14. As energy is transferred or conserved, some of that energy becomes unavailable to do work. What happens to this unavailable energy?(1 point)
Responses
The unavailable energy is destroyed
The unavailable energy is destroyed
The unavailable energy is conducted
The unavailable energy is conducted
The unavailable energy is given off as heat
The unavailable energy is given off as heat
The unavailable energy is given off as microwaves
The unavailable energy is given off as microwaves
Question 15
15. Betsy uses an electric alarm clock to wake up for school. What energy transformation happens in the alarm clock to help her wake up?(1 point)
Responses
chemical energy converts to electrical energy
chemical energy converts to electrical energy
electrical energy converts to heat energy
electrical energy converts to heat energy
sound energy converts to kinetic energy
sound energy converts to kinetic energy
electrical energy converts to sound energy
electrical energy converts to sound energy
The energy transformation that happens in Betsy's electric alarm clock to help her wake up is: electrical energy converts to sound energy.
To answer this question, we need to understand the concept of energy transformation. Energy transformation refers to the process of converting one form of energy into another form.
In the case of an electric alarm clock, it operates using electrical energy. When Betsy sets the alarm and it goes off, an energy transformation takes place to wake her up. Let's look at the options provided:
1. Chemical energy converts to electrical energy: This option is incorrect because there is no mention of any chemical energy source being involved in the operation of the alarm clock.
2. Electrical energy converts to heat energy: This option is incorrect as well because the purpose of the alarm clock is to wake Betsy up, not to produce heat.
3. Sound energy converts to kinetic energy: This option is also incorrect because sound energy is the result of the alarm going off, not the energy transformation that occurs within the alarm clock itself.
4. Electrical energy converts to sound energy: This option is correct. When the alarm goes off, electrical energy is transformed into sound energy, which is what wakes Betsy up.
Therefore, the correct answer is: electrical energy converts to sound energy.