Energy and thermodynamics: fill in the blanks · Grade 11

The word bank and sentences

Directions: Read each sentence. Choose the best word from the word bank and write it on the line. Some words are not used.

• Word bank: cross out each word as you use it
• work ____ absolute zero ____ kelvin 273 efficient · colder first law ____ latent heat ____ entropy ____ specific heat ____ heat pump
• 1 Water's high · helps oceans moderate coastal climates.
• 2 A · can deliver more heat energy than the electrical energy it uses.
• 3 The · of thermodynamics says energy is conserved.
• 4 Heat flows naturally from hotter objects to · ones.
• 5 No heat engine can be 100 percent ____.
• 6 Absolute zero is 0 kelvin, or about minus · degrees Celsius.
• 7 Sweat cools you because evaporating water absorbs ____.
• 8 James Joule showed that mechanical · can be converted into heat.
• 9 The second law says the total · of an isolated system never decreases.