Some of the heat energy from the sun bounces back off the earth's atmosphere, but some of it gets through and reaches the earth's surface. The Transfer of Heat Energy. This means that it is in right spot (neither too close nor too far) to receive the Sun’s abundant energy, which includes the light and heat that is essential for chemical reactions. The amount of sunlight received on Earth's surface is affected by the reflectivity of the surface, the angle of the sun, the output of the sun, and the cyclic variations of Earth's orbit around the sun. The energy continues to taper off and weaken as it makes its way to the Earth’s atmosphere. 69% average accuracy. In fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius. Likewise, once you have a protoplanet, as the iron begins to sink through the molten bulk of the planet and settles in the core, it again releases gravitational potential energy and heats the planet. Home / Science / Astronomy / Our Sun / How Does the Sun Produce Energy? One of the reasons for this is because the Earth lies within our Sun’s Habitable Zone (aka. by ajames_86657. Hydrogen nuclei fuse to form one helium atom. Since there is no medium (like the gas in our atmosphere) in space, radiation is the primary way that heat travels in space. Since there is no medium (like the gas in our atmosphere) in space, radiation is the primary way that heat travels in space. This radiation heats all objects that it touches. Explain. Thus, it is a natural source of heat energy. a nebula) collapsed under the force of its own gravity – which is known as Nebula Theory. Fusion in the core actually gives off high energy gamma rays. Edit. The sun emits light, and light is energy. -sun releases energy by fusing four hydrogen nuclei into one helium nucleus. And all life that we know of — from bacteria to elephants — needs liquid water to survive. 0. No, we are not trying to create a second sun on the surface of our planet. The light travels to the Earth, and is absorbed into it, generating heat. This energy is captured by plants. Nuclear fusion produces massive volumes of energy that radiates outward to the surface of the Sun and beyond. Nuclear fusion. Specifically, in the Sun’s core, hydrogen atoms fuse to make helium. At the surface of the Sun, the temperature drops to about 5,700 K. The turbulent convection of this layer of the Sun is also what causes an effect that produces magnetic north and south poles all over the surface of the Sun. Although the Sun is a relatively small star in the universe, it is huge in relation to our solar system. Question Date: 2005-01-23: Answer 1: The sun heats the earth through radiation. In fact, 99% of the energy produced by the Sun takes place within 24% of the Sun’s radius. The Sun releases energy at a mass–energy conversion rate of 4.26 million metric tons per second, which produces the equivalent of 38,460 septillion watts (3.846×1026 W) per second. Gradual changes in Earth’s rotation and orbit around the Sun change the intensity of sunlight received in our planet’s polar and equatorial regions. The whole process starts in the sun's core. All food chains start with energy from the sun. The sun is the closest star to Earth. There is a reason life that Earth is the only place in the Solar System where life is known to be able to live and thrive. The extra energy causes chemical reactions, which give off heat again as a by-product--this heat is released through the same process of thermal radiation. When a planet forms, the material falling in to form it has to release its gravitational potential energy, and much of that energy is released as heat. Science. UVB: the second highest energy, is also mostly stopped in the atmosphere. Changes in the Sun's brightness can change global temperatures. These long extinct plants and animals once existed, aided by energy derived from the Sun. It is a nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy mainly as light and infrared radiation. Each link in this chain is food for the next link. The sun generates energy from a process called nuclear fusion. They were wrong. Animals, also, need plants to make the oxygen they need to breathe. dt = (12/) dA hr. The amount of solar energy received by the Earth has followed the Sun’s natural 11-year cycle of small ups and downs with no net increase since the 1950s. These spots correspond to concentrations in the magnetic flux field that inhibit convection and cause regions on the surface to drop in temperature to compared to the surrounding material. The energy finally touches the surface of the earth in the form of sunlight, a combination of radiant light and heat. The core is the only part of the sun that produces an appreciable amount of heat through fusion. The Sun's Energy. since the sun travels through radians (180°) in 12 hours. The process of producing energy starts from the core of the Sun. It will drastically change established life cycles and food chains and will start a new evolution process. The energy is emitted