Sunlight

Question: sunlight....? sunlight is the energy source used in photosynthesis. WHich of these is an energy source used in chemosynthesis? A. H2S B. H2O C. light D. heat

Answer: A If you click on the link below, the first sentence, on Wikipedia, is as follows: "Chemosynthesis is the biological conversion of one or more carbon molecules (usually carbon dioxide or methane) and nutrients into organic matter using the oxidation of inorganic molecules (e.g. hydrogen gas, hydrogen sulfide) or methane as a source of energy, rather than sunlight, as in photosynthesis." Hydrogen gas and Methane aren't among your options, so H2S is your answer.

Question: How does the angle at which sunlight strikes Earth's surface affect the intensity of the sunlight? A The angle at which sunlight strikes Earth's surface does not affect the intensity of the sunlight. B As the angle of insolation increases, the intensity of sunlight decreases. C As the angle of insolation decreases, the intensity of sunlight increases. D As the angle of insolation decreases, the intensity of sunlight decreases.

Answer: Imagine you have a pellet gun and a smooth, expansive and extremely level cement floor. The gun is the sun, the kinetic energy of the fired pellet is the energy of the sun. If you were to fire the pellet at a 90 degree angle to the floor, there will be a noticeable impact mark on the floor, as nearly all of the energy of the pellet is focused on a very small area. Now lets say you aim the gun at a two degree angle to the floor. When the pellet reaches the floor, the same amount of energy it would have directed at the 90 degree angle shot is instead dissipated over several meters (as opposed to a focused point), leaving no intense impact mark. This is much like the sun.

Question: How does sunlight reach the inside of a leaf? Today in class we were learning about photosynthesis, and i thought, if sunlight gives the plant energy to use photosynthesis, how does the sunlight reach the inside of the leaf to give it energy anyways?? Thanks 4 the answers guys.

Answer: In simple language, the chlorophyll in the leaves absorbs light and once it is absorbed a chemical process takes place that causes the light to turn into energy. The green we see in leaves is the chlorophyll - and the color is well, the most confusing part. All color that we see is because that color is being reflected back. Light has a color range, and when colors are absorbed by an object, we don't see those colors, if a color is not absorbed then it is reflected back and what we see is the color that is reflected. Think of blue sky in a green pond. If you see the water appear blue, then that is the color that is not absorbed. Remember the colors of the rainbow - if you do not see a color reflected back then that color has been absorbed and it disappears. And because light has a lot of ultraviolet and infrared light those colors along with others are absorbed by the leaf and used for energy. from a website: Chlorophyll is a complex molecule which absorbs light. Any substance which absorbs light is called a pigment. Certain pigments absorb certain wavelengths of light and reflect the rest back. Chlorophyll absorbs all wavelengths of light except for green, which is reflects back. That is why we see green when we look at grass or the leaves of a tree. Since these plant parts are photosynthetic, they contain high levels of the chlorophyll pigment. When a plant absorbs light energy (carbon dioxide), chlorophyll causes the chemical reaction to occur that turns the light energy into two different substances: ATP and NADPH. ATP, or adenosine triphosphate, and NADPH, or nicotine adenine dinucleotide phosphate, are both usable forms of energy which the plant then uses for other processes. During the chemical reaction initiated by the chlorophyll molecule, water molecules get split, which releases oxygen molecules into the atmosphere. Read more: How Does Photosynthesis Work? | eHow.com http://www.ehow.com/how-does_4623964_photosynthesis-work.html#ixzz0yEQzo89D

Question: why is sunlight essential for the growth of plants/vegetation and even those that grow underground? we have an experiment which will prove if sunlight is needed for the growth of potatoes. Of course the answer is yes because the soil has pores from which the sunlight enters. But why is the sunlight included in the basic needs of plants (water, air) besides needing it for photosynthesis?

Answer: Plants need sunlight (or the right kind and amount of electric light) in order to make chlorophyll. Chlorophyll is the chemical that makes plants green. Note that some plants are not green, although they do have chlorophyll. In colorful plants like coleus or purpleleaf plum, the chlorophyll’s color is masked or hidden by other pigments. In photosynthesis plants use light energy to convert water and carbon dioxide into oxygen and high energy carbohydrates such as sugars and starches from wich they build their structure and are able to grow and have fruit/seeds.

Question: how much sunlight is the minimum to be called a place for sunloving flowers? i was thinking 6 hours , since my roses do good with 6 hours of sunlight, but i am in North Carolina. TO THE FIRST ANSWERER: I AM SORRY, BUT I DONT KNOW OF ANYBODY THAT GETS 12 HOURS OF SUNLIGHT!! I AM REFERRING TO DIRECT SUNLIGHT!!

Answer: Probably plants in Kansas or such a flat place could get 12 hours of sunlight over half the year, but that is beside the point. Your correct. A sun loving plant needs at least 6 hours of direct sun a day.

Question: What are some examples of things that will absorb sunlight? I need to know some things that will absorb sunlight, and is it good for the environment if these things absorb sunlight? If not what are some things that can reflect sunlight? But, I mainly need to know what absorbs sunlight. Thanks.

Answer: walk down the street on a hot sunny day. put your hand on top of a white and a black car. the black car is hotter. green, blue, red, etc will all be hot as well. probably, if you took their temp, they wouldn't be quite as hot, but almost. put your hand on a silver car. it's noticeably hotter than a white car. white really is different. it absorbs less energy.

Question: How does sunlight affects both plants and animals ? how does sunlight affects plants and animals ? can someone please answer me , thank you .

Answer: Without sunlight, there is no photosynthesis. Without photosynthesis, there is no oxygen. Without oxygen there is cellular respiration. Without cellular respiration, there is no animal life. Without photosynthesis there is no plant life, and since plants are the very basis of out food chain, if they don't exist there is no life AT ALL.

