Question: What Do You Mean By Convection Currents?

Where do convection currents occur?

mantleAnswer 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 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.

Why do convection currents cause plates to move?

Plates at our planet’s surface move because of the intense heat in the Earth’s core that causes molten rock in the mantle layer to move. It moves in a pattern called a convection cell that forms when warm material rises, cools, and eventually sink down. As the cooled material sinks down, it is warmed and rises again.

What are convection currents kids definition?

Convection is a way in which heat travels. It occurs when heat is transferred by the movement of liquids or gases. … This cycle is called the convection current. Forced convection is when fluids or gases are moved by outside forces, not by a change in temperature.

What is convection in simple words?

Convection is the circular motion that happens when warmer air or liquid — which has faster moving molecules, making it less dense — rises, while the cooler air or liquid drops down. Convection is a major factor in weather. That current can result in wind, clouds, or other weather. …

How do convection currents move?

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. Where convection currents diverge near the Earth’s crust, plates move apart.

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…

What are convection currents?

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. … Convection is a heat transfer process.

What layer of earth does convection occur?

Mantle convection is the very slow creeping motion of Earth’s solid silicate mantle caused by convection currents carrying heat from the interior to the planet’s surface. The Earth’s surface lithosphere rides atop the asthenosphere and the two form the components of the upper mantle.

What is convection give an example?

Everyday Examples of Convection Boiling water – The heat passes from the burner into the pot, heating the water at the bottom. Then, this hot water rises and cooler water moves down to replace it, causing a circular motion. Radiator – Puts warm air out at the top and draws in cooler air at the bottom.

What are convection currents and what causes them?

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.

How do convection currents affect weather?

During convection, cooler water or air sinks, and warmer water or air rises. This movement causes currents. … These currents move water all around the earth, bringing warm water to cooler areas and vice versa. This redistributes thermal energy and causes changes in the weather.

Why does convection happen?

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. Heat energy is transferred from hot places to cooler places by convection. Liquids and gases expand when they are heated. … The denser cold liquid or gas falls into the warm areas.

How do you create a convection current?

Make Convection Currents!Fill the plastic container 2/3 full of room temperature water.Let the water sit for 30 seconds or until it is completely still.Place a blue ice cube at one end of the plastic container.Add two drops of red food coloring to the water at the opposite end of the plastic container.More items…