Question

how could you increase the total energy of a system consisting of a jar full of water?
a. place the jar in a freezer.
b. place the jar in sunlight.
c. leave the lid off and allow the water to evaporate.
d. leave the jar in a dark closet.

Explanation:

Step1: Analyze option A

Placing in freezer reduces energy as it cools water.

Step2: Analyze option B

Sunlight transfers heat energy to water, increasing its total energy.

Step3: Analyze option C

Evaporation takes energy away from remaining water, decreasing its energy.

Step4: Analyze option D

Leaving in dark closet doesn't add energy, no energy - transfer source.

Answer:

B. Place the jar in sunlight.