4th Grade Vocab Unit 1

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Across
  1. 3. a living thing that makes its own food
  2. 4. what something does
  3. 6. a clear object that changes the direction of light as it passes through
  4. 7. the dark opening in the center of the eye
  5. 10. how living things are connected through what they eat and what they are eaten by
  6. 13. a test used to discover new information about a question
  7. 14. the specific form and shape of something
  8. 15. the ability to see
  9. 16. an animal that only eats plants
  10. 18. the movement of material through an ecosystem, such as through food chains and food webs
  11. 20. an animal that hunts and eats other animals
  12. 21. a pretend version of something that scientists use when the real thing is too big, small, or complicated to work with
  13. 24. the clear layer in front of the eye
  14. 26. the brain and all the nerves in the body
  15. 28. an animal that eats only other animals
  16. 30. many different food chains found in one place
  17. 31. a living thing that eats other living things food chain how living things are connected through what they eat and what they are eaten by
  18. 32. what comes from the Sun and lamps and makes it possible to see things
Down
  1. 1. active mostly at night
  2. 2. an animal that is hunted by and eaten by another animal
  3. 5. something that tricks or confuses your brain
  4. 8. anything that takes up space; can be in different forms such as solid, liquid, or gas
  5. 9. the parts of the body that carry signals from the senses (eyes, ears, mouth) to the brain
  6. 11. the parts of the body that carry signals from one part of the body to another part
  7. 12. the back of the eye that senses light and sends messages to the brain
  8. 17. the colored part of the eye that is shaped like a donut
  9. 18. a part of the body that attaches to bones and allows the body to move
  10. 19. an animal that eats both plants and animals
  11. 22. to take something apart to study it
  12. 23. a group of things that affect each other and function as a whole
  13. 25. a part of the body that receives, processes, and responds to signals from nerves
  14. 27. nerves the parts of the body that carry signals from the brain to muscles
  15. 29. when light bounces off something