Environmental Science Worksheet-8

Environmental Science Worksheet-8

1. What chemical is used to kill bacteria in city water supply?

(a) Fluoride                                    (b) Chlorine

(c) Iodine                                        (d) Antibiotic medicine

2. What two factors drive the surface current in the ocean?

(a) Wind and Earth's temperature

(b) Wind and Earth's rotation

(c) Ice cap and Earth's rotation

(d) Volcanoes and ocean's surface

3. What does an ecosystem contain?

(a) Living things and nonliving things

(b) Only living things

(c) Only nonliving things

(d) Nonliving things and atmosphere

4. In an ecosystem, living things and nonliving things ____ with each other.

(a) dominate     (b) destroy         (c) interact        (d) protect

5. What is the role of decomposers in the Food Chain?

(a) They fuse dead plants and animals into complex organics.

(b) They break down dead plants and animals into simple nutrients.

(c) They consume food from producers.

(d) They consume food from consumers.

6. Which of the following is true?

(a) Herbivores are animals that eat plants.

(b) Carnivores are animals that eat herbivores.

(c) Omnivores are animals that eat plants and herbivores both.

(d) All of the above

7. Which type of rock is formed when molten magma cools down?

(a) Ferrous                                    (b) Sedimentary

(c) Igneous                                     (d) Metamorphic

8. Which type of rock is formed when sediment is compacted or cemented together?

(a) Igneous                                    (b) Metamorphic

(c) Sedimentary                            (d) Fossil

9. The ability of an animal to hide by looking like its surroundings is called _____.

(a) Blending                                   (b) Transformation 

(c) Mimicry                                   (d) Camouflage

10. What do various plants living together in a place compete for?

(a) Air and soil

(b) Fruit and animals

(c) Sunlight, water and nutrients

(d) Water and bugs

Answer Key:

(1)–(b); (2)–(b); (3)–(a); (4)–(c); (5)–(b); (6)–(d); (7)–(c); (8)–(c); (9)–(d); (10)–(c)