Energy Transfer

In a four-stroke internal combustion engine, what is the primary energy transformation that drives the piston?

• Electrical energy to thermal energy

• Mechanical energy to chemical energy

• Chemical energy to mechanical energy

• Thermal energy to light energy

Which of the following best describes the two fundamental ways energy can be transferred between systems?

• Light and sound

• Kinetic and potential

• Heat and work

• Chemical and electrical

When a solar panel is used to power a heater that warms water, what is the correct sequence of energy transformations?

• Electrical → Light → Thermal

• Light → Electrical → Thermal

• Chemical → Electrical → Thermal

• Mechanical → Electrical → Light

Thermodynamics is primarily concerned with the study of:

• The composition and structure of matter

• The transfer and transformation of energy, heat, and work

• The rates of chemical reactions

• The properties of light and sound waves