December 21st for the Northern Hemisphere and June 21st for the Southern Hemisphere
What is... the winter solstice
100
The two factors that cause tides.
What is... gravity and inertia?
100
The type of eclipse seen during the day.
What is... solar?
100
The length of one day on Earth
What is... 24 hours?
100
The Moon phase seen from Earth as a light circle.
What is... a Full Moon?
200
Day when the sun is directly over the equator causing everywhere on Earth to have 12 hour days.
What is... the equinox?
200
Gravity of these two things causes tides.
What is... the Sun and the Moon?
200
The type of eclipse seen at night.
What is... Lunar?
200
The length of one day on the Moon
What is... 29.5 Earth days (or one month)?
200
The Moon Phase that appears on Earth as a mostly lit circle with a dark sliver on the left.
What is... a waxing gibbous?
300
Day when the sun is directly over the Tropic of Cancer or Capricorn.
What is... the solstice?
300
The moon phases when there is the biggest difference between the high and low tide.
What is... Full Moon and New Moon?
300
The moon phase when a solar eclipse could happen.
What is... New Moon?
300
The season when days are longer and nights are shorter.
What is... summer?
300
The Moon Phase that appears on Earth as mostly dark with a light sliver on the left.
What is... a waning crescent?
400
The season in the Southern Hemisphere when the North Pole is tilted towards the Sun.
What is... winter?
400
The Moon phases when the low tide is highest.
What is... First Quarter and Third Quarter?
400
The moon phase when a lunar eclipse could happen.
What is Full Moon?
400
The season when nights are longer than days.
What is... winter?
400
The Moon Phase that appears on Earth as a half lit circle on the left.
What is Third Quarter?
500
The reason we have seasons on Earth
What is... the Earth's axis is 23.5 degrees off from the Sun-Earth line so different parts of Earth get more and less direct rays of sunlight at different times of the year.
500
The worst type of tide to have during a bad storm.
What is... a spring tide?
500
The reason we do not see a Lunar Eclipse every month.
What is... the 0-5 degree angle between the Sun-Earth line and the Earth-Moon line?
500
The region of Earth experiencing 24 hours of daylight in December.
What is... Antarctica (or the South Pole)?
500
The Moon Phase that appears on Earth as half lit circle on the right.