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Which object will MOST likely be repelled by the metal sphere?
A paper with a negative charge
A glass with a positive charge
A magnet with its north pole facing the sphere
A magnet with its south pole facing the sphere
Carlos was playing on a slide on a sunny summer day. Which property of the slide tells Carlos how much energy the slide absorbed by the sun?
Which of the following is LEAST likely to allow electricity to flow?
Where would the MOST heat occur in a simple circuit?
What type of energy is being transferred to the pot to make the water boil?
What is the primary energy source used by power plants to generate electricity?
Which of these statements about nonrenewable resources is true?
They are inexpensive.
They help keep the air clean.
They can take millions of years to form.
They are used because they are easily removed from the ground.
Dams are built on rivers to hold back water. The water is then released and passes through turbines to produce...
A house is built in a desert, where there is no electricity and very little wind. Which action could lead to operating the electrical appliances in the house that would cause the LEAST amount of environmental pollution?
constructing a small hydroelectric plant
placing solar panels on the roof of the house
using gasoline generators
burning coal or wood
According to the chart, what percentage of energy came from renewable resources?