Across
- 2. model of the universe where the sun is at the center of the revolving planets and stars (C6, L1)
- 4. loose collections of ice, dust, and small rocky particles whose orbits can be very long, narrow ellipses (C6, L6)
- 5. a packet of light energy (C4, L1)
- 7. the rate at which velocity changes (C1,L1)
- 9. a device that measures small currents (C2, L4)
- 10. a body that orbits a planet (C5, L1)
- 12. the bending of waves due to change in speed (C3, L3)
- 13. a body that orbits the sun, is large enough to have become rounded by its own gravity, and has cleared the area of its orbit (C5, L1)
- 14. areas of gas on the sun's surface that are cooler than the gases around them. (C6, L3)
- 15. a device that transforms mechanical energy into electrical energy (C2, L5)
- 19. when a wave hits a surface, any part of the wave that cannot pass through the surface bounces back (C3, L3)
- 23. model of the universe where Earth is at the center of the revolving planets and stars (C6, L1)
- 25. a current with charges that flow in one direction (C2, L5)
- 29. the relationship between electricity and magnetism (C2, L3)
- 31. electromagnetic waves with the longest wavelengths and lowest frequencies (C4, L2)
- 32. rocky objects, most of which are too small and too numerous to be considered planets or dwarf planets (C6, L6)
- 33. a measure of the force of gravity on an object (C1, L2)
- 34. a disturbance involving the transfer of energy from place to place (C3, L1)
- 35. the force that two surfaces exert on each other when they rub against each other (C1, L2)
- 36. an oval shape (C6, L1)
- 39. the sun, the planets, their moons and a variety of smaller objects (C6, L2)
- 40. a push or a pull (C1, L1)
Down
- 1. the combination of all the forces on an object (C1, L1)
- 3. the interaction of waves that meet (C3, L3)
- 6. a force that causes an object to move in a circular path (C1, L5)
- 8. a pattern or group of stars that people imagine represent a figure, animal, or object (C5,L1)
- 11. electromagnetic waves with wavelengths shorter than those of microwaves (C4, L2)
- 16. the maximum distance the medium vibrates from the rest position (C3, L2)
- 17. the area of magnetic force around a magnet (C2, L2)
- 18. a constantly reversing current (C2, L5)
- 20. the attraction or repulsion of magnetic materials (C2, L1)
- 21. a repeated back-and-forth or up-and down motion (C3, L1)
- 22. the rise and fall of ocean water that occurs ever 12.5 hours or so (C5, L3)
- 23. a force that pulls objects toward each other (C1, L2)
- 24. mass X velocity = THIS (C1, L4)
- 26. resistance to change in motion (C1, L3)
- 27. chunks of rock or dust smaller than asteroids (C6, L6)
- 28. the number of waves that pass a given point in a certain amount of time (C3, L2)
- 30. electromagnetic waves that have shorter wavelengths and higher frequencies than radio waves (C4, L2)
- 37. the ability to do work (C3, L1)
- 38. the distance between two corresponding parts of a wave (C3, L2)