Question

When volcanoes erupt, they emit large plumes of hot ash, which can spread and cover miles of sky.

Which process lifts the hot, black clouds into the sky?
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1 point
radiation that causes thermal energy to transfer into the clouds and hold them together
conduction that causes thermal energy to pass from the smoke into the ground
conduction that causes wamer air to spread and cooler air to condense into clouds
convection that causes warmer air to rise and cooler air to sink into its place

Answer 1

convection that causes warmer air to rise and cooler air to sink into its place

Explanation: the hot gases and ash are heated, become less dense, and rise buoyantly; cooler surrounding air moves in to replace them, creating upward convective currents that lift the plume.