What does maria mean in astronomy?
What does maria mean in astronomy?
Mare, plural maria, any flat, dark plain of lower elevation on the Moon. The term, which in Latin means “sea,” was erroneously applied to such features by telescopic observers of the 17th century. Maria are the largest topographic features on the Moon and can be seen from Earth with the unaided eye.
What does prominence mean in astronomy?
Credit: NASA/SDO. A solar prominence (also known as a filament when viewed against the solar disk) is a large, bright feature extending outward from the Sun’s surface. Prominences are anchored to the Sun’s surface in the photosphere, and extend outwards into the Sun’s hot outer atmosphere, called the corona.
What is maria quizlet?
What is the definition of Maria? Maria are the large, smooth, dark areas of the Moon’s surface. This is a Latin word for “seas” (think of mare).
Where is the lunar maria?
earth side
The lunar maria are found primarily on the earth side of the moon. One possible physical explanation for the unequal distribution is that the maria formed in accordance with hydrostatic equilibrium: the moon’s center of mass is closer to the earth’s side and the crust on the farside is thus thicker.
What do you mean by maria?
What Does Maria Mean? Maria is a historically feminine name of Latin origin. It can be translated to either mean “of the sea,” “bitter,” “beloved,” or “rebellious.” In some cultures, it’s also considered to be a variation for the name Mary. Maria is also a feminine variation for the Roman name Marius.
What are small maria called?
The few maria on the far side are much smaller, residing mostly in very large craters. The traditional nomenclature for the Moon also includes one oceanus (ocean), as well as features with the names lacus (lake), palus (marsh), and sinus (bay).
What is an example of prominence?
Prominence is the state of being important, being famous or being obvious. When an artist becomes famous and well-known, this is an example of prominence. When a mountain is higher than the mountains around it, this is an example of prominence. Quiescent prominences form more smoothly and can last for several months.
What does the word prominence mean in medical terms?
[prom´ĭ-nens] a protrusion or projection. frontonasal prominence an expansive facial process in the embryo that develops into the forehead and bridge of the nose; called also frontonasal process.
What caused the maria to form quizlet?
How did the lunar maria form? Large impacts fractured the Moon’s lithosphere, allowing lava to fill the impact basins. It’s the result of gradual erosion by micrometeorites striking the Moon. You just studied 20 terms!
Why do lunar maria no longer form quizlet?
The moon would probably have many more impact craters on its surface. Many of the impact craters on the near side are covered by maria, but the maria are no longer forming. Therefore, if there had been many smaller objects in the solar system more recently, they would have formed new craters on top of the maria.
Why are the lunar maria smooth?
Their smooth features are attributed to gradual erosion, mostly due to impact cratering from meteorites. The maria are much less cratered than the highlands, and cover just 17% of the lunar surface, mostly on the side of the Moon that faces Earth (Figure 3b).
What is the largest maria?
The irregular maria lie in lowlands. The largest of these is Oceanus Procellarum, which lies on the west side of the Moon and is almost 2 km below nominal mean lunar radius. Mare filling is characterized by several distinctive features that indicate a volcanic origin.
Which is the best definition of prominence in astronomy?
Astronomy. an eruption of a flamelike tongue of relatively cool, high-density gas from the solar chromosphere into the corona where it can be seen during a solar eclipse or by observing strong spectral lines in its emission spectrum. 2 promontory, height, precipice, peak.
How does a prominence appear on a spectroscope?
Prominences appear either as flame-coloured projections when the disk of the Sun is totally eclipsed or as dark ribbons (called filaments) when viewed through a spectroscope. A prominence erupting from the Sun. An image of Earth has been superimposed to show how enormous the Sun is in comparison.
What do prominences look like on the Sun?
An eruption of tonguelike clouds of glowing ionized gas extending from the Sun’s chromosphere and sometimes reaching hundreds of thousands of kilometers into space. When viewed against the solar surface instead of along the edges of its disk, prominences appear as dark, sinuous lines known as filaments.
How are solar prominences supported in the atmosphere?
Prominences are among the most beautiful of solar phenomena. They are the analogues of clouds in Earth’s atmosphere, but they are supported by magnetic fields, rather than by thermal currents as clouds are. …in the spectrum of a solar prominence, a bright cloud of hot ionized gas that extends into the corona.
