What Do Convection Currents Cause?

Is a fan an example of convection?

The hot air popper which is used to make popcorn also utilises the principle of convection.

The hot air popper has a fan, vent, and a heating element.

When the popper is turned on, the fan is employed to blow air on the heating element through the vent.

The heating element, in turn, warms the air; which then rises..

Why is the convection important?

This flow, called mantle convection, is an important method of heat transport within the Earth. Mantle convection is the driving mechanism for plate tectonics, which is the process ultimately responsible for producing earthquakes, mountain ranges, and volcanos on Earth.

How do convection currents cause earthquakes?

The crust moves because of movements deep inside the earth. Heat rising and falling inside the mantle creates convection currents generated by radioactive decay in the core. The convection currents move the plates. … Plate tectonics cause earthquakes and volcanoes .

What are the two main categories of ocean currents?

There are two type of Ocean Currents:Surface Currents–Surface Circulation.Deep Water Currents–Thermohaline Circulation.Primary Forces–start the water moving.The primary forces are:Secondary Forces–influence where the currents flow.Solar heating cause water to expand.More items…

What do you mean by convection currents?

A convection current is a process which involves the movement of energy from one place to another. Convection currents tend to move a fluid or gas particles from one place to another. These are created as a result of the differences occurring within the densities and temperature of a specific gas or a fluid.

Do convection currents cause volcanoes?

Volcanic eruptions are the result of convection currents, which are repetitive actions that occur underground. As pressure builds beneath the surface of the Earth, it pushes rock sediments upwards, releasing molten rock.

What happens to warmer material in a convection current?

When the molecules are heated, they move faster and move apart, causing them to be less dense and rise. When the warm air rises and the cool air sinks, convection currents are created.

Which are examples of convection currents?

Examples of Convection Currents and Energy ScaleYou can observe convection currents in water boiling in a pot. … A simple example of convection currents is warm air rising toward the ceiling or attic of a house. … Wind is an example of a convection current. … Combustion generates convection currents.More items…•

How do convection currents affect the Earth?

Convection currents describe the rising, spread, and sinking of gas, liquid, or molten material caused by the application of heat. … Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates that make up the earth’s crust.

What would happen if convection currents stopped?

Answer 1: If all convection currents on Earth stopped that would be a natural disaster. The amount of heat which the sun radiates at us sets the temperature of the Earth’s surface. … So if convection completely stopped the high and low temperatures would force people and animals to move away from the poles and equator.

What happens during convection current?

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.

Where do convection currents occur?

Answer and Explanation: Convection currents on Earth occur in the mantle of the Earth. It is causes by the rise of hot magma towards the Earth’s crust, becoming cooler, and…

What is the importance of convection current in the mantle?

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 do convection currents in the ocean cause?

Convection occurs because the oceanic waters heat up becoming less dense. This water moves above the cooler water, and give off its heat to the surrounding environment. As it cools, it begins to sink, and the process begins again. Convection results in the continual circulation of ocean water on a global scale.

What are 4 examples of convection?

Examples of ConvectionBoiling water – The heat passes from the burner into the pot, heating the water at the bottom. … Radiator – Puts warm air out at the top and draws in cooler air at the bottom.Steaming cup of hot tea – The steam is showing heat being transfered into the air.Ice melting – Heat moves to the ice from the air.More items…

What are two factors that cause convection?

Three factors contribute to set convection currents in motion:heating and cooling of the fluid,changes in the fluid’s density, and.force of gravity.The heat source for these currents is heat from Earth’s core and from the mantle itself.Hot columns of mantle material rise slowly.More items…