Moon Basics
The Moon’s “Dark Spots”
Lunar Maria Formation
Space Impacts & Craters
100

This phase of the Moon is when we see the entire face lit, making dark spots easiest to see

What is the full moon?

100

These darker flat regions on the Moon were once mistaken for oceans.

What are maria?

100

Maria formed when this hot substance burst from inside the Moon and cooled.

What is lava?

100

These objects from space hit the Moon and created the giant basins that later filled with lava.

What are meteorites/asteroids?

200

These dark, flat patches on the Moon were called “seas” by early astronomers, even though they contain no water.

What are maria?

200

The word “maria” comes from this language and means “seas.”

What is Latin?

200

The cooling lava that created the maria came from cracks caused by these large cosmic collisions.

What are asteroid/meteor impacts?

200

The circular depressions caused by impacts are known by this term.

What are craters?

300

The maria formed when this hot substance from inside the Moon flooded impact basins and cooled into dark rock.

What is lava?

300

This famous dark region, often called the “Man in the Moon’s right eye,” is one of the largest maria.

What is Mare Imbrium?

300

Maria look darker because the rock there is richer in this dark-colored volcanic mineral.

What is basalt?

300

This famous impact basin, visible from Earth, is the site of the Oceanus Procellarum region.

What is the Procellarum Basin?

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