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The universe

TermDefinition
rotation The spinning of a planet on its axis. For Earth, this causes day and night.
day The time it takes for a planet to complete one full rotation
revolution The movement of a planet around another object
year The time it takes a planet to complete one full revolution
season A division of the year marked by changes in weather and daylight, caused by Earth’s tilt and revolution.
equinox The time of year when day and night are nearly equal in length
solstice An object that orbits another object
satellite The force that pulls objects toward each other; it keeps planets and moons in orbit.
gravity The changing appearance of the Moon as seen from Earth, caused by its position relative to the Sun.
lunar phases An event where one object moves into the shadow of another
eclipse The darkest part of a shadow where light is completely blocked.
umbra The lighter, outer part of a shadow where light is partially blocked.
penumbra The rise and fall of ocean water caused mainly by the Moon’s gravity.
tide The difference in height between high tide and low tide.
tidal range A tide with the greatest tidal range, occurring when the Sun, Moon, and Earth are aligned.
spring tide A tide with the smallest tidal range, occurring when the Sun and Moon are at right angles to Earth.
neap tide
Created by: Fabian Carmona
 

 



Voices

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