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8th Science U5 L3
Definition | Term |
---|---|
The moon phases from new moon to full moon, as the lit surface seen from Earth grows larger | waxing |
Moon phases from full moon to new moon, as the lit surface seen from Earth grows smaller | waning |
the shape of the lit side of the Moon that appears to be less than half illuminated by the Sun as seen from Earth | crescent moon |
Phase of moon between first quarter and full or between full and last quarter | gibbous moon |
The lunar phase that occurs when the Moon is completely illuminated as seen from the Earth | full moon |
The first phase of the Moon, when it orbits as seen from the Earth | new moon |
A natural or artificial body that revolves around a celestial body that is greater in mass | satellite |
A force of attraction between objects that is due to their masses | gravity |
The different appearances of the moon form Earth throughout the month | lunar phases |
An event in which the shadow of one celestial body falls on another | eclipse |
A shadow that blocks sunlight, such as the conical section in the shadow of the Earth on the moon | umbra |
The outer part of a shadow such as the shadow cast by Earth or the moon in which sunlight is only partially blocked | penumbra |
The periodic rise and fall of water level in the oceans and other large bodies of water | tides |
A moving line that separates the illuminated day side and the dark night side of a planetary body | terminator |
The difference in levels of ocean water at high tide and low tide | tidal range |
A tide of increasing range that occurs two times a month, at the new and full moons | spring tide |
A tide of minimum range that occurs during the first and third quarters of the moon | neap tide |
Occurs when the moon passes between Earth and the sun, blocking the sun’s light form Earth | solar eclipse |
Occurs when the moon passes through Earth’s shadow | lunar eclipse |