Question

question 2 (2 points) listen which of the following explanations best describes the energy transformations within a closed system? chemical energy is converted into thermal energy through combustion, and thermal energy is then transformed into mechanical energy in a steam engine. electrical energy is converted into kinetic energy in a wind turbine, and kinetic energy is further transformed into sound energy in a speaker. light energy from the sun is converted into mechanical energy in a solar - powered car, and mechanical energy is further transformed into electrical energy to power the cars systems. potential energy is converted into nuclear energy in the core of the earth, and nuclear energy is then transformed into electromagnetic energy in the form of earthquakes.

Explanation:

1. Analyze option A: In a steam - engine system, chemical energy in fuel is converted to thermal energy via combustion, and then thermal energy is transformed to mechanical energy. This is a common energy - transformation sequence in a closed system like a steam - engine setup.
2. Analyze option B: A wind turbine converts kinetic energy (from wind) to electrical energy, not the other way around as stated.
3. Analyze option C: A solar - powered car converts light energy to electrical energy first, and then electrical energy to mechanical energy, not light to mechanical directly.
4. Analyze option D: Earth's core has nuclear energy due to radioactive decay, but earthquakes are not a conversion of nuclear energy to electromagnetic energy. Earthquakes are related to the release of elastic potential energy in the Earth's crust.

Answer:

A. Chemical energy is converted into thermal energy through combustion, and thermal energy is then transformed into mechanical energy in a steam engine.