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Part B
Plan a controlled experiment to investigate how much the temperatures of cold sand and cold water
change when hot water is added to them. Assume you have access to water, sand, containers, ice, a heat
source, a scale, and thermometers. Summarize your experiment in a few sentences.
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Verified Answer :

GinnyAnswer

Certainly! Here is a step-by-step plan for conducting a controlled experiment to investigate how much the temperatures of cold sand and cold water change when hot water is added:

1. Gather Materials:
- Two identical containers
- Sand
- Water
- Ice
- A heat source (e.g., stove or kettle)
- A scale
- Two thermometers

2. Prepare the Cold Sand and Cold Water:
- Fill one container with a measured amount of sand.
- Fill the other container with the same volume of water as the sand.
- Use ice to cool both the sand and the water to the same target cold temperature. Measure and record the initial temperature of both using the thermometers.

3. Heat the Water:
- Using the heat source, heat a measured amount of water to a specific high temperature. Measure and record this temperature with a thermometer.

4. Add Hot Water:
- Quickly and simultaneously add the hot water to both the container with sand and the container with water. Ensure the amount of hot water added to each container is equal.

5. Measure Temperature Changes:
- Immediately after adding the hot water, measure the temperature of the sand and water in their respective containers.
- Record the temperature at regular intervals (e.g., every minute) to monitor how the temperature changes over time.

6. Analyze Results:
- Compare the recorded temperature changes of the sand and water after the addition of hot water.
- Determine how each material reacts to the addition of hot water by observing which one shows a greater change in temperature and how quickly each material's temperature stabilizes.

By following these steps, you can effectively investigate and compare the thermal response of sand and water when hot water is introduced.

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