Science Review:  Chapter 4

Write the letter of the correct meaning on the line before each word.

  (E)   1.  ocean                   A.  a body of fresh water that stays in one place

(C)   2. pollution              B.  waste that can be made into new                                                                                 things and used again

  (A)  3. pond                     C.  waste that harms land, water, or air

(B)  4. recycle                   D.  a moving body of fresh water

(D)  5. stream                    E.  a large body of salt water

Write the word from the box that best completes each sentence.

  6.           Fish that live in a pond can eat water plants and ________. (insects)

  7.          Salmon can move from place to place by swimming in a  ___________. (stream)

  8.          Ocean animals need to live in water that has __________. (salt)

  9.          Plankton are a part of the ocean ___________. (food web)

  10.        Water habitats can be destroyed by ___________. (pollution)

  You will have to color each pair that shows someone helping to care for the air, land, or water.

  (Correct answer: people riding bikes instead of driving cars; people picking up trash; recycling; planting trees)

  What do you think will happen if people do not stop pollution?  Write on reason to support your answer.

  (Your answer should indicate that many plants and animals would die because their land, air, or water habitats would be spoiled.)

Complete:

1.      Oil spills are a form of ________. (pollution)

2.      We care for the ________by not dumping things in the ocean. (water)

3.      We care for the ________by riding bikes and walking. (air)

4.      We care for the _______by planting trees. (land)

5. What things can you recycle?  (Possible answers: paper, glass, cans, plastic)