Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
|
astronomy
|
The study of the universe.
|
|
|
axis
|
an imaginary line that passes through the line around which a planet or other object rotates.
|
|
|
big bang
|
the theory that the universe was created from a giant explosion.
|
|
|
eclipse
|
the partial or total clocking of one object by another.
|
|
|
equinox
|
the two days a year opon which the sun is directly over the equator.
|
|
|
gravity
|
the attractive force between two objects.
|
|
|
inertia
|
the tendency of moving objects to continue moving in a straight line or a
|
|
|
light-year
|
the distance that light travels in one year.
|
|
|
nebula
|
a large amount of gas and dust in space. It is where stars are born
|
|
|
orbit
|
the path of an object as it revolves around another object in space
|
|
|
phase
|
one of the different shapes of the moon as seen from Earth
|
|
|
revolution
|
the movement of an object around another.
|
|
|
rotation
|
the spinning motion of an object around its own axis.
|
|
|
solstice
|
the two days a year on which the sun appears directly overhead as far north or south of the equator.
|
|
|
universe
|
all of space and everything in it.
|
