Spring Science Final Review

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Across
  1. 2. The rise and fall of ocean water is called _____.
  2. 4. This is the smallest soil particle size.
  3. 6. Contour lines that are close together indicate a ____ slope.
  4. 8. The two factors that combine to keep Earth and the moon in their orbits are inertia and _____.
  5. 10. The four mass movements of soil are landslides, mudflows, _____ and creep.
  6. 13. The eroded materials carried by water or wind are _____.
  7. 14. The summer solstice is the _____ day of the year.
  8. 15. The soil particles sizes are _____, sand, silt, clay
  9. 16. This particle of an atom has a neutral charge
  10. 17. Soil that is rich in humus has high _____.
  11. 19. This type of tide occurs when the sun is at right angles to the line between Earth and the moon.
  12. 20. What happens to the force of gravity when the distance between the objects increase?
  13. 22. Contour lines that form a closed loop with small dashes pointing inside of the loop represents a _____
  14. 24. A landform's height above sea level is called _____.
  15. 26. The growth of plant roots and animal activity may result in _____ weathering.
  16. 29. This natural disaster is difficult to predict and happens infrequently.
  17. 31. Newton's law of universal _____ states that every object in the universe attracts every other object.
  18. 32. The smallest particle of an element is a(n) _____
  19. 33. Most of the work of mixing humus within the soil is done by _____.
  20. 35. Materials that allow the charges of an electric current to move freely through them are called ____.
  21. 37. It takes the moon abount one _____ to orbit around the Earth.
  22. 39. This particle of an atom has a negative charge
  23. 40. A hot and wet climate causes weathering to take place at a _____ rate.
  24. 41. A device used to open and close a circuit is a _____
  25. 42. Contour lines that form a closed loop represent a _____
  26. 43. Horizon A is high in _____ matter.
  27. 45. A rock containing iron becomes soft and crumbly and reddish-brown in color. It probably has been chemically weathered by _____.
Down
  1. 1. Earth's rotation takes about one _____.
  2. 3. The simplest pure substance that cannot be broken down into any other substances is called a(n) ____
  3. 5. The type of mechanical weathering in which rock is worn away by the grinding action of other rock particles is called _____
  4. 6. When it is winter in the northern hemisphere, it is _____ in the southern hemisphere.
  5. 7. Protons and neutrons are located in the atom's ____
  6. 9. The summer _____ is June 21.
  7. 11. What happens to the force of gravity when the masses of the objects increase?
  8. 12. This particle of an atom has a positive charge
  9. 18. One complete revolution of Earth around the sun takes about one _____.
  10. 21. Natural disasters such as earthquakes and ____ can create landforms such as mountains.
  11. 23. A complete, unbroken path through which electric charges can flow is a(n) _____ (two words)
  12. 25. The shape of the land is called _____.
  13. 27. The most important factors in determining the rate of weathering are rock type and _____.
  14. 28. Two variables that affect the force of gravity are _____ and mass.
  15. 30. Plateaus can have high elevation and _____ relief.
  16. 34. The magnetic ____ are the areas of the magnet where the magnetic force is strongest
  17. 35. Acid rain falling on rocks over a period of years is an example of _____ weathering.
  18. 36. This type of tide occurs when the sun, moon, and Earth line up.
  19. 38. Mountains have high elevation and _____ relief.
  20. 44. The _____ of an area is the difference in height between its highest and lowest point.