Using Stored Energy

Front

What makes the flashlight produce light?

Back

A flashlight uses chemical energy stored in batteries to produce light.

Front

What happens when the stored energy in the batteries runs out?

Back

We would have to replace the batteries.

Front

How does a car works?

Back

A car uses chemical energy to produce mechanical energy to turn the wheels and make it move.

Front

Where does a car get energy to run?

Back

It gets this energy from gasoline.

Front

What types of energy transformations need to happen to make the car move?

Back

chemical energy to mechanical energy

Front

People burn oil in lamps to produce light. The table below gives information on the cost and amount of light produced of two kinds of oil burned in lamps.

Which of the following would cost the most?

Back

30 hours of light from burning paraffin oil

Front

Which of the following best describes solar energy changing form into stored energy?

Back

A plant making food through photosynthesis

Front

The diagram provided shows how a butane lighter works. The average butane lighter will produce about 10 minutes of flame before running out of fuel. What change to the lighter would extend the amount of time the butane lighter could produce a flame?

Back

Increase the size of the butane gas tank

Front

Coal is a non-renewable resource that is made from plant matter. The table here provides information of different types of coal burned for fuel. Anthracite makes up less than 2 of all the coal burned in the United States. Based on the data provided, what is one possible explanation for why anthracite is so unpopular as a fuel source?

Back

Anthracite is relatively more expensive than other types of coal.

Front

Batteries work because reactions between chemicals inside of them can generate an electric current. Eventually, all batteries will stop working. What is the most likely reason that batteries can produce a limited amount of energy?

Back

After time, all of the chemicals in a battery are used up.