Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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In the figure shown, point A is called a _____.
a. | amplitude | c. | rarefaction | b. | crest | d. | trough |
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2.
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In the figure shown, point B is called a _____.
a. | compression | c. | diffraction | b. | crest | d. | trough |
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3.
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The SI unit for frequency is the _____.
a. | decibel | c. | hertz | b. | degree | d. | meter |
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4.
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In the figure shown, the light waves change direction as a result of
_____.
a. | diffraction | c. | refraction | b. | reflection | d. | reverberation |
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5.
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What conclusion can you draw from the information shown in this figure?
a. | Sound intensity is greater in water than in air. | b. | Sound waves can move
more quickly through liquids than through solids. | c. | The frequency of sound increases with wave
speed. | d. | The speed of sound varies with the material in which the waves
travel. |
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6.
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Based on the figure shown, sound waves travel most slowly through which of the
following?
a. | air | c. | rubber | b. | glass | d. | water |
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7.
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Loudness is the human perception of sound wave _____.
a. | frequency | c. | pitch | b. | intensity | d. | speed |
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8.
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The part of the ear that amplifies sound vibrations is the _____.
a. | cochlea | c. | inner ear | b. | middle ear | d. | outer ear |
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9.
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Sound intensity is measured in _____.
a. | decibels | c. | infrared waves | b. | hertz | d. | nanometers |
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10.
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The brightness of a light is determined by _____.
a. | air temperature | c. | wavelength | b. | intensity of light waves | d. | wave speed |
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11.
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The electromagnetic waves with the highest energy are _____.
a. | gamma rays | c. | sound waves | b. | infrared waves | d. | ultraviolet
waves |
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12.
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How much of the energy emitted by the Sun reaches Earth?
a. | all | c. | most | b. | a small fraction | d. | nearly half |
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13.
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This figure shows an illustration of a _____.
a. | compressional wave | c. | radio wave | b. | electromagnetic wave | d. | reverberation |
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14.
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The “normal” in the figure shown is a line that makes an angle of
_____.
a. | 30 degrees | c. | 90 degrees | b. | 45 degrees | d. | 180 degrees |
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15.
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Based on the figure shown, which of the following sounds would be most likely to
cause people discomfort?
a. | chain saw | c. | rustling leaves | b. | noisy restaurant | d. | vacuum cleaner |
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16.
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Light travels fastest in _____.
a. | empty space | c. | solids | b. | fresh water | d. | seawater |
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17.
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As the frequency of a sound gets higher, so does its _____.
a. | intensity | c. | pitch | b. | loudness | d. | wavelength |
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18.
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All of the following are transverse waves except _____.
a. | gamma rays | c. | sound waves | b. | radio waves | d. | X rays |
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19.
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The electromagnetic waves with the highest frequency are _____.
a. | gamma rays | c. | radio waves | b. | microwaves | d. | visible light |
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20.
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The temperature at which a liquid becomes a gas is the _____ point.
a. | freezing | c. | condensation | b. | boiling | d. | melting |
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21.
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Density depends on _____.
a. | weight | c. | mass and volume | b. | mass | d. | volume |
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22.
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The melting point of silver is a _____.
a. | chemical change | c. | physical property | b. | chemical property | d. | physical change |
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23.
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You can separate sugar from sand because sugar is _____ and sand is not.
a. | malleable | c. | soluble in water | b. | ductile | d. | acidic |
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24.
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Titanium reacts less with oxygen than most metals do. This is a _____.
a. | chemical property | c. | chemical change | b. | physical change | d. | physical
property |
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25.
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When a peeled banana turns black, it is a _____.
a. | chemical change | c. | change of state | b. | physical change | d. | thermal change |
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26.
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Matter that has the same composition and properties throughout is called a(n)
_____.
a. | substance | c. | atom | b. | mixture | d. | isotope |
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27.
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When two pure substances are combined so that each of the pure substances
retains its own properties, the result is a(n) _____.
a. | compound | c. | element | b. | mixture | d. | isotope |
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28.
