Where does the source of heat for Earth’s convection currents come from
http://www.google.com/#q=+source+of+heat+for+Earth%E2%80%99s+convection+currents&*
The source of heat for Earth's convection currents primarily comes from two main sources: the Sun and the Earth's interior.
1. The Sun: The Sun is the primary source of heat for the Earth. It emits solar radiation, including sunlight and heat, which reaches the Earth's surface. This solar energy warms the Earth's surface unevenly, as different regions receive varying amounts of incoming sunlight depending on factors like latitude, season, and time of day.
2. The Earth's Interior: The Earth's interior also contributes to the heat for convection currents. Deep below the Earth's surface lies a layer called the mantle. Within the mantle, there is a slow but continuous process of heat transfer known as mantle convection. This convection occurs due to the heat generated by the Earth's core. The core contains extremely hot molten materials, primarily composed of iron and nickel, which release heat as a result of radioactive decay and residual heat from the planet's formation.
The combination of solar radiation and heat from the Earth's interior leads to the temperature differentials necessary for the formation of convection currents in various layers of the Earth's atmosphere and interior, influencing weather patterns, ocean currents, and tectonic plate movements.