Which of the following is not needed to make a model of the water cycle?
A. An energy source
B. Water
C. A closed container
D. A drain
D is correct
I agree.
To determine which of the options is not needed to make a model of the water cycle, let's take a look at each option one by one.
A. An energy source: In a model of the water cycle, an energy source is required to simulate the sun's heat, which drives evaporation. Therefore, an energy source is needed to make a model of the water cycle.
B. Water: Water is a fundamental component of the water cycle, as it moves through various stages such as evaporation, condensation, and precipitation. So, water is needed to make a model of the water cycle.
C. A closed container: A closed container helps to simulate the natural water cycle by creating a confined environment where water evaporates, condenses, and precipitates. Hence, a closed container is needed to make a model of the water cycle.
D. A drain: A drain is a mechanism used to remove water from a container. While drains are commonly used in practical scenarios to manage water levels, they are not necessary for a basic model of the water cycle. The focus of the model is on the stages of evaporation, condensation, and precipitation, rather than the removal of water.
Therefore, option D, a drain, is not needed to make a model of the water cycle.