What are 5 facts about convection currents?
What are 5 facts about convection currents? Vertical circulation within a fluid that results from density differences caused by temperature variations. In meteorology, the process in which air, having been warmed close to the ground, rises. Within the Earth, the radiogenic heat release results in convective motions causing tectonic plate ...
What are convection currents and how do they happen?
Convection currents are flowing fluid that is moving because there is a temperature or density difference within the material. Because particles within a solid are fixed in place, convection currents are seen only in gases and liquids. A temperature difference leads to an energy transfer from an area of higher energy to one of lower energy.
What are convection currents responsible for?
What are convection currents responsible for? Convection currents are responsible for the movement of tectonic plates on the crust of the Earth. The mantle has convection currents that cause the plates to move which cause the plates of the crust to move. How do convection currents occur? Convection currents occur when a reservoir of fluid is heated at the bottom, and allowed to cool at the top..
What are three situations in which convection occurs?
in liquids and in gases. Explain convection. convection occurs when the more energetic particles move from the hotter region to the cooler region and take their heat energy with them. Give 3 examples where convection occurs. in immersion heaters in kettles, hot water tanks and in convector heaters.
How does convection current form?
Convection currents form because a heated fluid expands, becoming less dense. The less-dense heated fluid rises away from the heat source. As it rises, it pulls cooler fluid down to replace it. This fluid in turn is heated, rises and pulls down more cool fluid.
What is the function of convection currents?
The heat transfer function of convection currents drives the earth’s ocean currents, atmospheric weather and geology. Convection is different from conduction, which is a transfer of heat between substances in direct contact with each other.
How does convection transfer heat?
Convection currents transfer heat from one place to another by mass motion of a fluid such as water, air or molten rock. The heat transfer function of convection currents drives the earth’s ocean currents, atmospheric weather and geology. Convection is different from conduction, which is a transfer of heat between substances in direct contact with each other.
What is the process that drives the Gulf Stream and other currents that turn over and mix up the waters in the?
Ocean Convection. Convection drives the Gulf Stream and other currents that turn over and mix up the waters in the world’s oceans. Cold polar water is drawn down from higher latitudes and sinks to the ocean bottom, pulled down toward the equator as lighter, warmer water rises to the ocean’s surface. The warmer water is pulled northward ...
How does convection work?
Convection drives the circulation of air in the earth’s atmosphere. The sun heats the air near the earth’s equator, which becomes less dense and rises upward. As it rises, it cools and becomes less dense than the air around it, spreading out and descending toward the equator again.
How does convection affect the atmosphere?
Convection drives the circulation of air in the earth’s atmosphere . The sun heats the air near the earth’s equator, which becomes less dense and rises upward. As it rises, it cools and becomes less dense than the air around it, spreading out and descending toward the equator again. These constantly moving cells of warm and cold air, known as Hadley Cells, drive the continual circulation of air at the earth’s surface that we call wind. Atmospheric convection currents are also what keep clouds aloft.
Why do volcanoes sink back down?
As the rock loses heat into the earth’s crust, it becomes relatively cooler and more dense, sinking back down to the core. These constantly circulating cells of hotter and cooler molten rock are thought to help heat the surface. Some geologists believe convection currents within the earth are a contributing cause of volcanoes, ...
