Question

a device that converts thermal energy into mechanical energy is a
radiator
conductor
heat mover
heat engine
multiple choice 5 points
water makes a good coolant because it has a
low freezing point
low specific heat
high specific heat

Explanation:

First Question (A device that converts thermal energy into mechanical energy is a ____)

• A radiator is used to transfer heat (usually for heating, not converting to mechanical energy).
• A conductor is a material that conducts heat or electricity, not a device for energy conversion.
• "Heat mover" is not a standard term for this energy conversion.
• A heat engine is defined as a device that converts thermal energy (heat) into mechanical energy (e.g., steam engines, car engines).

• A low freezing point is not the reason water is a good coolant (coolants need to absorb heat, not relate to freezing easily).
• Low specific heat would mean it can't absorb much heat, which is bad for a coolant.
• High specific heat means water can absorb a large amount of heat energy with a relatively small temperature change, making it effective at cooling (it can take in heat without getting too hot quickly).
• High boiling point is not the primary reason for being a good coolant (cooling happens below boiling in most cases).

Answer:

D. heat engine

Second Question (Water makes a good coolant because it has a ____)