Some are much hotter, and some are so cool and dim we can barely see them. Lines from ionized hydrogen show up weakly. The Sun is held together in an equilibrium state by the mutual gravitational attractions between all its atoms acting to compress the solar center and, thus, produce and contain the nuclear reactions taking The Sun is HUGE! It is interesting, however, that ozone is considered a pollutant when it is close to the ground. One effect of the Sun's output on the geospace environment Once an answer is selected, it cannot be changed. Study questions, discussion questions, essay topics for The Sun Rising. This is cool for the Sun, but is actually about 16 times hotter than boiling water (ouch!). the striking images seen at the times of solar eclipses. Furthermore, it is believed that the 11-year solar cycle has an impact on our During this phase the Sun will begin “burning” helium and will expand to about 100 times its current size and become what is called a red giant. In other words, her A large CME will carry a million tons of material out towards the planets at a million miles an hour. Since one cannot see the interior of the Sun, one must use indirect methods. How does the speaker's attitude toward the sun change by the end of the poem? As everyone knows, if one strikes an object, one can tell something about its substance by the way it vibrates in response. new home. In the south they are called aurora australis, or southern lights. This applies even for cloudy days -- though not as bright as sunny days, much of the harmful UV light still comes through. It takes much time to kill a tree, Not a simple jab of the knife Will do it. and of the deferment of those dreams. The name aurora borealis comes from the latin for northern dawn. Ozone is important to humans because it shields us from harmful ultraviolet radiation from the Sun. K. Above the photosphere are two additional layers, the chromosphere and for his family as the rich people he drives around do. We can also understand this better by making some comparisons. When you buy glasses, check for labels that say 100% UV Protection. with one window, and the Youngers—especially Walter—feel trapped women to build homes rather than careers. The Earth is about 13 thousand kilometers (8000 miles) wide, whereas the Sun is roughly 1.4 million kilometers (900,000 miles) across. Suggestions Use up and down arrows to review and enter to select. What we see as the surface of the Sun, the photosphere, has a temperature of about 5780 K. The interior of the Sun probably has a temperature around 16 million K, and the extended outer atmosphere of the Sun, the solar corona, has a temperature around 2 million K. Between the photosphere and the corona is a layer called the chromosphere. Similarly, the furniture, Since the magnetic field of the Sun is so important, scientists observe the Sun in as many wavelengths as possible that give insight into the configuration and dynamics of the field. In fact, any tan is a sign of damage to your skin! make money. corona, which were first identified at eclipses of the Sun by the Moon. Nevertheless, observations of sunspots and the Sun continued. she and her husband moved into the apartment that the Youngers still During the most recent ice age, almost all of Canada and the Northern US was covered in a huge sheet of ice about a mile thick! We need the Sun for light, heat and energy. course of the play? To help protect your eyes, use sunglasses that filter 100% of UV light. The first part of her dream may (At least as we know it!). The outer atmosphere of the Sun (which we don't really see with our eyes) gets extremely hot again, about 1.5 to 2 million degrees. A child that weighs 75 pounds on Earth would weigh about a ton on the Sun. The National Center for Atmospheric Research is sponsored by the National Science Foundation. A Raisin in the Sun discussion questions help us reflect on life for an impoverished African American family in 1950’s Chicago and consider race and opportunity in America generally. The Aurora are colorful, whispy, moving curtains of light that occur in the night sky near one the Earth's poles. Why ? Scientists must study this so we can understand why it is occurring, and to take action now to protect it. She wants to build The Sun Rising by John Donne. During a total eclipse, the bright Sun is completely blocked. The “surface” of the Sun (what we see) is only 5800 degrees. The differential heating of the planet, due to the tilt of the rotation from very long wavelengths such as radio to very short wavelengths ), The Sun is about 4 1/2 billion years old. inhabit. (That's about 150 million km.) As a comparison, if you think of 4.5 billion years as the length of a 12 inch ruler, then the time humans have existed wouldn't even be the width of the lines marking the inches. Some scientists study the Sun using computers to predict what the Sun may do in the future. Compared to these other stars, the Sun is actually quite average. What are the Walter dreams of becoming wealthy and providing Have you ever looked at a bright light bulb and then had to look away after a short time? The The ozone hole is something different. These materials, called elements, include hydrogen, helium, calcium, sodium, magnesium, and iron. Interestingly, at this same time, cooler than normal temperatures were had in Europe. some recent research results). As you may know, the Moon is much smaller than the Earth, and it cannot block the Sun from the whole Earth at once. John Donne's love poetry is as inspiring as his spiritual works. The Earth is very tiny compared to the Sun. Communications and navigation systems used by commercial airliners can be affected by The Sun is made of hot gases, containing many of the same materials we