Science 8 Crossword

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Across
  1. 3. The solar system consists of a large, massive star in the center with smaller planetary bodies held in orbit by ________.
  2. 4. If a species has lots of different kinds of traits in their individuals, they are considered to have a lot of genetic ____________, which is helpful for them to adapt if their environment changes.
  3. 11. What season does the Northern Hemisphere receive the least direct solar energy?
  4. 12. These are similar anatomical structures between different species that suggest they evolved from a common ancestor. (2 words, no space)
  5. 13. Gravity increases when mass increases and ____________ the further you get between objects.
  6. 15. Digital signals are more reliable than analog signals because they distort less when transmitted over longer _____________.
  7. 17. A force is a push or pull, measured in Newtons (N). If it is ___________, there will be no change in motion.
  8. 19. If a baseball bat hits a ball with 500 N of force, the ball will also exert a force of 500 N on the bat, but the force is exerted in the _________ direction.
  9. 20. The variable that is measured by taking data to see if there was an effect of changing the independent variable on purpose.
  10. 24. Solar energy travels in a straight line from the sun and hits different parts of the curved Earth at different angles. This means that less direct light hits the poles and more direct light hits the_____________.
  11. 25. This lunar phase is when lunar eclipses happen. (2 words no space)
  12. 26. The variable that is purposely changed in an experiment to see if there is a cause/effect relationship
  13. 27. In this type of selection, humans choose the individuals with desired traits to have offspring.
  14. 28. This type of energy is stored in something.
Down
  1. 1. If two species have several embryological stages in common, this suggests that they are closely related, because they share __________ inherited from a common ancestor.
  2. 2. The genetic code provides the instructions for these to be made, which control the traits of an organism
  3. 5. With charged particles and magnetic fields, like charges/poles repel (+, +) (-,-) (N, N) (S, S) and opposite charges/poles ________ (-, +) (N, S).
  4. 6. If a wave has a higher amplitude and/or a shorter ___________, it carries more energy.
  5. 7. Any change to a gene, DNA sequence, or chromosome that may be beneficial, harmful, or neutral depending on an organism’s environment.
  6. 8. There is not a solar eclipse every month because the moon’s ________ is tilted relative to the Earth’s.
  7. 9. What season does the Northern Hemisphere receive the most direct solar energy?
  8. 10. In this type of selection, the environment determines who the most successful individuals will be, which will pass on their traits to offspring.
  9. 14. The illuminated portion of the ________, as viewed from Earth, changes over the course of a month because its location changes relative to the Earth.
  10. 16. Newton’s third law states that during a collision there are equal forces on each object, but in opposite directions. However, the objects will experience a different change in velocity after the collision depending on their __________.
  11. 18. This is the thing that determines the most successful traits to be the parents of the next generation.
  12. 21. This lunar phase is when solar eclipses happen. (2 words, no space)
  13. 22. True or False? The Earth is the same distance from the sun at any point in its orbit throughout the year. It does not matter if it is summer or winter in either hemisphere.
  14. 23. This type of energy is due to something’s motion or speed.