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- 1. Multiple Choice
A town is considering building a biodiesel power plant that would burn biomass to generate electricity. Which of the following correctly lists an advantage and a disadvantage of this project?
Advantage: it reduces dependence on fossil fuels. Disadvantage: it would emit pollution into the air.
Advantage: it would use energy from the sun and wind. Disadvantage: it is a non-renewable source of energy.
- 2. Multiple Choice
The resistance of several materials are shown, which material has the best conductivity?
Carbon
Aluminum
Carbon
- 3. Multiple Choice
Electromagnets are created by
You can create an electromagnet by wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current."
"You can create an electromagnet by applying a direct current to a non–magnetic material in order to create an electromagnetic field."
- 4. Multiple Choice
Sean and Tommy are debating the positive and negative impacts of technology on environmental quality. Sean is listing the positive impacts. Which of the following would help his argument?
More people buy smart phones and tablets
Technology can disrupt natural processes
Technology has helped make recycling to be more efficient
- 5. Multiple Choice
Which statement is true?
Geothermal power plants use the renewable resource of heat from within the Earth to generate electricity.
Hydroelectric energy uses the energy from the sun, which is a renewable resource.
Solar energy is a non–renewable resource that is used by many countries all over the world.
- 6. Multiple Choice
Human populations all over the world burn fossil fuels to power cars, planes, and generate electricity. Select the statement that best describes the long-term global effects of this behavior.
Burning fossil fuels pollutes the environment and our heavy reliance on them creates a long–term problem because they are not a renewable resource.
Fossil fuels burn clean so the pollution problem is not really a source of concern for the future
- 7. Multiple Choice
Which of the following best describes the use of a renewable resource?
Natural gas is extracted from deep in the Earth and piped to customers to use for cooking.
Solar panels are able to gather the energy from the sun and convert it into electrical energy.
Oil is pumped from beneath the ocean floor and refined into jet fuel to power airplanes.
- 8. Multiple Choice
Which statement correctly describes the Earth's magnetic field?
The geomagnetic north is similar to the south pole of a magnet.
The Earth's magnetic poles are the same magnetic charge at the poles.
- 9. Multiple Choice
When discussing magnetic fields we could say that
metals are magnets because they have more electrons than non–magnetic materials
metals can become magnetic if they have many spinning electrons that create magnetic fields
- 10. Multiple Choice
Which statement correctly describes the interaction between magnetic poles?
North and south poles repel each other.
North and south poles attract each other.
Two north poles will attract each other.
- 11. Multiple Choice
The parents of a young child carefully placed plastic plug protectors in all the electrical outlets in their house. Which statement best describes the role of the plastic protectors?
Electrical outlets contain metal wires that are good conductors of electricity. In order to promote electrical safety, the parents covered the outlets with plastic, an insulator that prevents electrical current from flowing to another object.
Plastic is a good conductor of electricity. Placing plastic covers over the electrical outlets allows the electrical current to be redirected back to the plug and ensures the safety of those around the outlets.
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