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science
Term | Definition |
---|---|
rotation | rotating around the axis |
axis | the planets middle point |
revolution | an orbital motion around another object |
equenox | a nearly equal amount of days |
solstice | the time when the sun is at its highest or lowest point |
luner | the moon |
maria | dark spots on the moon used to be lava lower elevation |
crater | a large, bowl shaped hole in the ground or on the surface of a planet |
waxing | when its growing or getting bigger incress in ilumination |
waning | when it is in the phase in which its visible surface area is getting smaller |
full moon | full ilumination |
new moon | not bright no moon is showing |
cresent | a moon shaped as a cresnt |
gibbous | more than half but not all illuminated. |
soler eclipse | when the Moon passes between Earth and the Sun |
luner eclipse | when the Sun, Earth, and Moon align |
tide | the alternate rising and falling of the sea |
tidal range | the difference in height between high tide and low tide |
inner planets | a planet whose orbit lies within the asteroid belt |
outer planets | a planet whose orbit lies outside the asteroid belt |
astroid | a small rocky body orbiting the sun |
comet | snowballs of frozen gases |
meteroite | a rock that falls to Earth from space. |
galexy | a system of millions or billions of stars |
milky way | our galaxy |
elliptical galexy | a galaxy that has no spiral arms |
spiral galaxy | a galaxy that has one or more spiral arms. |
red dwarf | a star having much lower surface temperature, brightness, mass, and size than the sun |
supergiant | an extremely large star |
summer solctice | june 21 highest point of the sun |
winter | december 21 the sun at its lowest point |