Which of the following best describes the conversion of potential energy to kinetic energy as shown in the images of the anvil and the bow and arrow?

Potential energy is stored and then released as kinetic energy when the object is set in motion.

Kinetic energy is stored and then released as potential energy when the object is set in motion.

Potential energy and kinetic energy are always equal at all times.

Kinetic energy is only present when the object is at rest.

Which statement is NOT true according to the 2nd Law of Thermodynamics?

A heat engine can continuously convert heat into work with 100% efficiency.

Heat can be completely converted into work in a single process.

All attempts to construct a 100% efficient heat engine have failed.

Continuous conversion of heat into work requires a cyclic process.

Which of the following statements about heat pumps and heat engines are correct?

A heat pump requires work to move heat from low to high temperature.

A heat engine converts heat from high temperature to work and heat at low temperature.

Both devices operate between two temperature reservoirs.

A heat engine requires work to move heat from low to high temperature.

Complete the energy changes for power stations using non-renewable energy : ___________________ --> heat energy --> __________________ --> electrical energy

chemical energy, kinetic energy

chemical energy, potential energy

kinetic energy, chemical energy

What is a problem commonly associated with nuclear power facilities?

It is difficult to dispose of wastes.

A small quantity of energy is produced.

It is impossible to control nuclear fission.

Reaction products contribute to acid rain

What happens to the heat energy that is produced in a nuclear reactor?

It is used to boil water to produce vapor

It is used to turn a wind turbine

Complete the energy changes for power station using nuclear fuel : ___________________ --> ____________________ --> _______________________ --> electrical energy

nuclear energy, heat energy, kinetic energy

heat energy, nuclear energy, kinetic energy

kinetic energy, nuclear energy, heat energy

How does the process of energy conversion differ between hydroelectric and wind power generation?

Hydroelectric uses water at higher levels, wind uses moving air; both convert kinetic to mechanical energy but use different sources.

Both use water as the primary energy source.

Wind power uses turbines, hydroelectric does not.

Hydroelectric directly generates electricity without mechanical energy.

Laws of Thermodynmamics and Efficiency Lesson

57 questions

Show all answers

1.

SLIDE QUESTION

30 sec • Ungraded

2.

SLIDE QUESTION

30 sec • Ungraded

3.

SLIDE QUESTION

30 sec • Ungraded

4.

SLIDE QUESTION

30 sec • Ungraded

5.

FILL IN THE BLANKS QUESTION

30 sec • 1 pt

The 1st Law of Thermodynamics is also known as the Law of (a) .

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to the 1st Law of Thermodynamics, when a boulder falls off a cliff, its potential energy is converted into kinetic energy. What is the equation that represents the conservation of energy in this scenario?

1/2mv^2 = mgh

F = ma

P = IV

W = Fd

7.

SLIDE QUESTION

30 sec • Ungraded

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