1. Which water cycle processes are represented in this model and by what components?

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2. Which water cycle processes are not represented? How could the model be altered to include each of these processes?

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3. How would the “weather” be affected if the water was at a decreased temperature? How would the “weather” be affected if the water temperature were increased?

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Experiment 1: Water Movement

POST LAB QUESTIONS

1. Develop a hypothesis predicting the effect of sunlight on evaporation?

Hypothesis =

2. Based on the results of your experiment, would you reject or accept the hypothesis that you produced in question 1? Explain how you determined this.

Accept/reject =

3. What parts of the water cycle are represented in this experiment?

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4. How would increasing the proportion of land (sand) to water affect the amount of water vapor released?

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5. How would drought conditions impact infiltration and evaporation from the ground?

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References
Any sources utilized should be listed here.

1. The water cycle processes represented in this model include evaporation, condensation, precipitation, and runoff. Evaporation is represented by the water evaporating from the surface, condensation by the water vapor turning into clouds, precipitation by the water falling from the clouds, and runoff by the water flowing over the land.

2. The water cycle processes not represented in this model are transpiration and sublimation. To include transpiration, the model could include plants that release water vapor through their leaves. To include sublimation, the model could show ice or snow directly changing into water vapor.

3. If the water was at a decreased temperature, it would lead to less evaporation and slower water movement in the water cycle. This could result in cooler and potentially drier weather conditions. If the water temperature were increased, it would lead to increased evaporation and faster water movement in the water cycle. This could result in warmer and potentially wetter weather conditions.

Experiment 1: Water Movement

1. Hypothesis: Sunlight will increase the rate of evaporation.

2. Based on the results of the experiment, if the rate of evaporation was higher when sunlight was present compared to when there was no sunlight, then the hypothesis would be accepted. If there was no significant difference between the evaporation rates with and without sunlight, then the hypothesis would be rejected.

3. The parts of the water cycle represented in this experiment are evaporation and potentially condensation, depending on the setup of the experiment.

4. Increasing the proportion of land (sand) to water would likely result in a decrease in the amount of water vapor released. This is because more land would absorb the water and prevent it from evaporating as much.

5. Drought conditions would likely decrease the amount of water available for infiltration and evaporation from the ground. Infiltration would be reduced as the ground becomes dry and less capable of absorbing water. Evaporation would also be reduced as there is less water available to evaporate.

1. To determine which water cycle processes are represented in the model and by what components, we can analyze the different elements of the model. Look for components that represent evaporation, condensation, precipitation, and collection. Evaporation is represented by the water evaporating from a body of water, such as a lake or ocean. Condensation can be represented by water droplets forming on a surface, such as the inside of a cloud. Precipitation is typically represented by water droplets falling from a cloud or raining down. Collection can be represented by water gathering in a pool or reservoir.

2. To identify which water cycle processes are not represented in the model, we need to consider any components or processes that are missing. For example, if the model does not include transpiration (the process by which plants release water vapor), that would be a missing process. To alter the model to include missing processes, you could add a component such as a representation of plants or vegetation to represent transpiration. Other missing processes could include groundwater movement and runoff. To include these, you could modify the model by adding underground pathways or a representation of a river system.

3. If the water in the model is at a decreased temperature, the weather could be affected by cooler air temperatures. This could lead to a decrease in evaporation, as the water would take longer to reach the boiling point. The cooler temperature could also lead to less moisture in the air, potentially resulting in drier weather conditions. Conversely, if the water temperature were increased, the weather could be affected by warmer air temperatures. This could lead to increased evaporation rates, as the water would reach the boiling point more quickly. The warmer temperature could also result in more moisture in the air, potentially leading to more humid weather conditions.

Experiment 1: Water Movement

1. To develop a hypothesis predicting the effect of sunlight on evaporation, you could hypothesize that sunlight will increase the rate of evaporation. This hypothesis is based on the understanding that sunlight provides heat energy, which can increase the kinetic energy of water molecules and promote evaporation.

2. To determine whether to accept or reject the hypothesis, analyze the results of the experiment. If the experiment demonstrates that there was a significant increase in evaporation when sunlight was present compared to when it was absent, then you would accept the hypothesis. If there was no noticeable difference in evaporation between the two conditions, you would reject the hypothesis. It is important to compare and analyze the data collected during the experiment to make an informed decision.

3. The experiment represents the processes of evaporation and condensation. Evaporation can be observed as water molecules transition from the liquid state to the gaseous state. Condensation can be observed as water vapor converts back to liquid water on the cooler surface (e.g., the inside of the lid).

4. Increasing the proportion of land (sand) to water in the model can potentially affect the amount of water vapor released. Land generally heats up faster than water, so increasing the proportion of land can lead to increased heating. This increased heating can raise the temperature of the water, promoting a higher evaporation rate and consequently increasing the amount of water vapor released.

5. Drought conditions can impact infiltration and evaporation from the ground. In drought conditions, the soil tends to dry out, resulting in reduced water availability for infiltration. This can lead to decreased infiltration rates as the soil becomes harder and less permeable. Evaporation from the ground can also be affected by drought conditions, as dry soil can lead to increased evaporation rates due to the absence of moisture. Consequently, drought conditions can result in reduced water availability and drier environmental conditions.

References:
- Water Cycle. (n.d.). Retrieved from https://www.usgs.gov/special-topic/water-science-school/science/water-cycle

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