Q&A Hero

Q: Which of the following is not a derived quantity? A) Volume B) Speed C) Mass D) Density

Q: A hydrometer is used to measure A) the time for an object to sink. B) water (hydro). C) the volume of a quantity of water. D) liquid density.

Q: In buying a product, a shopper has a choice of the following amounts, all at the same price. Which is the best buy? A) 432 cc B) 1 pint C) 1 half-liter D) 450 mL

Q: An object transported from Earth's surface to the surface of the Moon has A) the same mass, but different weight. B) the same weight, but different mass. C) the same mass and the same weight. D) different mass and different weight. E) none of these.

Q: An object's weight would be different on Earth and on the Moon. Which of the following would also be different? A) Mass density B) Mass C) Length D) Volume E) None of these

Q: One kilogram is the same as A) 1000 g. B) 1/1000 kg. C) 10,000 g. D) 0.001 g.

Q: Which of the following is a unit of mass density? A) kg/m3 B) g/cm2 C) lb/ft3 D) lb/ft2

Q: In the SI, m is the symbol for A) mass. B) meter. C) mole. D) metric.

Q: A cubic centimeter of pure water at maximum density has a mass of A) 1 g. B) 1 kg. C) 1 cg. D) 1 lb. E) none of these

Q: The metric prefix that means one tenth (1/10) is ... A) deka B) deci C) centi D) milli E) none of these

Q: The metric prefix that means ten (10) is A) deci B) deka C) milli D) centi E) kilo

Q: The metric prefix that means one million (1,000,000) is A) centi-. B) mega-. C) milli-. D) nano-.

Q: The metric prefix that means one thousand (1000) is A) kilo-. B) centi-. C) mega-. D) milli-.

Q: The metric prefix that means one-thousandth (1/1000) is A) kilo-. B) centi-. C) milli-. D) nano-.

Q: The metric prefix that means one-hundredth (1/100) is A) kilo-. B) centi-. C) mega-. D) milli-.

Q: The meter is presently defined as A) one ten-millionth of the diameter of Earth. B) the wavelength of a line in the spectrum of krypton-86. C) the length of a platinum-iridium bar. D) the distance light travels in a vacuum in a very short time.

Q: The meter was defined originally as A) one ten-millionth of the diameter of Earth. B) one ten-millionth of the distance from the equator to the North Pole. C) the wavelength of a line in the spectrum of krypton-86. D) the length of a platinum-iridium bar.

Q: In what year did the United States officially adopt the metric system? A) 1893 B) 1995 C) 2011 D) 1776 E) none of these

Q: The current definition of a kilogram is the mass of a platinum-iridium cylinder kept in A) the United States. B) France. C) England. D) Japan.

Q: The standard unit of time, the second, is now defined with reference to A) the Earth's revolution period. B) the mean solar day. C) the cesium-133 atom. D) the Earth's rotation period.

Q: The standard unit of length, the meter, is now defined with reference to A) a meridian on the Earth. B) the French metre. C) the speed of light. D) a platinum-iridium bar. E) a member of the royal family.

Q: The standard unit of distance in the mks system is the A) centimeter B) inch C) kilometer D) meter E) second

Q: The standard unit of time in the mks system is the A) meter B) kilogram C) second D) minute E) microsecond

Q: The standard unit of mass in the mks system is the A) meter B) kilogram C) pound D) second E) gram

Q: Which of the following is nota standard metric unit? A) Kilogram B) Meter C) Second D) Gram

Q: Which has more volume, a liter or a quart? A) A liter B) A quart C) Both are the same D) Neither describes volume

Q: Which statement is incorrect? A) A kilogram has an equivalent weight greater than that of a pound. B) A kilometer is longer than a mile. C) A meter is longer than a yard. D) A liter is larger than a quart.

Q: The mass of a cubic meter of water is A) 1 metric ton. B) 100 kg. C) 100 L. D) 1 lb.

Q: Which has a larger volume, a liter of water or a liter of mercury (a liquid metal)? A) water B) mercury C) none of these

Q: Which has a larger mass, a liter of water or a liter of mercury (a liquid metal)? A) mercury B) water C) none of these

Q: Which fundamental quantity does the average person measure most often every day? A) Mass B) Length C) Time D) Electric charge

Q: Which of the following is not a fundamental quantity? A) Weight B) Length C) Time D) Mass

Q: The standard unit of time is the A) hour. B) day. C) second. D) minute.

