Lab – The Crush: The Effects of Air Pressure
Work File
Trends in Air Pressure
Examining the Table
Task 1:
1. Based on the information in the data table, finish the following sentence (record your answers on the Work File):
"As altitude increases, the air pressure _________________."
Task 2:
1. What causes air pressure?
2. What instrument is used to measure air pressure?
3. Why does air pressure decrease as you go up in altitude?
4. When preparing for a climb, many climbers will measure the air pressure at the highest altitudes to which they will be climbing. Why do they do this?
Task 3
At this point, you will need to fill out this Lab Report. To do this, you will use the information from the lesson along with what you observed.
The Crush Lab:
LAB REPORT
TITLE: The Crush: The Effects of Air Pressure
OBJECTIVE: To demonstrate the effects of air pressure on an aluminum can.
MATERIALS:
empty aluminum soda can shallow pan (baking, or pie pan, or storage bowl will do) water metric ruler (to measure depth of water) stove top burner two oven mitts or hot pads
PROCEDURES:
Note: Read all the instructions for this lab before you begin working! Pre-reading the procedure, will give you a mental picture of what you will be doing and a better understanding the process.
1. Make sure there are no materials around the burner. Then turn on the stove top burner to the highest setting.
2. Off to the side, on the counter, pour water into the shallow pan to a depth of 2 centimeters. (Measure to be sure it is this deep.)
3. Fill the soda can so that there is about 1 centimeter of water at the bottom. (This does not have to be exact.)
4. Carefully place the can on the burner so that it stands up securely. *Have the pan with the water in it on the counter near the burner.
5. Allow the water in the can to heat up until the water inside is boiling