Name ___________________________________ Date ____________Hour _____
Lab: Heating of Land and Water
To receive full points you MUST write using complete sentences and complete thoughts
in paragraph form. The “ready” stamp on this pages will allow you into lab and is worth
5 points.
Purpose: To describe the causes of different temperature ranges for Eureka, California
and Lafayette, Indiana.
Research:
Write in below: AGAIN, use complete sentences. Write NEATLY.
Define radiation and give examples of radiation. ( See your notes for assistance)
What are the four Laws governing radiation? (see notes)
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Research the cities of Eureka, California and Lafayette, Indiana and fill in the data
chart attached. (back side)
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Ready
Stamp
Data Table: Comparison of Eureka Ca. and Lafayette Indiana
Factors
Eureka, California
Lafayette, Indiana
Longitude
Latitude
Temperature Range in
Summer
Temperature Range in
Winter
Average Highs
Average Lows
 Describe the temperature ranges for Eureka and Lafayette in summer and winter.
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Describe how heating (temperature) of land and water are related to location (geographic
position) and radiation (latitude).
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Sources: CITE your SOURCES in proper MLA format (minimum of 2 sources)
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Name___________________________________________________Period ______
Lab – Heating Land & Water
Problem: How do the heating of land and water compare ?
Hypothesis: (write an answer to the problem)
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Prediction: If … ( describes what is being measure), then … (describes what the results will be)
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Materials:
3 250 mL beakers
3 thermometers
3 wooden craft sticks
3 aluminum thermometers
ruler
heat lamp
cloth rag
3 colored pencils
250mL water
ring stand
US Map
400 mL sand
Safety Symbols
Procedures:
1.
2.
3.
4.
5.
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Pour 200 mL of dry sand into two of the beakers.
Pour 25 mL of water into one of beakers with sand.
Pour 200 mL of water into the third beaker.
Using the wooden stick for the beaker of water, suspend a thermometer as shown in fig. 1. The
other 2 thermometer bulbs should be just below the surface of the sand and water.
Record the starting temperatures of sand, water and damp sand for all three beakers in the data
table.
6.
Hang a light source from a ring stand so that it is about 12.5 cm above
all beakers.
7. CAUTION: THE LIGHT SOURCE AND THE BEAKERS WILL GET
VERY HOT!!! DO NOT TOUCH WITH BARE HANDS!!!
8. Turn on the light and record the temperatures for each beaker in the data table.
9. Repeat Step every minute for 10 minutes.
10. Turn off the light and leave set-up for the next class.
Data:
Heating Land and Water
Starting
Temperature °C
1
min.
ºC
2
min.
ºC
3
min.
ºC
4
min.
ºC
5
min.
ºC
6
min.
ºC
7
min.
ºC
8
min.
ºC
9
min.
ºC
10
min.
ºC
Water
Dry
Sand
Damp
Sand
Graph:
Graph the results from the data table. Use a different colored pencil for each beaker and
plot the temperature changes on the graph provided. Connect the dots with a line. Add a
key.
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Key
Analysis:
Type or write in ink on a separate paper the answers to the Analysis questions AND
the Conclusion statement. The questions should be in a numbered list, as shown,
with COMPLETE sentences answers.
1. Which beaker had the greatest temperature change when exposed to equal amount
of radiation? Which beaker had the least temperature change when exposed to
equal amount of radiation?
2. How does the changing temperature differ for dry sand and damp sand when
exposed to equal amount of radiation
3. Which beaker would be most like the temperature and controls that affect Phoenix,
Arizona?
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4. Which beaker would be most like the temperature and controls that affect San
Francisco, California?
5. Which absorbs more heat; land or water? SUPPORT your answer with
quantitative data gathered during the lab!
6. Explain which factors affect the temperature ranges for Eureka, California? (Hint:
think of the 6 temperature controls)
7. Explain which factors affect the temperature ranges for Lafayette, Indiana? (Hint:
think of the 6 temperature controls)
8. Locate Eureka, California, and Lafayette, Indiana, on a U.S. map. Describe
which city would show the greater annual temperature range and explain WHY?
9. Describe possible errors that occurred within this lab.
Conclusion:
1. Write a statement that explains the difference in of heating of land and water.
2. Describe the affect heating land and water has on our weather.
3. What other factors besides being near geographic position might affect
temperature range for a city? (Hint: there are 6 temperature controls)
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