Crossword Puzzle

NF Chapter 4.1 - Mechanical & Chemical Weathering


  1. __________ weathering is the breakdown of rocks by chemical reactions that change the rocks' makeup or composition. (chemical)
  2. When iron gets wet, oxygen in the air reacts with it. The iron turns red and gets weaker. This is called __________. (rusting)
  3. Many common minerals contain __________, so these minerals rust and make rocks smaller and weaker. (iron)
  4. Rocks with a greater __________ area will weather faster. (surface)


  1. One type of mechanical weathering, called __________ release, where rocks get pushed up to the surface and release the pressure that was on them from underground. (pressure)
  2. One type of mechanical weathering, called __________, where water or other rocks rub on a rock and break it down. (abrasion)
  3. Air pollutants like sulfur dioxide and nitric oxide make acid rain more __________. (acidic)
  4. Weathering takes a very __________ time. Most weathering takes place over hundreds to __________ of years. (long)
  5. A warmer, wetter __________ makes rocks weather faster. (climate)

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