Energy Flashcardziz 1

Front

How is energy used in a steam locomotive?

Back

It transforms fuel energy into motion and transfers energy to train cars.

Front

One way energy can change an object is:

Back

by changing its shape

Front

Think about the chain of dominoes as a system. What are the system’s inputs and outputs?

Back

The input is the force applied to the first domino, and the output is the falling of the last domino.

Front

How is the process started by the tiny domino at the beginning of the chain able to result in the toppling of the giant domino at the end of the chain?

Back

Because each domino is slightly larger than the previous one, allowing the energy to build up and topple the giant domino at the end.

Front

The energy used by a construction crane to move a steel beam comes from which of the following sources? The crane's fuel or electricity, The wind, The steel beam itself, The ground beneath the crane

Back

The crane's fuel or electricity

Front

Calculate the work done by each robot using W = Fd.

Back

Robot 1: 60 J (20 N x 3 m)
Robot 2: 90 J (30 N x 3 m)
Robot 3: 20 J (10 N x 2 m)
Robot 4: 60 J (30 N x 2 m)

Front

Select the correct statement about the robots' work: Robot A did the greatest amount of work. Robot B did the least amount of work. Robot C and Robot D did the same amount of work. All robots did different amounts of work.

Back

Robot A did the greatest amount of work.

Front

Differences between everyday and scientific uses of 'energy' and 'work'?

Back

In everyday use, energy and work are often used interchangeably to mean effort, while in science, energy is the ability to do work and work is the transfer of energy.

Front

At what point on the car’s path will it have the most kinetic energy in a downhill soapbox derby race?

Back

At the very bottom of the hill.

Front

Engineer It: How might the barricade design need to change if heavier cars were used in a downhill soapbox derby?

Back

The barricade would need to be stronger to stop heavier cars.