Example – Heating a pot of soup on a stove . An example of convection is heating a pot of soup on a stove. As soup at the bottom of the pot gets hot, it expands and becomes less dense. The warm, less dense soup moves upward, floating over cooler, denser soup.
Which is an example of convection currents marshmallow?
marshmallows toasting over a campfire B.a pot being heated by an electric burner C. feet getting hot when stepping across sand D.a radiator emitting warm air and drawing in cool air.
Which is an example of convection current?
Convection currents are present in the air– A good example of convection current is the warm air that rises towards the ceiling in your house . The process happens as the warm air is said to be less dense than that of the colder air. Another good example of convection current is wind.
What is in a convection current?
Convection currents are the result of differential heating . Lighter (less dense), warm material rises while heavier (more dense) cool material sinks. It is this movement that creates circulation patterns known as convection currents in the atmosphere, in water, and in the mantle of Earth.
What are convection currents quizlet?
Convection currents are the transfer of heat through the Earth’s magma . They can be found in the mantle. The hottest part of the Earth is the core. the heat from the core is transferred into the lower mantle. ... As the magma reaches the upper Mantle, it reduces in temperature and begins to become more rigid.
How are convection currents used in everyday life?
radiator – A radiator puts warm air out at the top and draws in cooler air at the bottom. steaming cup of hot tea – The steam you see when drinking a cup of hot tea indicates that heat is being transferred into the air. ice melting – Ice melts because heat moves to the ice from the air.
What is needed for convection?
Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy. ... The liquid or gas in hot areas is less dense than the liquid or gas in cold areas, so it rises into the cold areas. The denser cold liquid or gas falls into the warm areas.
What are 5 examples of convection current?
- Breeze. The formation of sea and land breeze form the classic examples of convection. ...
- Boiling Water. Convection comes into play while boiling water. ...
- Blood Circulation in Warm-Blooded Mammals. ...
- Air-Conditioner. ...
- Radiator. ...
- Refrigerator. ...
- Hot Air Popper. ...
- Hot Air Balloon.
Is toasting a marshmallow convection?
Burnt marshmallow is simply a marshmallow that has been extremely toasted! There are two main processes that heat a marshmallow: absorption of campfire radiation (photons) and contact with very hot air rising off the fire (convection). If we place the marshmallow directly above the fire, we get both.
Is convection boiling water?
Convection is the flow of heat by movement of matter from a hot region to a cold region. A convection current is a process that involves the movement of energy from one place to another. ... This movement of molecules creates convection currents. Boiling water is an example of forced convection .
What is a convection current simple definition?
1a : a stream of fluid propelled by thermal convection . b : thermally produced vertical air flow. 2 : a surface charge of electricity on a moving body — compare convection sense 3c.
Why is convection current important?
Convections currents in the earth’s mantle are thought to be the driving force of plate tectonics . Where the hot magma is brought near the surface by the convection currents a divergent boundary is created. The divergent boundaries form new oceans and widen existing oceans.
What is convection current explain with diagram?
A convection current is a process that involves the movement of energy from one place to another . It is also called convection heat transfer. ... The heat energy can be transferred by the process of convection by the difference occurring in temperature between the two parts of the fluid.
Where do Earth’s convection currents occur?
Convection currents in the Earth occur in the mantle . The core of the Earth is extremely hot, and material in the mantle close to the core is heated...
What is the result of convection?
Convection, process by which heat is transferred by movement of a heated fluid such as air or water. Natural convection results from the tendency of most fluids to expand when heated —i.e., to become less dense and to rise as a result of the increased buoyancy.
What is convection quizlet a cycle?
Convection is a cycle of moving material formed by the rise of less-dense material and the sinking of denser material . ... In general, warmer materials are less dense, and colder materials are more dense.
