Science Probe II Technology Activities

Chapter 6

Internet

In recent years, there have been many claims that people living under or near electrical transmission lines suffer from more illnesses than people who do not live near or under power lines. This has been blamed on the electromagnetic field (EMF), the electrical field, produced when electricity travels through wires. Much research has been done to determine whether this is true or not. Conduct an Internet search to find out what this research has found, and come to your own conclusions. Prepare a presentation about your conclusions and how the research supports it. Give this presentation to your classmates. Below is a web site to get you started:

National Electromagnetic Field Test Association Links page http://kato.theramp.net/nefta/links.htm

Application Software

Activity 6B – Use an Internet search to obtain information necessary to build a display, or prepare an oral report as directed in the activity.

Probeware

Activity 6C – Use current and voltage probes connected to a computer or calculator in place of an ammeter and a voltmeter while performing this activity. Connect the probes in the same manner as directed for the voltage and ammeter. The computer or calculator application software will display and record the voltages and amperage as you follow the procedure. Most application software packages will allow you to export the data to a spreadsheet program. If yours will permit this, export the data into a spreadsheet. Use the mathematical functions of the spreadsheet to do the calculations for power (in kW). Print the data table that was recorded by the application software, and secure it in your SCIENCE PROBE Logbook where you will answer the discussion questions.

Activity 6D – Use current and voltage probes connected to a computer or calculator in place of an ammeter and a voltmeter while performing this activity. Connect the probes in the same manner as directed for the voltage and ammeter. The computer or calculator application software will display and record the voltages and amperage as you follow the procedure. Most application software packages will allow you to export the data to a spreadsheet program. If yours will permit this, export the data into a spreadsheet. Use the mathematical functions of the spreadsheet to do the calculations for power (in kW) and efficiency. Print the data table that was recorded by the application software, and secure it in your SCIENCE PROBE Logbook where you will answer the discussion questions.