Tetris

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Across
  1. 1. – empty spaces between things
  2. 6. – the study of nature, people, animals, and the world through experiments and research
  3. 7. – increases or improves something
  4. 9. – to move or grow across a larger area or to more people
Down
  1. 2. – a game or activity that makes people think carefully to solve problems
  2. 3. – solid pieces with straight sides used in games or building things
  3. 4. – places where people go to play video games using machines
  4. 5. – written symbols used to form words and sentences
  5. 7. – the part inside the head that controls thinking, memory, and feelings
  6. 8. – the flat part of a computer, phone, or television where pictures appear