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Solar System
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Term | Definition |
---|---|
Meteor | A streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere. |
Asteroid Belt | Any of thousands of dense rocky objects in orbit around the sun between Mars and Jupiter. |
Comet | A ball of ice, dust, and frozen gases that orbits the sun. |
Revolution | The movement of an object around another object. |
Rotation | The spinning motion of a planet on its axis. |
Outer Planets | Gas Giant planets found outside of the asteroid belt. |
Inner planets | Terrestrial (Earth like) planets that are dense solids located between the sun and the asteroid belt. |
Gravity | The attractive force between two objects. |
Axail tilt | The invisible axis that are tilted allowing for seasons to occur. |
Probe | A robotic spacecraft that leaves Earth's orbit and explores space. |
Satellite | Any object that revolves around another object in space. Can be artificial or natural like the moon. |
Heliocentric Theory | Nicolaus copernicus' idea that the Earth, Planets, and stars all revolved around the Sun. |
Geocentric Theory | Aristotle and Ptolemy believed that the Earth was the center of the universe and all objects revolved around it. |
Tides | The rise and fall of sea levels caused by the combined effects of gravitational forces exerted by the moon. |
Greenhouse Effect | Is the process by which radiation form a planet;s surface to a temperature above what it would be without an atmosphere. |
Illuminated | To light up. The moon is illuminated by the sun. |
Celestial Objects | Known collectively byastronomical objects, and astronomical bodies, they are the stuff that fills the empty space of the universe. |
Lunar Eclipse | Occurs when the Earth is between the sun and moon. Sunlight is blocked by the Earth. |
Solar Eclipse | Occurs during the NEW MOON PHASE when the moon passes between the sun and Earth, and the moon fully or partially blocks the sun. |
Autumn | The season between summer and winter known as fall in North America. |
Equinox | The time and date when the sun passes directly over the equator; the length of day and night are equal (12 hours each). |
Solstice | The time and date when the sun is at its greatest distance from the equator; length of day and night show greatest difference. |
Orbit | Revolve around, circle around, go around, and travel around. |
Diameter | A straight line passing from side to side through the center of a circle or sphere the measurement from one side of a circle/sphere to the other side as you pass directly through the center. The equator diameter of the Earth |
Suriviable Temperatures | The highest and lowest temperatures that humans can stand without dying. |
Astronomer | The study of celestial objects (Stars, Galaxies, Planets, Moons, Asteroids, Comets, And Nebulae) and all phenomena that originate outside the atmosphere of Earth. |
Asteroids | Asteroids are minor planets, eapecially those of the inner solar system. The larger ones have also been called plnetoids. |