Question | Answer |
What is astronamy | the study of stars, meteors and other objects in space. |
What is axis? | An imaginary line that tpasses through Earth's center and the North and South poles, about which Earth rotates. |
Rotation? | A spinninng motion of a planet about its axis. |
Revolution? | The movement of an object around another object. |
Orbit? | The path of an object as it revolves around another object in space. |
Tilt? | |
Solstice? | Two days of the year on which the noon sun is directly overhead at either 23.5 degrees South or 23.5 degrees North. |
Equinox? | Two days of the year on which niether hemisphere is toward or away from the sun. |
Phase? | One of the different shapes of the moon as seen from Earth. |
Eclipse? | The partial or total blocking of an object by another. |
Gravity? | The attractive force between two objects; its magnitude depends on their masses and the distance between them. |
Tide? | The rise and fall of the level of water in the ocean. |
Satellite? | Any object that revolves around another in space. |
Telescope? | A device built to study distant objects by making them appear closer. |
Geocentric? | A description of the solar system in which all the planets revolve around Earth. |
Heliocentric? | A description of the solar system in which all of the planets rovolve around the sun. |
Inner Planet? | Any of the four planets, Mercury, Venus, Earth, and Mars, whose orbits are closer to the sun. |
Outer planet? | Any of the four planets, Jupiter, Saturn, Uranus, and Neptune whose orbits are outside of Mars. |
Comet? | A ball of ice and dust whose orbit is a long narrow eclipse. |
Asteroid? | Objects revolving around the sun that are too small and too numerous to be planets. |
Meteoroid | A chunk of rock or dust in space. |
Constellation? | A pattern of stars in the sky. |
Galxay? | A giant structure that contains hundreds of billions of stars. |
Universe? | All of space and everything in it. |
Milky Way | The spiral galaxy that contains our solar system. |