in various forms of light: ultraviolet light, X-rays, visible light, infrared, microwaves and radio waves. Well, in a single second, the sun fuses about 620 million metric tons of hydrogen in its core. Explain. Fusion reactions power the sun. Protons during collision produce a large amount of energy.....so the fuels here are protons. The energy continues to taper off and weaken as it makes its way to the Earth’s atmosphere. Now we know that the Sun is this huge mass of energy and it’s constantly emitting that energy out into space. Only about 7% of solar radiation is in the UV wavelengths. Storing heat is cheaper than storing electricity. The Sun and the Solar System orbit around the center of our Galaxy, the Milky Way. We have written many articles about the Sun and Solar Energy for Universe Today. Most of the solar radiation is absorbed by the atmosphere and much of what reaches the earth's surface is radiated back into the atmosphere to … A - The gases inside the Sun are on fire; they are burning like a giant bonfire. Let's think about this. The sun is a large ball of hydrogen and helium undergoing constant nuclear fusion, in which atoms of hydrogen combine to … Fusion in the core actually gives off high energy gamma rays. Gasoline is an indirect product of the Sun’s energy. Electric currents in the Sun generate a magnetic field that is carried out through the solar system by the solar wind—a stream of electrically charged gas blowing outward from the Sun in all directions. UVB: the second highest energy, is also mostly stopped in the atmosphere. In the end, it all comes down to the Sun’s layers, and the role each of them plays in making sure that solar energy gets to where it can help create and sustain life. In general the contribution of other stars is insignificant. Without heat and energy from the sun, life on Earth would not exist. Let the sun be at altitude A (angle above the eastern horizon) at a given time t during the day. Without the intense energy and heat provided by it, life could not exist. This energy strikes Earth, where it warms the planet, drives our weather and provides energy for life. It has more than enough energy to satisfy all our world energy needs, now and into the very distant future. Question 7 1/1 pts How does the Sun produce the energy that heats our planet? Warm air rises higher into the atmosphere and cooler, more dense, air moves in to replace it causing the wind. Technically known as nuclear fusion, this process releases an incredible amount of energy in the form of light and heat. Although, to be fair, this project of China’s Experimental Advanced Superconducting Tokamak is attempting to do something that comes somewhat close. Sunlight is important for the existence of all living organisms on the planet. Basically, this involves ions of hydrogen and helium emitting photons that travel a short distance before being reabsorbed by other ions. Radiant solar energy affects the movement of atmospheric fluids like air and water. The photosphere is tens to hundreds of kilometers thick, and is also the region of the Sun where it becomes opaque to visible light. It can produce energy any time [even at night]. This work is licensed under a Creative Commons Attribution 4.0 International License. Granted, scientists believe that there may be microbial or even aquatic life forms living beneath the icy surfaces of Europa and Enceladus, or in the methane lakes on Titan. It is by far the most important source of energy for life on Earth. How does the sun heat our planet? Played 194 times. The Sun is the closest star to Earth and is the center of our solar system. The three types are: UVC: the highest energy ultraviolet, does not reach the planet’s surface at all. The Sun. 0. A lot of Earth’s heat is leftover from when our planet formed, four-and-a-half billion years ago. combine two or more nuclei to make one nucleus with greater number of protons and neutrons. All the starlight put together would just keep the Earth a few degrees above absolute zero if the Sun weren't there (assuming our planet had lost all its internal heat as well). But for the time being, Earth remains the only place that we know of that has all the right conditions for life to exist. This is possible thanks to the extreme pressure and temperature that exists within the core, which are estimated to be the equivalent of 250 billion atmospheres (25.33 trillion KPa) and 15.7 million kelvin, respectively. can some organisms survive without energy from the sun. Animals need plants as a food source either directly or to feed the other animals that they eat. The gases inside the Sun yes, chemosythesis which is the process in which autotrophs use chemical energy to produce carbohydrates. The rest of the Sun is heated by the energy that is transferred from the core through the successive layers, eventually reaching the solar photosphere and escaping into space as sunlight or the kinetic energy of particles.
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