Orbits
Calendars
The Moon
Eclipses
Vocab
100
The season in the Northern Hemisphere when it is tilted towards the Sun.

What is Summer?

100

What season does Ramadan occur during in the Islamic Calendar?

No specific season, it changes from year to year.

100

A calendar based on the orbit of the moon

What is a Lunar Calendar?
100

A Lunar Eclipse occurs when the ___________ is between the ___________ and ___________ .

Earth is between the Sun and Moon

100

The imaginary line that marks the boundary between the Northern and Southern Hemispheres.

What is the Equator?
200

While it is Spring in Canada, what season is it in Australia?

Autumn

200

How did the Gregorian Calendar improve from the Julian Calendar.

Adjusted leap day rules 

(Julian: every 4 years)

(Gregorian: every 4 years, unless the year is divisible by 100 and not by 400)

200

The moon phase that can only occur during the night.

What is the Full Moon.
200

A Solar Eclipse occurs when the ___________ is between the ___________ and ___________ .

Moon is between the Earth and Sun

200

The longest day or night of the year.

What is the Solstice?

300

Why is it warm year-round in the tropics near the equator, while winter near the poles is extremely cold?

The equator experiences little axial tilt, while the poles experience the most axial tilt.

300

When does a month start in the Hebrew Calendar?

The New Moon

300

The moon phase that can only occur during the day

What is the New Moon?

300

A Lunar Eclipse can only occur during which time of day AND moon phase?

Night, Full Moon

300

The center black shadow cast by a celestial body, where all sunlight is blocked.

What is the Umbra?

400

The period of the Earth (time it takes to complete one revolution around the Sun).

What is 365.24 days?

400

The number of days in the Islamic Calendar.

What is 364?

400

The period of the Moon (time it takes to complete one revolution around the Earth).

29.5 days

400

A Solar Eclipse can only occur during which time of day AND moon phase?

Day, New Moon

400

The lighter, outer part of a shadow cast by a celestial body where the sunlight is only partially blocked

What is the Penumbra?

500

The Earth's seasons are caused by this.

What is Axial Tilt?

500
How does the Hebrew Calendar account for the irregular number of days in a solar year?

It adds a 13th month every two or three years.

500

List the 8 moon phases in order, starting with the New Moon.

New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Third Quarter, Waning Crescent

500

When was the most recent Lunar Eclipse visible in Kansas?

August 27–28, 2026

500

The day where the length of the day and night are exactly the same.

What is the Equinox?