maria
The moon surface features that probably formed when lava flows filled large basins are called maria, which are large, dark plains visible from Earth. These maria were created by ancient volcanic activity that filled the low-lying basin areas with basaltic lava flows.
The dark-colored, relatively flat regions of the Moon's surface are called lunar maria. These maria were formed when basins on the Moon were filled with basaltic lava following impact events in the past.
A maria
They are impact basins that have been flooded with (once-molten) lunar basaltic lavas, which are naturally dark in color.
The dark-colored, relatively flat regions of the moon's surface that were formed when interior lava filled large basins are called lunar maria. These areas appear darker than the surrounding highlands due to their lower reflectivity and lack of craters. The lunar maria are thought to have formed from ancient volcanic activity on the moon.
The proper name Maria is pronounced "mah-REE-uh".The plural of the Latin mar ('sea'), maria is pronounced "MAH-ree-uh" (first syllable stressed). The term is applied to large, flat land basins on the Moon and on other planets.
Maria, also known as lunar seas, are the dark relatively flat regions of the moon's surface that were formed when interior lava filled large basins.
The mare (plural: maria) on the Moon are smooth because they are vast basaltic plains created by ancient volcanic activity. Lava flows filled in large impact basins, creating the smooth surfaces we see today.
Full of mountains and basins
Flat regions of dry lava on the surface of the moon are called maria. They are large dark basins formed by ancient volcanic activity and are visible from Earth as dark areas on the lunar surface.
These dark colored, relatively flat regions on the Moon's surface are called maria. They were formed when lava filled large basins created by ancient impacts. Maria are composed of solidified basaltic lava flows and give the Moon a patchwork appearance of light and dark regions.