What evidence do we have that the granulation seen on the Sun’s surface is caused by convection quizlet?
What evidence do we have the granulation seen on the sun's surface is caused by convection? The bright centers of granules are hotter than their dark boundaries AND doplar measurements indicate that the centers are rising and the edges are sinking.
What is solar granulation quizlet?
Granules on the photosphere of the Sun are caused by convection currents (thermal columns, Bénard cells) of plasma within the Sun's convective zone. The grainy appearance of the solar photosphere is produced by the tops of these convective cells and is called granulation.
What feature of the photosphere is evidence for convection in the Sun quizlet?
What feature of the photosphere is evidence for convection in the sun? made of compressed neutrons in contact with each other. extremely rapid rotation and a strong magnetic field.
What feature of the photosphere is evidence for convection in the Sun?
Cards
| Term What feature of the photosphere is evidence for convection in the Sun? | Definition granules |
|---|---|
| Term Sunspots appear as dark blotches on the surface of the sun because they | Definition are cool areas with temperature of about 4500K |
•Nov 4, 2012
What evidence can you give that granulation is caused by convection?
The evidence for granulation being caused by convection is that convection is caused by the mottled appearance of the solar photosphere, caused by gases rising from the interior of the Sun. how can astronomers detect structure in the chromophere?
Which of the following is evidence that granulation is caused by convection below the photosphere?
Which of the following is evidence that granulation is caused by convection below the photosphere? The centers of granules are rising and their edges are falling.
What is granulation in the Sun?
A granule is a convection cell in the Sun's photosphere. They are caused by convection currents of plasma in the Sun's convective zone, directly below the photosphere. The grainy appearance of the solar photosphere is produced by the tops of these convective cells and is called granulation.
Why does convection cause granulation?
A granule is a convection cell in the Sun's photosphere. They are caused by convection currents of plasma in the Sun's convective zone, directly below the photosphere. The grainy appearance of the solar photosphere is produced by the tops of these convective cells and is called granulation.
What features of a granulation cell indicate that it is a small site of convection?
The outer edge of the granules is darker due to the cooler descending plasma. In addition to the visible appearance, which would be explained by convective motion, Doppler shift measurements of the light from individual granules provides evidence for the convective nature of the granules.
Why granulation is required?
Granulation, the process of particle enlargement by agglomeration technique, is one of the most significant unit operations in the production of pharmaceutical dosage forms, mostly tablets and capsules. Granulation process transforms fine powders into free-flowing, dust-free granules that are easy to compress.
What is granulation caused by?
Granulation is due to the convection operating below the photosphere that we already mentioned in the section on the solar interior. This convection produces columns of rising gas just below the photosphere that are about 700 to 1000 km in diameter.
What is the principle of granulation?
Granulation is a process in which powder particles are made to adhere to each other, resulting in larger, multi-particle entities, so called granules. If such a process is performed without adding liquids, this is called dry granulation.
What does granulation mean?
Definition of granulation 1 : the act or process of granulating : the condition of being granulated. 2 : one of the minute red granules of new capillaries formed on the surface of a wound in healing.
What is meant by granulation?
Definition of granulation 1 : the act or process of granulating : the condition of being granulated. 2 : one of the minute red granules of new capillaries formed on the surface of a wound in healing.
Why is granulation important?
Granulation is a key processing step in the production of many solid dosage drugs. It is often necessary to convert powdered drug formulations into a physical form that has improved flow and compaction characteristics to produce tablets with uniform content and consistent hardness and other properties.