What drives most of the activity on the surface of the sun? It has electrically charged gases that generate areas of powerful magnetic forces. These areas are called magnetic fields.
The Sun’s gases are constantly moving, which tangles, stretches and twists the magnetic fields
. This motion creates a lot of activity on the Sun’s surface, called solar activity.
What drives most of the surface activity on the Sun?
It has electrically charged gases that generate areas of powerful magnetic forces. These areas are called magnetic fields.
The Sun’s gases are constantly moving, which tangles, stretches and twists the magnetic fields
. This motion creates a lot of activity on the Sun’s surface, called solar activity.
What is on the surface of the Sun?
The photosphere
is the visible “surface” of the Sun. The Sun is a giant ball of plasma (electrified gas), so it doesn’t have a distinct, solid surface like Earth.
What is responsible for the sunspots on the Sun’s surface?
Sunspots are caused by
disturbances in the Sun’s magnetic field welling up to the photosphere
, the Sun’s visible “surface”. The powerful magnetic fields in the vicinity of sunspots produce active regions on the Sun, which in turn frequently spawn disturbances such as solar flares and coronal mass ejections (CMEs).
What are 3 important surface features of the Sun?
Describes the surface features of the Sun, including
sunspots, solar prominences, solar flares, and coronal mass ejections
.
What are the activities of the Sun?
The Sun’s gases are constantly moving, which tangles, stretches and twists the magnetic fields. This motion creates a lot of activity on the Sun’s surface, called
solar activity
. Sometimes the Sun’s surface is very active. Other times, things are a bit quieter.
What are the two activities of the Sun?
- Sunspots Solar Flares Prominence.
- Spectrum analysis shows that sunspots have strong magnetic field, about 1000 times stronger than the Sun’s average. …
- Solar Flares Solar flares are tremendous explosions on the surface of the Sun.
What is the source of the Sun’s energy?
Solar energy is created by
nuclear fusion
that takes place in the sun. Fusion occurs when protons of hydrogen atoms violently collide in the sun’s core and fuse to create a helium atom. This process, known as a PP (proton-proton) chain reaction, emits an enormous amount of energy.
Where does the Sun gets its energy?
The sun generates energy
in its core in a process called nuclear fusion
. During nuclear fusion, the sun’s extremely high pressure and hot temperature cause hydrogen atoms to come apart and their nuclei (the central cores of the atoms) to fuse or combine. Four hydrogen nuclei fuse to become one helium atom.
How is energy transported through the Sun?
Inside the Sun, conduction is ineffective (the Sun is not solid). Energy is transported by
convection in the outer regions of the Sun (the outer 30 percent, or so). Energy is transported by radiative diffusion in the inner regions of the Sun (the inner 70 percent)
.
What causes sunspots to occur quizlet?
What is the cause of the sunspot cycle on the Sun?
Subsurface magnetic fields are twisted by the Sun’s differential rotation and break through the surface as sunspots, then gradually cancel each other and return below the surface.
What causes sunspots on skin?
Exposure to ultraviolet (UV) lights from the sun’s rays or tanning beds accelerates the production of melanin, a pigment responsible for your skin color
. After years of exposure, melanin may clump together or be produced in higher concentrations, causing sunspots.
What is the name of a sudden eruptive surge on the surface of the sun?
What is the name of a sudden eruptive surge on the surface of the Sun?
a flare
. The layer of the Sun that is normally visible to us is the. photosphere. What is the photosphere of the sun?
Which element makes up most of the Sun?
Despite the controversy, everyone agrees on the basics: The sun consists mainly of
hydrogen and helium
, the two lightest elements. It generates energy at its center through nuclear reactions that convert hydrogen into helium.
What is the main features of the Sun?
The Sun is
composed of about 75% hydrogen, 25% helium, and trace amounts of heavier elements
. At its core, the Sun’s temperature reaches over 15 million K (27 million°F) and its pressure is over 200 billion times the pressure at Earth’s surface.
What is the major source of energy on Earth?
The Sun
is Earth’s primary source of energy.
What are the three types of solar activity?
Solar flares, coronal mass ejections, high-speed solar wind, and solar energetic particles
are all forms of solar activity.
What is meant by solar activity?
the sum of all variable and short-lived disturbances on the sun
, as sunspots, prominences, and solar flares.
What factors influence the absorption of sunlight at Earth’s surface?
These factors include
latitude, season, time of day, cloud cover and altitude
. Not all radiation emitted from the sun reaches Earth’s surface. Much of it is absorbed, reflected or scattered in the atmosphere.