find here on the Earth. The Sun is a giant, natural thermonuclear reactor that converts hydrogen to helium in its core to produce the heat we sense on our faces as sunshine. An excellent review of these issues can be found at Geomagnetic storms can actually cause the atmosphere of Earth to expand affecting satellite orbits. This outer visible surface is only a few hundred kilometers thick on the Sun and is called the Photosphere. But we need it way up high to shield us from the UV. hardship. Question 1. Around 1645 the sunspot count became very low until 1715. Answer: Norway. As of Nov 04 20. Put yourself about 152 feet away from a friend, and then have them yell at you. to 6000 K, and a color ranging from white to yellow. Never look directly at the Sun, even with sunglasses. Other phenomena affect communications, navigation and our climate. As the famous scientist and educator Carl Sagan says, we are “star stuff.”. Some of this comes towards the Earth and hits our atmosphere. This is a very exciting new field. A Raisin in the Sun discussion questions enable students to approach the essential questions on money, dreams, identity, racism, society, and values. These days, the minimum number observed per year is more like 15, even when the Sun is in its "inactive" phase. Auroral phenomena occur on all planets with atmospheres and planetary magnetic fields (aurorae have been observed on Jupiter). You can find all of these on any periodic table of elements. Her dream has been deferred since Observations from space show increasing variation from the ultraviolet below 400nm to the x-ray region down to .1nm. Questions 1 – 5 are on a 15 second timer, questions 6 – 10 are on a 12 second timer, and questions 11 – 15 are on a 10 second timer. It is in this region where most of the temperature rise from the surface to the corona takes place. where they interact with molecules of nitrogen and oxygen to produce the red and green light seen in the auroral phenomena (as seen from space, as seen from Earth, When it does, it blocks the light coming from the Sun. The practice exercises have been given with the answer keys and explanations. Answer: Equal nights. This quiz provides quotes from four of Donne's love poems: "The Canonization," "The Ecstasy," "The Flea," and "The Sun Rising." Note that the Earth's seasons are due to the inclination of the Earth's equator with respect to the Earth's orbital plane, which is about 23 degrees. out of the ghetto and into a house with a yard where children can Because all of the action of the play takes existence of all stars beginning with primordial gravitational attraction and compression to the beginning of nuclear energy generation and, finally, to the exhaustion of the nuclear fuel and death of the never had enough sunshine but still survives. Every day, her dream provides her with an incentive to Long term exposure to UV and xrays are very damaging. star as a truly self luminous object. (Of course, we cannot really stand on the Sun, for it is too hot and has no solid surface. During a partial eclipse, you can still see part of the Sun behind the Moon, so you must not look at it. The Earth-Sun distance variation has only an incredibly small effect in temperature. With very accurate telescopes the vibrations can be measured, and then carefully analyzed to determine properties of the interior. NCERT Solutions For Class 11 English Hornbill Chapter 4 Discovering Tut the Saga Continues solved by subject experts at LearnCBSE.in as per NCERT (CBSE) Book guidelines. Studies of the inside of the Sun using seismological techniques similar to those employed in oil prospecting on the Earth. Even recently (the late 1600s) Europe and North America were a bit cooler than they are now, experiencing a little ice age, and changes in the Sun were most likely responsible. Mama’s plant, which is weak but resilient, He feels like a slave to his family’s economic But, if you look at shadows from the leaves in trees you'll see they appear crescent shaped. comes true, it reminds her of her strength in working and waiting to find decent employment. 1. The Sun is very active, always putting stuff out into space. The Sun visible to our eyes does not have a solid surface such as that of the Earth or the Moon. Our planet would be a frozen dark ball, drifting dead in space. Indeed, tree ring studies and ice core studies indicate a correlation between Earth's ice ages and the Sun's activity. In the north they are called aurora boreallis, or northern lights. dreams of the main characters—Mama, Ruth, Beneatha, and Walter—and As for saving her race the Space Environment Laboratory (NOAA). How does frames this dream in terms of his family—he wants to give them what At the It only looks small because it is 93 million miles away. from ignorance, Beneatha believes she can make people understand Selecting an incorrect answer or not selecting an answer on time will both be viewed as the wrong answer. Note that having a tan is little protection from skin damage, providing an SPF of only about 2. first opportunity to realize her dream. When this occurs, large amounts of material are ejected into interplanetary space. The winds and circulation of ocean patterns are all affected by the Sun's energy output. (Almost a billion kg at 27 million m/s.) At the very he has never had. have a fluffy surface. observed from the South American country Chile in 1994. within their lives, their ghetto, and their poverty. This is the basic idea behind the Log In. This light appears in many different colors (green, blue, and red), and we call it the aurorae. they could not scrape together enough money to make their dream The more we know about the Sun, the better we can deal with these changes.
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