Physics QZ on G - Conservation of Energy

Who proposed the principle of the conservation of energy?

• Isaac Newton

• Galileo Galilei

• Albert Einstein

• James Prescott Joule

In what year did James Prescott Joule deliver his lecture on the conservation of energy?

• 1852

• 1875

• 1843

• 1861

What does the principle of conservation of energy state?

• Energy can be created and destroyed.

• Energy is always conserved, completely and absolutely.

• Energy can only be transformed by physical means.

• Energy is conserved only in closed systems.

Which of the following is NOT a form of energy transformation?

• Kinetic energy to sound energy

• Chemical energy to thermal energy

• Potential energy to kinetic energy

• Electrical energy to gravitational energy

How much of the sun's energy is absorbed by the earth?

• 5%

• 3%

• 10%

• 1%

What happens to the energy stored in the apple when Ike eats it?

• It is used to maintain metabolic processes.

• It is converted into kinetic energy.

• It is stored as potential energy.

• It dissipates as sound energy.

What are the two forms of mechanical energy mentioned?

• Magnetic and elastic

• Potential and kinetic

• Nuclear and electrical

• Thermal and chemical

What does the principle of conservation of energy imply about the creation or destruction of energy?

• It happens under certain conditions.

• It is a common occurrence in nature.

• It only happens in artificial systems.

• It does not happen.