Word Wednesday 12

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Across
  1. 2. A new idea, invention, or way of doing something that helps people solve problems or improve their lives.
  2. 4. a renewable energy resource produced using heat from the earth’s interior
  3. 6. things that are happening now or in recent times.
  4. 8. expressions that include variables
  5. 9. a term that does not change
  6. 10. an unknown value represented by a symbol (usually a letter) in mathematical expressions and equations
  7. 14. an energy resource formed in the earth from plant or animal remains (examples: coal, oil, natural gas)
  8. 15. Something important from the past that still affects people today (like traditions, buildings, events or ideas).
Down
  1. 1. Something outside a society’s or country’s control, that influences it (like trade, natural disasters, or contact with other groups).
  2. 3. performing the same operation on both sides of an equation
  3. 5. Something inside a society’s or country’s control, that affects how it develops (like leadership, resources, or decisions people make).
  4. 7. a number, a variable, or the product of numbers and variables
  5. 11. a renewable energy resource produced by ocean tides
  6. 12. a renewable energy resource derived from plant and animal waste
  7. 13. a renewable energy resource produced by the sun’s light or heat