Energy Unit Study Guide

Based on the diagram above, which term could replace the question mark?

• Humans

• Machines

• The Moon

• The Sun

Which of the following is a nonrenewable energy source?

• Solar collector

• Wind turbine

• Fossil fuel

• Hydroelectric generator

The calculator above works using its solar cell. Which of the following energy transformations takes place?

• Thermal to Electrical

• Thermal to Mechanical

• Radiant to Electrical

• Radiant to Mechanical

Nuclear power plants can produce electricity without using our limited resources of fossil fuels. What is an important problem with the use of nuclear energy?

• The nuclear power plants produce smog.

• Nuclear power plants are not very efficient.

• We have a limited supply of uranium.

• We must find a safe way to dispose of radioactive waste.

A local factory is thinking about switching from coal to natural gas to meet its energy needs. They know this change has advantages and disadvantages. Complete the table by adding one potential advantage and one potential disadvantage of this switch.

• Advantage: Natural gas is non renewable and can run out. Disadvantage: Natural gas causes more noise pollution than coal

• Advantage: Natural gas produces less air pollution than coal. Disadvantage: Natural gas is still a fossil fuel and emits greenhouse gases.

• Advantage: Natural gas is more expensive than coal. Disadvantage: Natural gas is completely safe to transport.

• Advantage: Natural gas is solid at room temperature. Disadvantage: Natural gas is not used for electricity generation.

Natural gas is renewable and will not run out.

• True

• False

Natural gas burns cleaner than coal.

• True

• False

A student compares energy generated from renewable sources with fossil fuels, as shown in the table. Which statement correctly analyzes the findings summarized in the table?

• People would have to invest more to harness the same amount of energy from renewable sources as from fossil fuels.

• The supply of energy from fossil fuels is able to meet the demands of present and future generations.

• Generating energy from fossil fuels would help people increase their energy usage with time because of high efficiency levels.

• People would need to reduce their energy consumption if energy is harnessed from the renewable sources to save the resources for future generations.

An energy source in which there is a limited quantity?

• Solar Energy

• Non-Renewable Energy

• Renewable Energy

• Hydroelectric Energy

Which of the following tables correctly identifies the energy sources as renewable or nonrenewable energy sources?

• Table 1: Renewable - coal, natural gas; Nonrenewable - ocean tides, wind.

• Table 2: Renewable - ocean tides, wind; Nonrenewable - coal, natural gas.

• Table 3: Renewable - coal, ocean tides; Nonrenewable - wind, natural gas.

• Table 4: Renewable - wind, natural gas; Nonrenewable - coal, ocean tides.