SSA Review Day 1

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Across
  1. 4. a group of planets and other bodies that revolve around a star
  2. 6. a huge collection of gas, dust, and billions of stars and their solar systems
  3. 7. based on repeated experiments of observations
  4. 10. a large, round orbits in space that moves around a star
  5. 12. a rock that falls to Earth from space
  6. 15. process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar
Down
  1. 1. the speed at which an object is travelling
  2. 2. large objects made of dust and ice that orbit the Sun
  3. 3. the force applied in one direction is greater than the force applied in the opposite direction
  4. 5. forces acting on an object have equal strength and act in opposite direction
  5. 8. push or pull on an object with mass
  6. 9. massive, luminous sphere of plasma held together by its own gravity
  7. 11. measured as the ration of distance to the time in which the distance was covered
  8. 12. the action or process of moving or changing place or position
  9. 13. a widely accepted idea intended to explain facts or events
  10. 14. an object that orbits a planet or something else that is not a star