Moon Phases
Solar System, Galaxy, & Universe
Solar & Lunar Eclipses
Earth's Orbit and Seasons
100

When the moon is fully illuminated

What is full moon?

100

Liquid water can exist on the planet and can support advanced life is known as

What is the habitable zone?

100

The Moon's shadow falls on the Earth by passing in front of the Sun

What is a solar eclipse?

100

When the Sun is highest in the sky and hemisphere and also the first day of summer.

What is the summer solstice?

200

When the moon is not visible

What is new moon?

200

The solar system lies within a spiral galaxy called

What is the Milky Way galaxy?

200

Earth's shadow covers the face of the Moon.

What is a lunar eclipse?

200

When the sun is lowest in the sky and hemisphere and the least hours of sunlight.

What is the winter solstice?

300

This term is used instead of half Moon.

What is first quarter or last quarter?

300

Astronomers refer to planets in the habitable zone as the 

What is "goldilocks planets"?

300

The Moon completely covers the Sun, and the sky becomes dark.

What is a total solar eclipse?

300

Latitude 23.5oN in the Northern Hemisphere

What is the Tropic of Cancer?

400

This term means increasing or growing.

What is waxing, waxing crescent, or waxing gibbous?

400

Four innermost planets

What is Mercury, Venus, Earth, and Mars?

400

The Moon passes completely into Earth's umbra.

What is a total lunar eclipse?

400

Latitude 23.5oS and in the Southern Hemisphere

What is the Tropic of Capricorn?

500

This means decreasing.

What is waning, waning gibbous, or waning crescent?

500

Outer four planets

What is Jupiter, Saturn, Uranus, and Neptune

500

The darkest, inner part of the shadow. 

What is the umbra?

500

Earth's axis neither tilts away nor toward the Sun and this happens halfway between the solstices.

What is the equinoxes?