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How many atoms of calcium are in a unit of calcium phosphate whose formula is
Ca3(PO4)2?
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29.
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In general, nonmetals are _____.
a. | good conductors of electricity | c. | good conductors of
heat | b. | malleable and ductile | d. | gases at room temperature |
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30.
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Water and hydrogen peroxide have different properties because _____.
a. | they are made from different elements | b. | one contains a greater percentage of oxygen
than the other | c. | one is a compound and one is a mixture | d. | only water follows the law of definite
proportions |
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31.
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The millions of compounds that exist are made from approximately _____
elements.
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32.
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Vegetable soup is an example of a _____.
a. | homogeneous mixture | c. | compound | b. | heterogeneous mixture | d. | pure substance |
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33.
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When someone stirs cocoa powder into hot water or hot milk, the cocoa changes
from a _____.
a. | homogeneous mixture into a compound | b. | homogeneous mixture into a non-uniform
mixture | c. | compound into a heterogeneous mixture | d. | heterogeneous mixture into a homogeneous
mixture |
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34.
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A certain atom has 26 protons, 26 electrons, and 30 neutrons. It mass number is
_____.
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35.
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Which of the following CANNOT be classified as matter?
a. | an odorless, colorless gas | c. | alpha particles | b. | the heat given off
by a light bulb | d. | an electron
cloud |
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36.
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_____ has mass and takes up space.
a. | Thought | c. | Air | b. | Light | d. | Emotion |
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37.
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The substance being dissolved to form a solution is the _____.
a. | solvent | c. | precipitate | b. | solute | d. | mixture |
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38.
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A solution that contains a large amount of solute compared to solvent is
described as _____.
a. | dilute | c. | unsaturated | b. | heterogeneous | d. | concentrated |
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39.
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Which of the following properties is NOT characteristic of acidic
solutions?
a. | has a sour taste | c. | feels slippery | b. | conducts electricity | d. | is corrosive to certain
metals |
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40.
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When aqueous solutions of table salt and silver nitrate are mixed, a white solid
forms. This solid is _____.
a. | soluble | c. | an alloy | b. | a precipitate | d. | a solute |
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41.
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Stainless steel is an example of a _____ solution.
a. | liquid-solid | c. | solid-solid | b. | solid-liquid | d. | gas-solid |
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42.
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Which of the following types of substance would be least likely to dissolve in
water?
a. | a nonpolar molecule like cholesterol | b. | a polar molecule like ethyl
alcohol | c. | an ionic compound, such as magnesium chloride | d. | a polar molecule
like the fruit sugar, fructose |
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43.
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The amount of table sugar that will dissolve in 1 kg of water can be increased
by _____.
a. | stirring the solution | b. | heating the solution | c. | breaking the sugar
into smaller pieces | d. | doing any of the
above |
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44.
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A solution with a pH of 13 is a _____.
a. | weak acid | c. | strong acid | b. | weak base | d. | strong base |
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45.
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Each substance written to the right of the arrow in a chemical equation is a
_____.
a. | reactant | c. | precipitate | b. | product | d. | catalyst |
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46.
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When the following chemical reaction is balanced, what number is placed before
NH 3? N2 + 3H2 ® NH3
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47.
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Which chemical equation is balanced?
a. | Na + O2 ® Na2O | c. | 2Na +
2O2 ® 2Na2O | b. | 2Na2 +
O2 ® 2Na2O | d. | 4Na + O2 ® 2Na2O |
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48.
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Which one of the following factors would not speed up a chemical
reaction?
a. | increasing the concentration of a reactant | b. | adding a
catalyst | c. | raising the temperature | d. | making the reactant particles
larger |
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49.
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Which of the following materials will burn the fastest in open air?
a. | a log, two feet in diameter | b. | two logs, each one foot in
diameter | c. | a pile of small splinters made from a two-foot diameter log | d. | Both logs and the
splinters will burn at the same rate. |
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50.
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A substance that speeds up chemical reactions in the human body is _____.
a. | an inhibitor | c. | polar | b. | an enzyme | d. | a prohibitor |
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