Energy
Energy Detectives

People all around the world rely on energy. In many countries, including Venzuela and the United States, crude oil is the main source of energy. Oil is relatively inexpensive, and at 140,000 BTUs per gallon, it yields a high amount of useful energy. However, the benefits of oil must be weighed against the drawbacks.

Venezuela produces 3.4 million barrels of crude oil each day, almost 5% of the world's oil. Venezuela's economy depends on oil exports. But a large portion of this oil comes from the Orinoco River Valley. There are dangers associated with the extraction and transportation of oil in this midst of this rich environment. It is possible for the oil to spill and contaminate the environment. The process of refining oil can threaten the health of people in the area. Also, burning oil releases carbon dioxide into the atmosphere, which appears to be one of the main causes of global warming.

In this activity students will explore a variety of energy sources, including alternatives to oil.

chart paper
poster board
information resources on energy sources

Energy Sources

1. Brainstorm a list of energy sources and list them. Examples: oil, coal, nuclear, hydropower, solar, wind, wood, trash, hydrogen.

2. Divide the class into groups of four and assign one energy source to each group. Assign a role to each group member:

Researcher: List the pros and cons of the energy source, especially energy output, sustainability and environmental impact
Data Specialist: Gather numerical statistics to support the presentation.
Graphic Designer: Create tables, charts or diagrams to display the group's findings.
Spokesperson: Organize and present the group's findings.

3. Provide time for groups to study their assigned energy source. Groups can use resources such as the Internet or the school library to prepare a poster presentation or electronic presentation on their energy source.

4. As each group presents their findings, have the other students rate each energy source based on the criteria in the following chart. Ask them to write the name of the energy source at the top and write a check mark in the appropriate boxes. (Note: They are rating the energy source and not the quality of the presentation.)

Energy Source: _______________ Yes No Unsure
High Energy Yield 1 1 1
High Sustainability  1 1 1
Low Environmental Impact 1 11 1

 5. Make a chart listing energy sources down the left and each criterion the top. For each box, ask the students to raise their hand if they checked "Yes". Write the number of students that checked "Yes" in each box. Then add the three class ratings for each energy source to give it a total score.

Which energy source rated highest on your chart? Were there energy sources that rated high in one category and low in another?

Based on this information, what energy sources would you want your power company to use?

Ask students to list all their activities that use energy for an entire day. Challenge them to discover ways to reduce the amount of energy they use.


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