |
| Sun | Largest object in our solar system |
| axis | An imaginary line that passes from the North Pole to the South Pole. |
| rotation | The spinning of Earth on its axis. |
| revolution | The movement of one object around another. |
| orbit | Path planets follow when they revolve around the sun. |
| solstice | Earth is most tilted toward or away from the sun which causes the longest or shortest daylight of the year. |
| equinox | Earth is not tilted toward the Sun which causes equal day and night |
| gravity | The force that attracts all objects toward each other |
| law of universal gravitation | Every object attracts every other and its force depends on mass and distance. |
| inertia | Force that keeps planets in space. |
| Solar eclipse | When the moon passes directly between the Earth and Sun during a new moon. |
| Lunar eclipse | Occurs during a full moon when Earth is directly between the moon and Sun. |
| Umbra | Darkest part of a shadow where light is completely blocked |
| Penumbra | Area of a shadow where light is completely blocked |
| Tide | Daily rise and fall of ocean water |
| Spring tide | Higher high tides during full and new moons. |
| Neap tide | Lower high tides during the first and third quarter moons. |
| Maria | Dark, smooth, lava covered areas on the moon. |
| Highlands | Higher lighter areas on the moon covered with craters. |
| Weight | Force of gravity on a object |