Impact 3 U6 Grammar 1

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Across
  1. 3. A scientist who studies celestial objects
  2. 14. Essential or basic
  3. 15. to To result in or cause something
  4. 16. A tool or device for a particular purpose
  5. 17. A manmade or natural object that orbits a planet
  6. 18. A unit of measurement, often for temperature or angles
  7. 19. A particular part or feature of something
Down
  1. 1. A feeling of amazement and curiosity
  2. 2. The layer of gases surrounding a planet
  3. 4. To provide with necessary tools or equipment
  4. 5. Evidence that something is true
  5. 6. To move forward or make progress
  6. 7. Something that is necessary or compulsory
  7. 8. To discover or notice something, often something hidden
  8. 9. Very large or extensive
  9. 10. A large, flat area of land with few trees
  10. 11. The visible features of an area of land
  11. 12. A low area of land between hills or mountains
  12. 13. Tiny particles of dirt or debris