Environmental Science Worksheet-3

Environmental Science Worksheet-3


  1. What do animals produce by breathing out in the Carbon Cycle?

(a) Oxygen                                     (b) Carbon Dioxide

(c) Nitrogen                                   (d) Coal


  1. What happens to the decaying plants and animals?

(a) It is dissolved into the ocean.       

(b) It evaporates slowly.

(c) It turns into carbon dioxide and fossil fuel.

(d) It turns into carbon dioxide and plastic.


  1. What are the "faults" on earth's crust?

(a) Vertical lines in the crust called faults

(b) Horizontal lines in the crust called faults

(c) Molten rocks in the crust called faults

(d) Cracks in the crust called faults


  1. An _______ is the result of a sudden release of energy in the Earth's crust along the faults.

(a) Molten mineral                      (b) Magma

(c) Earthquake                              (d) Lava


  1. What are the three types of biotic factors in an ecosystem?

(a) Producers, consumers and destroyers

(b) Producers, processors and destroyers

(c) Producers, consumers and decomposers

(d) Processors, consumers and destroyers


  1. What do producers produce for consumers in an ecosystem?

(a) Food and oxygen          (b) Grass and oxygen

(c) Food and nitrogen                 (d) Milk and meat


  1. ______ (also called powder color) of a mineral is the color of the powder produced when it is dragged across a hard and rough surface.

(a) Fluorite        (b) Crystal         (c) Streak           (d) Luster


  1. ______ is a description of the way light bounces off the surface of a crystal, rock, or mineral.

(a) Reflection    (b) Shiny            (c) Streak           (d) Luster


  1. What is rock cycle?

(a) Changing of rocks from one big rocks to smaller rocks.

(b) Changing of rocks from one form to another in a never-ending cycle.

(c) Melting and freezing of rocks.

(d) Erosion of rocks.


  1. Which of the following action can ruin the soil?

(a) Spraying chemicals               (b) Burying hazardous wastes

(c) Cutting down forests.            (d) All of the above


Answer Key:

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