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Reading Terminology and Jargon Practice Exercises (page 3)

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Updated on Sep 28, 2011

Practice 3: Manage Minerals

Read the selection, and then answer the questions that follow.

(1) Rocks are made of minerals. Those are substances that can't be classified as "animals" or "vegetables." There are many different minerals. Each can be identified by its properties, or characteristics. To identify a mineral, scientists test its streak, hardness, luster, color, and cleavage.
(2) To test the streak, the mineral is rubbed on a marble slab to see if it leaves a mark, and if so, what color mark. To test hardness, the mineral is scratched on glass to see if it scratches the glass, and if so, how much. Scientists can see the mineral's luster, or shininess, to know if it's metallic or nonmetallic. The mineral's color is also obvious to the eye. Finally, the mineral is checked for cleavage—breaks, or fractures, along weak points.
(3) An accurate identification of a mineral can't be done by checking just one property. Many minerals have similar properties, such as the same hardness or color. Always test all the properties before stating for sure which mineral it is.
11. In which topic would you most likely find words like minerals and metallic?
a. music
b. cooking
c. science
d. ballet
12. Every substance is classified as either an animal, a vegetable, or a
a. mineral.
b. human.
c. solid.
d. liquid.
13. What is the meaning of streak as used in the article?
a. run fast
b. a mark of color
c. to distort
d. to stretch

Answers 

1. d
2. c
3. d
4. b
5. c
6. d
7. c
8. a
9. b
10. c
11. c
12. a
13. b
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