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Engine or refrigerator

Exercise and reference answers

Upper category
Engine
Lower category
Fridge
Items
  1. Category
    Engine
    Item
    Work out
  2. Category
    Engine
    Item
    Power co
  3. Category
    Engine
    Item
    Burns fuel
  4. Category
    Engine
    Item
    Hot source
  5. Category
    Fridge
    Item
    Work in
  6. Category
    Fridge
    Item
    Cools food
  7. Category
    Fridge
    Item
    Evaporator
  8. Category
    Fridge
    Item
    Runs back
Instructions
Send each clue to the engine track or the fridge track.

Explanation

_Source: OpenStax University Physics Volume 2, Chapter 4, The Second Law of Thermodynamics._
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