Earth's ___________ takes place on an imaginary line called its axis.

• revolution
• rotation
• spin
• orbit

The point at which the sun reaches its greatest distance north or south of the equator is the ______________.

• equinox
• solstice
• eclipse 
• ellipse

Earth's yearly orbit around the sun is one _______________.

• equinox
• revolution
• eclipse 
• rotation

During a(n) __________, the dark side of the moon faces Earth.

• old moon
• new moon
• crescent moon
• orbital moon

There are equal hours of daylight and nighttime during a(n) _____________. 

• witner solstice
• equinox
• summer solstice 
• full moon

The changing appearances of the moon as seen from Earth are its ___________.

• solstices
• equinoxes
• phases
• stages

After a new moon, when more of the moons' lighted side becomes visible, the phases are ___________.

• waning
• rotating
• waxing
• revolving

During a _________, the moon blocks the sun's rays.

• solar ellipse
• lunar ellipse
• solar eclipse
• lunar eclipse

A total solar eclipse can only be seen by people in the area of the Earth within the moon's ___________.

• penumbra
• gravitational field
• umbra
• waxing crescent

The Earth is a "perfect" sphere.

• True
• False