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sun earh moon
Chapter 23
| Question | Answer |
|---|---|
| an elongated closed curve | ellipse |
| a round, three-dimensional object whose surface is the same distance from its center at all points | sphere |
| when all of the Moon's surface that faces Earth is lit up | full moon |
| when the Moon temporarily blocks the sunlight reaching earth | solar eclipse |
| reached when the sun's position is directly over Earth's equator | equinox |
| when the Moon is between Earth and the Sun and cannot be seen | new moon |
| when Earth's shadow falls on the Moon | lunar eclipse |
| the point at which the sun reaches its greatest distance north or south of the equator | solstice |
| hollow area formed on the Moon by an object striking its surface | impact basin |
| when the amount of the Moon's lighted surface seen on Earth increases | waxing |
| waning Moon phase in which only one-half of the lighted side of the Moon can be seen from Earth | third quarter |
| the changing appearances of the Moon as seen from Earth | Moon phases |
| dark-colored, relatively flat regions of the Moon | maria |
| waxing Moon phase in which one-half of the Moon's lighted side can be seen from Earth | first quarter |
| the imaginary line around which a planet such as Earth spins | axis |
| the spinning of Earth on its axis | rotation |
| when the amount of the Moon's lighted side that can be seen becomes smaller | waning |
| Earth's yearly orbit around the sun | revolution |