Which process takes the most energy? a.) Heating 10 kg of ice to the melting point. b.) Heating 10 kg of water to the boiling point. c.) Melting 10 kg of ice at a constant temperature. d.) Turning 10 kg of water to steam at a constant temperature. e.) None of the above.

d.) Turning 10 kg of water to steam at a constant temperature.

Explanation:

Heat energy is the energy absorbed or released by a body or an object due to temperature difference. It flows from a body or system of higher temperature to that of lower temperature.

When heat energy is applied to change the state or phase of an object, a lot of energy is required in the process. The major two types of heat flow involved for the process are: specific heat and latent heat.

Therefore in the given question, the process that requires most energy is turning 10 kg of water to steam at a constant temperature.

Since air is a poor conductor, most energy transfer by conduction occurs right near Earth's surface. Conduction directly affects air temperature only a few centimeters into the atmosphere. During the day, sunlight heats the ground, which in turn heats the air directly above it via conduction.

Explanation:

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