B. Warm air rises and takes heat with it; eventually it cools and sinks.
Explanation:
Warm air rising and taking heat with it which eventually cools and sinks describes a typical convection current. This is not radiation
Convection and radiation are both forms of heat transfer alongside conduction.
Radiation is the only form of heat transfer that does not involve the use of a medium or particles.
Air is a medium and it flouts the concept of heat transfer by radiation.
Convection is mostly taking place in fluids especially liquid and gas.
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1 Newton is equal to the amount of force required to accelerate an object at a rate of 1 metre per second, every second. One newton is the force needed to accelerate one kilogram of mass at the rate of one metre per second squared in direction of the applied force.
Through the compact molecules of a solid sound would move at its slowest.
Through the loose molecules of a liquid sound would move moderately.
Through the very spacious molecules of a gas sound would move very fast.