Q: A standard unit A) is the same in all systems of units. B) may not be fixed in value. C) is found only in the British system. D) is used for taking accurate measurements. E) is found only in the metric system.

Q: A successfully tested hypothesis may take on the status of a(n) A) experimental result. B) theory. C) scientific law. D) concept. E) superior hypothesis.

Q: A very tentative explanation of observations of some regularity of nature is a(n) A) scientific law. B) theory. C) experiment. D) hypothesis.

Q: A scientific law describes A) the scientific method. B) a fundamental relationship of nature. C) the behavior of nature. D) an experiment.

Q: A quantitative observation that is the basis of scientific investigation is a(n) A) experiment. B) measurement. C) explanation. D) number.

Q: Our senses may obtain less-than-accurate information concerning our physical world because they A) have limited sensitivity. B) have a limited range. C) are useless. D) can be deceived.

Q: The most information about our environment comes to us through the sense of A) smell. B) sight. C) hearing. D) touch.

Q: The word sciencecomes from the Latin word meaning A) "experiment." B) "investigate." C) "knowledge." D) "debate."

Q: Which of the following is notconsidered a major physical science: A) Physics B) Astronomy C) Geology D) Biology E) Meteorology

Q: In a debate, is the statement "It's only a theory" a valid argument point against a theory (as in "The theory of evolution is wrong because it's only a theory")? A) Yes, theories are weak. B) No, theories are strong. C) No, theories are weak. D) Yes, theories are meaningless.

Q: Historically, which measurement may have been defined as the distance from the royal nose to the thumb of the royal outstretched arm? A) 1 foot B) 1 yard C) 1 meter D) 1 kilometer

Q: A pint of water (on Earth) is approximately A) 1 pound. B) 1 gram. C) 1 kilogram. D) 1 quart.

Q: What does 6 1012times 3 10-9divided by 2 10-17equal?

Q: What does 4 10-12times 3 10-8divided by 2 1024equal?

Q: Write 0.000000846 in standard powers-of-10 notation.

Q: If there are 2.54 cm/in., how many inches are there per centimeter?

Q: Calculate the approximate number of seconds that a(n) 28-year-old student has lived.

Q: Calculate the product of 3.0 107and 1.6 109. Express the answer in standard powers-of-10 notation.

Q: Express 100 megadollars in standard powers-of-10 notation.

Q: Perform the operation of 157.98/0.498, and report the result with the proper number of significant figures in standard powers-of-10 notation.

Q: Dry air has a density of 1.29 kg/m3. What would be the volume of a metric ton of air?

Q: A cubic container 40 cm on a side is filled with water. What is the mass of the water?

Q: How long is a 10.0-ft pole in meters?

Q: A friend from Europe asks what the length of a 100-yd football field would be in meters. After doing the conversion, what would you tell her?

Q: A student's height is 180 cm. Determine that student's height in inches.

Q: If the decimal point is shifted to the right in a number expressed in powers-of-10 notation, the exponent, or power of 10, is ______________.

Q: If the decimal point is shifted to the left in a number expressed in powers-of-10 notation, the exponent, or power of 10, is ______________.

Q: For the multiplication of 8.704 m 3.14 m, the result should be reported with ______________ significant figures.

Q: In ratio form, the equivalence statement 1 mi = 1.61 km would be expressed as ______________.

Q: Which is larger, a liter or a quart?

Q: Which is longer, a meter or a yard?

Q: A liter has a volume of ______________ cubic centimeters.

Q: A(n) ______________ is a comparison of an unknown physical quantity with the standard unit.

Q: A combination of one or more fundamental units is called a(n) ______________ unit.

Q: A set value for a fundamental quantity is called a(n) ______________ unit.

Q: The unit of density in the mks system is ______________.

Q: One liter of pure water at its maximum density has a mass of 1 ______________.

Q: The standard unit of mass in the SI is the ______________.

Q: Liquid density may be measured with a(n) ______________.

Q: The ratio of mass to volume is known as ______________.

Q: Given that 1 L = 0.266 gal, the conversion factor for converting gallons to liters would be __________________.

Q: The British system is a(n) _____________ , or base-12 system.

Q: The metric system is a(n)____________ system.

Q: In the metric system, a penny might be called a(n) __________ dollar.

Q: There are 10 mm in a(n) ______________.

Q: A metric ton is ______________ kg.

Q: The meter is defined in terms of the speed of ______________.