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Science Vocab-Space

Space Vocab

force a push or pull
gravity the attraction force between two objects
law of universal gravitation the scientific law that states that every object in the universe has gravity
mass the amount of matter in an object
weight the force of gravity on an object
inertia the tendency of an object to resist a change in motion
Newton’s first law of motion An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force
astronomy the study of the sun, moon, stars, and other objects in space
axis the imaginary line that passes through Earth’s center
rotation the spinning of Earth on its axis
revolution the movement of one object around the other
orbit the path of an object as it rotates around a another in space
calendar a system of organizing time the defines the beginning, length, and divisions of a year
solstice when the sun is farthest north or south of the equator
equinox when the noon sun is directly overhead at the equator
phases one of the different apparent shapes of the moon as seen from Earth
gibbous having the observable illuminated part greater than a semicircle and less than a circle.
cresent the curved sickle shape of the waxing or waning moon.
new moon The sunlight side faces away from Earth
full moon The entire sunlight side faces earth
umbra The very darkest spot of a moons shadow
penumbra The larger part of a moons shadow
lunar eclipse Occurs at a 1st or 3rd quater moon when Earth is directly between the moon and sun
solar eclipse When the moon passes directly between the earth and sun blocking sunlight from Earth. Occurs when new moon blocks view of sun
tide The rise and fall of ocean water that occurs every 12.5 hours
neap tide a tide with the least difference between two consecutive low and high tides
spring tide a tide with the greatest difference between two consecutive low and high tides
telescope a device used to build to observe distant objects by making them appear closer
maria dark, flat surfaces on the moon’s surface
craters large round pits
meteoroids chunks of rocks or dust from space
Galileo Galilei Italian scientist who saw the moon close up with the telescope
waning the phases of the moon that look like the moon is getting smaller
waxing the phases of the moon that look like the moon is getting bigger
27.3 days how long it takes for the moon to revolve around Earth
29.5 days the amount of days it takes from on new moon to the next
total solar eclipse when the moon blocks the total view of the sun from the earth
partial solar eclipse when part of the sun is visible from Earth
eclipse an object in space come between the sun and a third object casting a shadow on that object
Created by: miamacdonald