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Convection is the tendency of heated air or water to rise, because the molecules have more energy and take up more space -- the less dense air or water is displaced by cooler, denser fluid. Convection typically forms a cycle where fluid is heated then cooled. On the Sun, huge convection cells carry heated plasma from the interior to the outer surface or photosphere.
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Convection cooking means bringing airflow into the oven. This form of cooking is faster and more efficient than a regular oven. Convection ovens have special fans and one more element installed. Another great thing about convection ovens is that they have three elements instead of two like a regular oven, so everything cooks much more evenly.
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Why is earth called and active planet and what does it mean?
In the case of Earth, "active" means that the planet has geological processes happening that are moving and reforming the planetary crust. These processes are driven by heat from the planets core which cause the planets substance to convect slowly.
How can I use the convect bake feature on my oven to achieve the best results for my recipe?
To use the convect bake feature on your oven effectively, preheat the oven, adjust the temperature as needed, and place the food on the center rack for even cooking. Monitor the food closely to prevent overcooking and rotate the pans if necessary for uniform browning.
What is the Convect?
Inside this zone is where hot gas bubbles rise faster than they can cool meaning that this zone would look exactly like a LavaLamp!!!
Why is there no heat transfer by convection or conduction through a vacuum?
Conduction needs a conducting medium. Convection needs something to convect. Neither exists in a vacuum.
Convection currents in the earths crust causes volcanos?
No. Earth's crust does not convect. Convection in the mantle, however can create hot spots and rifting, which can lead tot he formation of volcanoes.
What is the purpose of the heat sink-fan?
They create a large surface area so that they can convect heat away from further away from the transistors meaning they are more effective at keeping it cool
What is the purpose of the fins on the heat sinks?
They create a large surface area so that they can convect heat away from further away from the transistors meaning they are more effective at keeping it cool
What does the term plastic mean when describing the upper mantle?
When describing the upper mantle, the term "plastic" refers to the ability of the mantle material to deform and flow over long periods of time under high temperatures and pressures. This plastic behavior allows the mantle to flow and convect, driving plate tectonics and other geological processes.
How can I use the convect bake feature on my oven to achieve the best results when preparing a dish?
To achieve the best results when preparing a dish using the convect bake feature on your oven, make sure to adjust the cooking time and temperature as recommended in the recipe. The convection setting circulates hot air evenly around the food, resulting in faster and more even cooking. It's important to monitor the dish closely to prevent overcooking, and consider reducing the temperature by 25 degrees Fahrenheit compared to conventional baking.
Why is wadding or filling a good insulater?
Wadding, or filling, will trap pockets of air. As the air is trapped, it cannot convect heat so easily, and it is also more difficult for heat to be conducted. So, trapped air is a good insulator.
Why is the mantle in described as a 'very thick syrupy liquid?
Because at the Earth's surface plate tectonics indicates the mantle is convecting very slowly. To convect the mantle must have a liquid (fluid) nature over long time periods.
Why is the energy not transferred by conduction or convention?
Energy may not be transferred by conduction or convection if there is a lack of a medium to conduct or convect the energy, such as in a vacuum. In such cases, energy can be transferred through radiation, which does not require a medium and can travel through empty space.
