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Return to the Moon
Vocabulary for the Moon Mission Project
| Question | Answer |
|---|---|
| Anorthosite | the predominate rock of the lunar highlands |
| Breccia | a rock made from angular fragments cemented together |
| Celestial | of or having to do with the skies and visible heavens (the Sun, Moon, stars and planetary bodies) |
| Composition | the chemical makeup of an object |
| Crescent moon | moon phase with less than on-half of the side facing Earth |
| Diameter | the distance across a circle through its center. Also, distance through a sphere measured through the center of the sphere |
| Ejecta | material blown out of a crater during an impact on the surface |
| Erosion | the wearing awary of a planetary surface by some natural process such as lava flow, bombardment, wind, water, or another mechanism |
| First Quarter Moon | moon phase between the new and Full Moon where exactly half of the side facing Earth is illuminated. This phase occurs approximately one week after a New Moon |
| Full Moon | a phase of the Moon in which the entire side facing Earth is illuminated by sunlight |
| Geologist | a scientist who studies the formations, structure, history and processes (internal and on the surface) that change Earth and other planetary bodies |
| Gibbous Moon | Moon phase occurring when more than half (but not all) of the side facing Earth is illuminated |
| Igneous Rock | rock formed from cooled and hardened magma |
| Impact Crater | a circular depression in the ground caused by meteoroids or asteroids hitting the surface of the planet |
| Lunar | related to the Moon |
| Magma | melted rock located deep below the surface of a planet, such as Earth, or a moon |
| Maria | low areas on the Moon that appear dark and smooth. Maria are formed by ancient lava flows. |
| Metamorphic Rock | rock formed from pre-existing rocks as a result of intense heat, pressure, or chemical processes |
| Meteoroid | a small solid body moving through space in orbit around the Sun |
| Moon | the name of the Earth's only natural satellite |
| Moon Phases | the monthly changes in the appearance of the Moon as seen from Earth. Phases are caused by the Moon's revolution around Earth |
| New Moon | a phase of the Moon in which none of the side facing Earth is illuminated by the Sun |
| Regolith | a powdery soil layer on the Moon's surface caused by bombardment by meteoroids |
| Sedimentary Rocks | a type of rock formed from hardened deposits of sediments |
| Sublimation | the process of a solid returning directly to a gas, without changing to a liquid first |
| Terrestial | relating to the Earth and its inhabitants. Belonging to a class of planets that are like the Earth. |
| Third Quarter Moon | Moon phase between the Full and New Moon where exactly haof of the side facing Earth is illuminated. This phase occurs approximately one week after a Full Moon |
| Waning | the Moon is said to be waning in its phase cycle as the amount of light reflected off of the lunar surface towars the Earth decreases. This occurs as the cycle progresses from Full Moon to New Moon |
| Waxing | The Moon is said to be waxing in its phase cycle as the amount of light reflected off the lunar suface towards the Earth increases. This occurs as the cycle progresses from New Moon to Full Moon |
| Weathering | the action of elements in altering the color, texture, composition or form of exposed objects on the surface of a planet or moon |
Created by:
seeker1161
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