Tides
The rise and fall of sea level:
What is a tide?
When there is about 12 hours of daylight and 12 hours of darkness:
What is an equinox?
No moon is visible, even on a clear night:
What is a new moon?
Day and night are caused by:
What is the earth turning on its axis?
EXTREME tide that happens at the full and new moons:
What is a spring tide?
The longest day of the year:
What is the summer solstice?
When just a sliver of moon is visible:
What is a crescent moon?
When the sun seems to slowly disappear and then reappear. Like last spring!
What is a solar eclipse?
Kind of tide that happens during the 1st and 3rd quarter moon:
What is a neap tide?
Northern and Southern hemispheres have opposite seasons because of this feature of the earth:
What is a tilt?
More than half of the moon is visible:
What is a gibbous moon?
The motion of one object around another, like the earth around the sun:
What is a revolution?
Arrangement of the sun, earth, and moon during a neap tide:
What is a 90 degree angle?
Date of the autumnal equinox in Ohio:
What is September?
The length of time it takes the moon to turn on its axis, AND make one revolution around the earth:
What is 28 days?
The central, darkest part of the moon's shadow:
What is an umbra?
How tides would change if the moon started orbiting the earth more quickly:
Date of the spring equinox in Australia
What is September?
Less than half of the moon is visible, although it looks bigger tonight than it did a couple of days ago:
What is a waxing crescent moon?
The next phase after a full moon:
What is a waning gibbous moon?