Unit 11 – Astronomy and Energy Vocabulary Crossword

12345678910111213141516171819202122232425
Across
  1. 5. the force that pulls objects toward one another or toward the center of a planet or star
  2. 8. model the modern idea that the Sun is at the center of the solar system and the planets move around it
  3. 10. model the early idea that the Earth was at the center of the universe and everything moved around it
  4. 13. the different shapes of the Moon we see from Earth during the month
  5. 16. all of space and everything in it including stars planets and galaxies
  6. 17. system the Sun and all the planets and other objects that move around it
  7. 19. the spinning movement of the Earth on its axis that causes day and night
  8. 20. a vehicle or machine designed to travel in space
  9. 21. of light an object that gives off light such as the Sun or a lamp
  10. 22. a large group of billions of stars gas and dust held together by gravity
  11. 24. an instrument that makes distant objects appear closer by collecting light
  12. 25. a scientist who studies space stars planets and galaxies
Down
  1. 1. bang the theory that the universe began with a huge explosion and has been expanding ever since
  2. 2. a large object that orbits a star and does not produce its own light
  3. 3. the path one object takes as it moves around another object such as the Earth around the Sun
  4. 4. the layer of gases that surrounds a planet such as the Earth
  5. 6. the imaginary line through the Earth around which it spins
  6. 7. moon the phase when the side of the Moon facing Earth is dark
  7. 9. planets the four solid inner planets made mostly of rock and metal
  8. 10. giants the large outer planets made mostly of gas
  9. 11. to bounce light from one surface to another such as sunlight off the Moon
  10. 12. to seem or look as if something is happening when it may not be moving
  11. 14. moon the phase when the whole face of the Moon is lit by the Sun
  12. 15. a group of stars that form a pattern in the night sky
  13. 18. the ability to do work or cause change often needed for movement in space
  14. 23. a small rocky body that orbits the Sun usually found between Mars and Jupiter