Question

Convection currents in air and water occur because _____. warm fluids are less dense than cold fluids cold fluids are less dense than warm fluids the molecules of warm fluids bump into the molecules of cold fluids electromagnetic waves move the air or water

Answer 1

Warm fluids are less dense than cold fluids.

Answer 2

Answer: Option (a) is the correct answer.

Explanation:

A process in which a fluid (liquid or gas) whose cooler material (more dense) sinks at the bottom and warm material (less dense) rises at the top is known as convection process.

This intermixing of materials leads to the development of convectional currents.

Therefore, we can conclude that convection currents in air and water occur because warm fluids are less dense than cold fluids.