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
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1. In the model, the following water cycle processes are represented:
- Evaporation: This is represented by the heat source (sun) causing the water to evaporate.
- Condensation: This is represented by the water vapor condensing on the sides of the container.
2. The water cycle processes that are not represented in the model are precipitation and transpiration. To include precipitation, the model could be altered by adding a step where the condensed water vapor falls back as rain or snow. To include transpiration, the model could be altered by adding a component representing plants that release water vapor through their leaves.
3. If the water was at a decreased temperature, the weather would be affected by a decrease in evaporation. This could lead to less moisture in the air, potentially resulting in drier conditions and lower humidity. If the water temperature were increased, the weather would be affected by an increase in evaporation. This could lead to more moisture in the air, potentially resulting in higher humidity and a greater chance of precipitation.
Experiment 1: Water Movement
1. Hypothesis: Sunlight will increase the rate of evaporation.
2. Based on the results of the experiment, the hypothesis can be accepted or rejected. If the rate of evaporation was higher when exposed to sunlight compared to a control group kept in the dark, then the hypothesis can be accepted. If there was no difference in the rate of evaporation between the two groups, then the hypothesis can be rejected.
3. The parts of the water cycle represented in this experiment are evaporation and condensation.
4. Increasing the proportion of land (sand) to water would likely decrease the amount of water vapor released. This is because less water would be present for evaporation to occur, resulting in lower evaporation rates.
5. Drought conditions would impact infiltration and evaporation from the ground. Infiltration, which is the process of water soaking into the ground, would be reduced due to dry soil conditions. Evaporation from the ground would also decrease because there would be less moisture available for evaporation.
1. In this model, the water cycle processes of evaporation, condensation, and precipitation are represented. Evaporation is represented by the water evaporating from the surface and rising into the atmosphere. Condensation is represented by the formation of clouds in the atmosphere. Precipitation is represented by the water droplets falling from the clouds back to the surface as rain, snow, or other forms of precipitation.
2. One water cycle process that is not represented in this model is transpiration, which is the process of water being released by plants through their leaves. To include transpiration in the model, you could add representations of plants and simulate the release of water vapor from their leaves. Another process not represented is runoff, which is the flow of water over the surface of the land. To include runoff, you could add slopes or inclines in the model to simulate the movement of water across the surface.
3. If the water was at a decreased temperature, it would lead to less evaporation and slower rates of condensation. This could result in reduced cloud formation and potentially fewer precipitation events, leading to drier weather conditions. Conversely, if the water temperature were increased, it would increase evaporation rates and potentially lead to more condensation and cloud formation. This could result in more frequent precipitation events and potentially wetter weather conditions.
Experiment 1: Water Movement
1. Hypothesis: Increased sunlight exposure will lead to faster evaporation rates.
2. Based on the results of the experiment, you would accept or reject the hypothesis by comparing the evaporation rates in the presence and absence of sunlight. If the evaporation rate was significantly higher in the presence of sunlight, it would support the hypothesis and you would accept it. Conversely, if there was no significant difference in evaporation rates between the two conditions, you would reject the hypothesis.
3. The water cycle processes represented in this experiment are evaporation and condensation. Evaporation is represented by the water in the container evaporating when exposed to sunlight. Condensation is represented by the water vapor condensing on the lid of the container.
4. Increasing the proportion of land (sand) to water would likely decrease the amount of water vapor released. This is because sand has lower water-holding capacity compared to water or soil, so less water would be available to evaporate into the air.
5. Drought conditions would likely impact infiltration and evaporation from the ground. Infiltration, which is the process of water soaking into the ground, would be reduced during drought conditions as the soil becomes dry and compacted. Evaporation from the ground would also be reduced as there is less water available in the soil to evaporate. Both of these factors would contribute to a decrease in water availability and potentially exacerbate drought conditions.