Chapter 13 Earth, Moon, and Beyond Flashcards
an imaginary line that passes through the North and South Poles
axis
Earth travels in a path around the sun or ________.
revolves
The path that Earth takes as it revolves around the sun
orbit
an imaginary line going all the way around Earth halfway between the North and South Poles
Equator
Earth spins on its axis or _______.
rotates
the days when the daylight and darkness are equal
equinoxes
any natural body that revolve around the planet
moon
a low, bowl-shaped area on the surface of a planet or moon
crater
one of the shapes the moon seems to have as it orbits Earth
moon phase
An _______ occurs when one body in space blocks light from reaching another body in space.
eclipse
bending of light
refraction
a huge ball of very hot gases in space
star
A _____ ______ is made up of a star and all planets and other objects that revolve around that star.
solar system
a body that revolves around a star
planet
gas, dust, and group of stars including any objects orbiting the stars
galaxy
everything that exist-all the stars, planets, dust, gases, and energy
universe
the star at the center of our solar system
sun
the day when the amount of daylight is the greatest or the least
solstice
when the moon is ______, more of it is visible from Earth each night
waxing
when the moon is ______, less of it is visible from Earth each night
waning
a collection of gas clouds that starts reacting chemically
protostar
any body that orbits another
satellite
a pattern of stars ( that is named after a religious or mythical object or animal)
constellation
a huge giant cloud of hydrogen, helium, and tiny particles of dust
nebula
