3. Materials Small box Paper cups Light-colored soil Tap water Two thermometers Ruler Tape Paper Pencil Timer Desk lamp Adult helper
4. Steps of investigation First, we cut the top and one side of the box off. Second, we filled one cup with sand and the other with water. Third, we put the cups in the back of the box. Fourth, we put thermometers in both cups and taped the back of the thermometers to the back of the box. We waited five minutes and recorded the temperatures. Then, we turned the lamp on to see which one heated faster. After 30 minutes we turned the lamp off and waited another 30 minutes to see which one cooled faster.
5. Step One in Detail First, we made sure we had all of the materials we needed. Next, we cut off the top of the box and we cut the side of the box off. Then, we placed the materials in the right places.
6. Step Two in Detail Next, we filled one of the cups with sand and the other with water. Second, we put them back in the original position in the back of the box.
7. Step Three in Detail Next, we put a thermometer in each cup. We had to make sure that the bulb was one fourth inch into the sand and water. Then, we taped the top of each thermometer to the back of the box. We waited five minutes and recorded the temperatures of the sand and water. This was the starting temperature.
8. Step Four in Detail Next, we turned on the lamp for 10 minutes and immediately recorded the temperatures in each cup. The temperatures did not change much so we waited for 20 more minutes and recorded the temperatures. Then, we turned the lamp off for 10 minutes to see which cooled faster. Again, the temperatures didn’t change much so we waited longer and then recorded the temperatures.
9. Results and Conclusions Heating Up We found out that sand heats and cools faster than water does. This is because substances react to changing temperatures in different ways. Cooling Down
10. Related Topics On a warm sunny day the sand heats faster than the water does. The sand heats the air above it and the cool air over the ocean is more dense than the warm air. Then the cool air goes inland to replace the rising warm air. This can create a strong breeze. The bigger the difference In the land and water temperatures, the better chance of a breeze and the stronger the breeze will be.
11. Related Topics The opposite happens at night. The sand is cooler than the water. Warm air from the water rises and the cool air from the sand goes over to the water to replace the rising air. Then the warm air over the water heats the cool air from the sand. Next, the warm air from the water goes to the sand to replace the air from the sand and cools down. This becomes a cycle.
12. What We Have Learned About God After researching and learning about heat and sea breezes we have to praise God for this wonderful world. It is so amazing to learn about what He created. We are thankful for having such a great place to live in. Thank you God!
