10/5/2023 0 Comments Radiant meaning for kidsIf you’ve ever been in a bath that has started to go cold, and then turn the hot tap on, you’ll feel the hot water convect from the tap further into the bath. Atoms will flow away from hot regions toward cooler regions, carrying their heat and energy with them. ConvectionĬonvection is the transfer of heat through the flow of fluids. For example, if you hold a metal spoon in a mug of hot tea, heat will be transferred from the tea to the spoon, and then from the spoon to your hand.īut we’re not touching the sun (and that’s a good thing too - its surface temperature is over 5,000☌!) and space is a vacuum so there isn’t anything to act as a spoon and conduct the heat. Heat can also be conducted in more than one step. Other materials, such as glass, are poor conductors, and are called insulators. Some materials, such as metals, are good conductors. If you touch something cold, heat goes from you to it. If you touch something warm, heat goes from it to you. ConductionĬonduction is what scientists call the transfer of heat through touching. Let’s think about each of these in turn, to discover which one allows heat to travel through space. There are three ways heat can be shared: conduction, convection and radiation. This means it can’t carry much heat in it and so it can’t explain how the warmth from the sun reaches Earth. This is part of what causes the beautiful light display we call the aurora.Ĭurious Kids: what causes the northern lights?īut the solar wind isn’t very dense - it has much, much fewer atoms in it than air, for example. In fact, the sun is constantly blowing matter, known as the solar wind, out into our solar system. Even if we ignore the big stuff like stars, planets and comets, space is not completely empty. It’s true that space is a vacuum, which means that there isn’t much matter floating around out there. If something is cold, its atoms have much less energy and they stay quite still. Send us feedback about these examples.If something is hot, it means that its atoms have lots of energy and are bouncing around. These examples are programmatically compiled from various online sources to illustrate current usage of the word 'radiation.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Mira Miller, Verywell Health, 18 July 2023 See More How much radiation is 100 Bq/m³? - Andy Larsen, The Salt Lake Tribune, 22 July 2023 The conversation about whether radiation emitted by cell phones can cause brain cancer has been ongoing for years, though research has yet to prove a solid connection between the two. Ali Francis, Bon Appétit, 25 July 2023 The median Utah home returned a level of 2.6 pCi/L in this period, or just under 100 Bq/m³. Byvivek Wadhwa, Fortune, 26 July 2023 Joey Malicki, a 25-year-old radiation therapist, and Angela Yu, a 24-year-old research lab technician, met on the Vegan Dating Lounge Discord in the fall last year. David Chiu, Peoplemag, 26 July 2023 The prevailing treatment landscape primarily relies on the imprecise tools of radiation and chemotherapy, burdened with debilitating side effects. Sam Boyer, cleveland, 28 July 2023 According to the Mayo Clinic, a broad-brimmed hat helps provide protection from ultraviolet (UV) radiation from sunlight. Jeff Miller, Los Angeles Times, 30 July 2023 Have at least 12 inches of your hair cut for donation to Wigs for Kids - usually youngsters undergoing chemotherapy or radiation. 2023 Advertisement Following the chemo and a short break, Staley began six weeks of radiation, every morning, Monday through Friday. Recent Examples on the Web Elena Tita-Global Images Ukraine/Getty Images Since early June, all six of the plant’s nuclear reactors have been placed into a cold shutdown, suspending the production of electricity and reducing the risk of an accident that could release large amounts of radiation.
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