Question: How bright is sunlight as measured in photons per second over an area of the Earth? How bright is sunlight as measured in photons per second over an area of the Earth? Like, in a square inch on the Earth, how many photons per second are hitting?

Answer: Well since this is not a physics forum ...it is photography, yeah, I know they both start with ph. Since the "clean air" act, there are less particles in the air so I am sure the amount of light reaching us is higher. Note the increase in the incidence of skin cancer.

Question: How much direct sunlight do I need to grow basil and other herbs? I have about 2 hours of direct sunlight a day where I want them grown, is that enough?

Answer: Of more importance than sun shine is how warm. If you get above 80 degrees this should be fine. Other herbs that will grow well in that type of environment are sage, chives, thyme, rosemary and oregano.

Question: How much does sunlight exposure contribute to skin aging? For example, as a thought experiment, what if we have twins, one of whom stays out of the sun, and the other gets a tan every summer. Will the one who gets a tan every summer look significantly older when they hit age, say, 40 or 50? Or is sunlight exposure a small component of how old a person looks?

Answer: You only need 30 minutes of sun exposure per day in order to fill up your body's requirement of vitamin D. Any more and you're over doing it. Invest in sunscreen and mosturizers as a general rule to keep your skin's natural elasticity and preserve the collagen that keep your from getting wrinkles prematurely. Apply these creams as many times as you like on a daily basis, and drink lots of water whenever you're out in the sun. Sunlight exposure does contribute to skin aging, but a 30 minute bask in the sun is healthy for both you and your skin (vitamin D helps fight off acne). Too much sunlight makes you look weathered and haggard. --> http://www.ojodigital.com/foro/attachments/a/13050d1196241198-foto-para-comentar-n-19-28-11-07-steve-mccurry-afghan-girl-fthdr0zc2.jpg?stc=1

Question: How and why does sunlight breach silk? recently I hung my a silk blanket under the sun and my father told me that sunlight breaches it. I wonder what is happening.

Answer: do you mean bleaches it? If so, yes sunlight does sort of act like a bleach on many fabrics and makes them whiter

Question: How many hours of sunlight a day does ShotPlot food plot mixture need to grow? Hello, I bought some Evolved Harvest ShotPlot food plot mix seed. It has rape and turnips in it. How many hours of sunlight a day will it have to have to grow? Thanks!

Answer: At least 4 hours of direct sunlight a day to get the maximum growth out of it. Past experience.

Question: How do I look good in direct sunlight? My makeup always looks good at home but when I get under direct sunlight my makeup ends up looking orange and splotchy and I look disgusting. This could be partly because I am so pale that makeup doesn't come light enough for me and my skin doesn't tan. Sometimes I wear (good quality) tinted moisturizer and sometimes I don't, but I don't wear foundation. And I wear (good quality) concealer. How can I not look ugly under sunlight?

Answer: I always do my makeup in front of the window, I will even than go in the bathroom light to check it. I also have pale skin, I have a sister-in-law who is a make-up artist and I was just wondering why you don't use foundation and only tinted moisturizer. She doesn't seem to like tinted moisturized too well. I actually have found a foundation called Pure Makeup by Maybelline. It is inexpensive and it works better than expensive ones I have used. It comes in a tube and a little goes a long way. You should give it a try. Get some bronzer to put brush on lightly over. I bet you will like those results much better. Oh yeh, I just found a cheaper concealer stick (liquid) too by Physicians Formula, it has a green side too which helps to cover any red blemishes.

Question: What happens to the sunlight to form a rainbow? While playing the children notice a rainbow in the sky. Rainbow are formed from the sunlight and raindrops.

Answer: After it rains there is water in the air and when the sunlight travels threw the water it breaks up the light like a prism. The reason why you see so many different colors is because light is made up of many colors.

Question: How to Calculate the average flux of sunlight at the equator? Calculate the average flux of sunlight at the equator. Assume that the sun supplies 1368 joule/(meter2 second) and that 30 percent of the sunlight is reflected away. Assume it is night half the time, and the sun shines directly overhead at noon. The average value of the sine function over half a cycle is 2/π. How do we solve this? Do the same thing for 50 and 85 degrees latitude.

Answer: The haze and dust at near-twilight reduces incident from pure function expectations, but let's assume it doesn't, and a solar collector is flat on the ground. Obviously it's the vernal equinox. Flux density is measured in joule/meter^2, a rate, not a quantity. The average value of SIN over a half cycle is not 2/pi. The integral of SIN zero to either pi/2 or pi because symmetry is involved, in this case where K=0 and peak value is unity, is 2^-2/2. So 1368 times 70% times 2^-2/2 = 677 joule/meter^2. Isn't Calculus fun? Regards, Larry.

Question: How many hours of sunlight per day should you get? I've heard that you need to get some direct sunlight every day in order to acquire enough Vitamin D (or something like that; haven't done research.) How much sun should I get without being at risk for skin cancer?

Answer: You can't compare the 2. You should get atleast 2 hours of direct sunlight to get your daily d dose. If you want to prevent skin cancer, which could usually be caused from just 1/2 hour of sun in some areas of the world, you need to eat right. Avoid hydrogenated oils and msg (autolized yeast product, flavoring, spice are some of it's other names) and drink lemongrass tea. This tea has been proven to prevent and even help reverse skin cancer. I wouldn't stop there, superoxidant dismatuse should do just as much, though it's not been tested, it does bring life back to all cells that were in bad shape, so if anything it is a cancer preventer. Cancer only takes over cells that are weak. Taking showers in chlorinated water bleaches the skin of minerals you need to keep skin healthy. Antioxidants are oils+mineral chains that reverse this problem.