Create an account
the blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
occurs when the Moon passes directly between the Sun and Earth and casts a shadow over part of Earth
spinning of Earth on its imaginary axis, which currently takes about 24 hours to complete and causes day and night to occur
the movement of an object around another object such as the Earth orbiting around the Sun.
A representation of the universe in which stars and planets revolve around Earth. Ptolemy proposed the model.
A representation of the relationship between the Sun and planets in which the planets revolve around the Sun. Copernicus proposed the model.
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together