How to use ejecta in a sentence

1. The debris kicked up when objects like meteorites slam into the surface is known as ejecta. ...
2. Nothing peculiar exists in the ejecta of morning sickness in pregnancy.

Is ejecta singular or plural?

The noun ejecta is uncountable. The plural form of ejecta is also ejecta.

What ejecta means?

Ejecta (from the Latin: "things thrown out", singular ejectum) are particles ejected from an area.

What are the types of ejecta?

Three different kinds of ejecta exist: impact ejecta, volcanic ejecta (or pyroclastics), and (stellar) ejecta. Impact ejecta is solid, liquid, or vaporized rock debris ejected ballistically from an impact crater during a meteorite or cometary impact.

What is ejecta on the moon?

Bright albedo feature (Ejecta) When craters are formed, the impact scatters about the crater a blanket of bright material. Called an ejecta deposit, it is made of pulverized material.

ejecta - pronunciation + Examples in sentences and phrases

41 related questions found

How is an ejecta blanket formed?

A blanket of ejecta is formed during the formation of meteor impact cratering and is composed usually of the materials of that are ejected from the cratering process. ... An ejecta blanket is deposited in the interior regions of the crater rim to the final crater rim and beyond the crater rim.

What is ejecta thickness?

Predicted average thickness of Imbrium ejecta at Apollo 15 is 812 m; at Apollo 14, 130 m; at Apollo 17, 102 m; and at Apollo 16, 50 m.

Why do ejecta blankets on Mars look Fluidy?

Water might have been produced if the ice in the regolith was melted upon impact. (Note that regolith represents solid materials lying on top of the bedrock, including soil, rock fragments, and other materials.) Apparently, ejecta from those Martian craters became fluid, allowing it to flow after excavation.

Where are the types of ejecta found in relation to impact sites?

Impact ejecta found at distances greater than 5 crater radii from the rim of the source crater, as opposed to proximal ejecta, which are found closer than 5 crater radii from the crater rim, and which make up about 90% of all material thrown out of the crater during the impact event.

Why is ejecta a lighter color?

Lighter colors, such as yellow, indicate the presence of altered rocks. The possible sources of the ejecta is most likely from two unnamed craters.

What is Moon surface?

The moon's surface is covered with dead volcanoes, impact craters, and lava flows, some visible to the unaided stargazer. ... They are oceans of a sort, but rather than water, such bodies are made up of pools of hardened lava.

What are moon Highlands?

Glossary. highlands: the lighter, heavily cratered regions of the Moon, which are generally several kilometers higher than the maria. mare: (plural: maria) Latin for “sea;” the name applied to the dark, relatively smooth features that cover 17% of the Moon's surface.

What is summit crater?

Summit craters are where volcanic material is at or near the Earth's surface. Volcanoes may have one summit crater, such as Mount Fuji in Japan.

What are seas called on the Moon?

The maria, or 'seas', were named by early astronomers who mistook them for actual oceans on the Moon, but of course today we know that no such large bodies of liquid water exist on the lunar surface.

What are rayed craters?

Rayed craters are impact craters on the moon with streaks of material extending away from them. Usually the material is lighter in color than the rest of the surface of the moon. Look carefully and you'll find many more rayed lunar craters than the ones listed here!

What is a spoke of an impact crater?

A ray system comprises radial streaks of fine ejecta thrown out during the formation of an impact crater, looking somewhat like many thin spokes coming from the hub of a wheel. ... Ray systems have been identified on the Moon, Earth (Kamil Crater), Mercury, and some moons of the outer planets.

What can ejecta tell us about a planet?

The difference in ejecta profiles can tell us about the makeup of the material on the planet's surface. ... Other impacts are so immense that they trigger melting in the planet's interior, and the crater basins fill with lava.

What is the difference between ejecta and lava?

As nouns the difference between ejecta and lava

is that ejecta is material which has been ejected, especially from a volcano or an impact crater while lava is the melted rock ejected by a volcano from its crater or fissured sides.

What is ejecta volume?

It measures how much volcanic material is ejected, the height of the material thrown into the atmosphere, and how long the eruptions last. The scale is logarithmic, or based on 10; therefore, an increase of “1” on the scale indicates an eruption 10 times more powerful than the number before it on the scale.