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Random
100

This happens when the Moon appears to change shape over time.

 The phases of the Moon

100

This causes the different phases of the Moon we see from Earth.

The Moon’s position relative to Earth and the Sun 

100

This type of tide happens when the Sun and Moon work together to create stronger tides.

Spring Tide

100

These are large, round holes on the Moon’s surface caused by impacts.

Craters

100

This sea creature has three hearts and blue blood.

Octopus

200

This phase occurs when the Moon is completely dark from Earth’s view.

New Moon 

200

This force from the Moon pulls on Earth’s oceans to create tides.

Gravity

200

This type of tide happens when the Sun and Moon pull in different directions, creating weaker tides.

Neap Tide

200

These dark, flat areas on the Moon were once filled with lava.

Maria

200

This ancient wonder was built in Egypt as a tomb for Pharaoh Khufu.

The Great Pyramid of Giza

300

This phase shows the Moon fully lit from Earth.

Full Moon

300

These occur when ocean water rises to its highest level.

High tide

300

The path the Moon takes as it travels around Earth is called this.

Orbit

300

The Moon has no air or water, so this natural process does NOT occur there.

Weathering (by wind or water)

300

This composer became deaf later in life but continued writing famous music.

Ludwig van Beethoven

400

This phase looks like half of the Moon is lit.

Quarter Moon

400

These occur when ocean water falls to its lowest level.

Low tide

400

The motion of the Moon traveling around Earth is called this.

Revolution

400

This shape is used to describe the moon when less than half of the visible portion is illuminated.

Crescent

400

This moon of Saturn is the largest moon in our solar system and is even larger than the planet Mercury.

Titan

500

The Moon appears bright because it does this with sunlight.

Reflects sunlight 

500

This part of the Moon is always lit by the Sun.

Half

500

This is the amount of time it takes the Moon to orbit Earth once.

27-29 Days

500

This shape is used to describe the moon when more than half of the visible surface is illuminated.

Gibbous

500

This fictional detective lived at 221B Baker Street.

Sherlock Holmes