What is the primary source of heat driving convection currents in the hydrosphere? Friction between plates The Sun The Earth's core Radioactive Decay Clear my selection

## Step 1<br />Convection currents in the hydrosphere are primarily driven by heat. This heat is mainly derived from the Sun. The Sun's heat causes the water in the oceans and other bodies of water to heat up, leading to the formation of convection currents.<br /><br />## Step 2<br />The other options, such as friction between plates, the Earth's core, and radioactive decay, do contribute to heat in the Earth's system. However, they are not the primary sources of heat driving convection currents in the hydrosphere.