What keeps the sun burning?
The Sun glows because it is a very big ball of gas, and a process called
nuclear fusion
is taking place in its core. Nuclear fusion occurs when one proton smashes into another proton so hard that they stick together…and release some energy as well.
What is the energy source for the Sun quizlet?
What is the source of the sun’s energy and explain the process?
Nuclear fusion
– nuclei of small atoms join to form a large nucleus. The result of this nuclear fusion is the release of energy. The fusion of hydrogen into helium in the sun makes a large amount of energy and is the sun’s energy source.
What is the ultimate source of energy that makes the sun shine?
The ultimate source of the Sun’s energy is
nuclear fusion in its core
. The intense pressures and searing temperatures at the Sun’s core are fusing together the nuclei of the most abundant element in the Universe, hydrogen, to form nuclei of the second most abundant element, helium.
What is the source of energy in the sun that allows it to shine quizlet?
What is the ultimate source of energy that makes the Sun shine? Sun’s energy comes from
thermonuclear fusion reactions
. Due to Sun’s strong gravity, hydrogen atoms fuse to become helium. In the process tremendous amount of energy is released and it is the energy of the Sun.
Whats fueling the sun?
The sun is like a big nuclear submarine in the sky. That’s right, it’s fueled by
nuclear reactions that fuse hydrogen atoms together into helium and other heavier elements
, releasing huge amounts of energy in the process.
What is the main source of energy?
Fossil fuels
are the largest sources of energy for electricity generation. Natural gas was the largest source—about 38%—of U.S. electricity generation in 2021.
What are the two forces that keep the sun from blowing itself up?
Gravity and fusion
keep the sun from blowing itself up. The gravity collapse the sun. The gravity causes the fusion of hydrogen into helium. The fusion creates an outward force.
What is the source of energy in sun and stars?
For the Sun and other normal main-sequence stars, the source of energy lies in
the conversion of hydrogen to helium
. The nuclear reaction thought to occur in the Sun is called the proton-proton cycle.
What process generates the sunspot cycle?
As the formation of sunspots approaches the Sun’s equator, the polarity of the Sun flips
. Thus, the north magnetic pole becomes the south magnetic pole and vice versa. The polarity of the sunspots also changes at this time. The cycle then repeats for another 11 years with the magnetic poles of the Sun flipped.
What processes are involved in the sunspot cycle?
Which of the following processes is involved in the sunspot cycle?
The winding of magnetic field lines due to the Sun’s rotation
. helium, gamma rays, and neutrinos. Based on its surface temperature of 6,000 K, most photons that leave the Sun’s surface lie in which region of the electromagnetic spectrum?
What causes the granular appearance of the surface of the Sun quizlet?
Granules on the photosphere of the Sun are caused by
convection currents 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. It indicates that convection is taking place from the interior.
What are these dark spots under my breast?
What is
acanthosis nigricans
? This skin disorder results in light-brown-to-black spots. It often happens to otherwise healthy people, but in some cases, it may be a sign of an underlying condition. The markings look like a spot or stain that you might think you can scrub off.
Why do I have brown spots on my breasts?
Enlargement of the size of the areola glands
will look like brown spots resembling pimples. These enlarged brown spots are actually harmless because they are hormonal in nature. The size of the enlarged areola gland does not need special treatment because it will return to normal after the hormone stabilizes.
Does tanning cause sun spots?
Overexposure to UV rays from sunlight or tanning beds is the most common cause of sunspots
. Fair-colored skin is more susceptible to sunspots than darker skin tones. UV rays cause the skin to increase melanin production, which is the pigment in hair, skin and eyes.
What is the name of the layer of the Sun’s atmosphere that appears as a pinkish ring?
What is the name of the layer of the Sun’s atmosphere that appears as a pinkish ring just outside the visible disk of the Sun during a total solar eclipse?
The chromosphere
.
Which part of the Sun is the origin of most of the light we see?
The photosphere
is the lowest layer of the sun’s atmosphere, and emits the light we see. It is about 300 miles (500 km) thick, although most of the light comes from its lowest third. Temperatures in the photosphere range from 11,000 F (6,125 C) at the bottom to 7,460 F (4,125 C) at the top.
Does the Sun have corona?
The Short Answer:
The Sun’s corona is the outermost part of the Sun’s atmosphere
. The corona is usually hidden by the bright light of the Sun’s surface. That makes it difficult to see without using special instruments. However, the corona can be viewed during a total solar eclipse.
