1. Land Vs. Water Lab
Lab Section

2. Lab Set Up Question Does water or sand heat up and cool down faster?
Hypothesis
If water and sand or heated at the same temperature for the same amount of time, then….because………

3. Copy Tables SAND Time (min.) Temp (°C) 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
0.5 1
1.5 2
2.5 3
3.5 4
4.5 5
Water
Time
(min.)
Temp (°C)
0.5 1
1.5 2
2.5 3
3.5 4
4.5 5

4. Materials Hot Plate 150 mL of sand in beaker 150 mL of water in beaker
2 Thermometers
Goggles
Stop Watch

5. Procedure Put on goggles and apron
Place one thermometer into the beaker of sand and one thermometer into the beaker of water.
3. Record the beginning temperature of the sand and water in each beaker in the data table on your handout.
4. Place the beaker of sand on one hotplate and the beaker of water on the other hotplate

6. Procedures
4. AT THE SAME TIME turn both hotplates on 4 AND start the timer.
5. Read and record the temperatures of the sand and water in the data table on your handout every 30 seconds for a total of 5 minutes.
6. After 5 minutes turn both hotplates off and carefully move the beakers from the hotplate to the counter by grasping the top rim of the beaker.
DO NOT TOUCH THE BOTTOM OF THE BEAKER – IT IS HOT!!

7. Procedures 7. Reset and restart the timer.
8. After 5 minutes of cooling record the temperature of the sand and water in each beaker at the bottom of your data table.
9. Calculate and record the temperature change between the final heated temperature and the cooled temperature of the sand and water.

8. Land and Sea Breezes

9. Conclusion Claim Evidence Reasoning Answer the question
The evidence is …….
Give data (temperatures)
Reasoning
The reason is
Explain how this causes Sea Breezes
Use the term “Uneven Heating”