Ch.1 – Flashcards

the property of mass is a measure of how heavy an object is. true or false

A referent is a familiar object one can use to describe the property of an object. True or False

Measurement information used to describe something is called data. True or False

A 100-g piece of iron has twice the volume as a 50-g piece of iron. True or False

The mass of 1000 cm3 of water is a kilogram. True or Flase

The density of a 100-g piece of iron is twice as great as the density of a 50-g piece of iron, True or False

A controlled experiment has all variables held constant. True or False

The symbol µ has the meaning of "is proportional to". True or False

A theory is a hypothesis that has been shown to be correct by many experiments. True or False

The symbol "∆" is used to refer to an object's density. True or False

Equations are used to A.describe a property. B.define a concept. C.describe how quantities change together. D.All of the above

Which of the following is not a SI unit of the property it measures? A.length - meter B.volume - liter C.time - second D.mass - kilogram

In the text, the equation V =tk is used to describe the relationship between the volume of a gas tank and the time required to fill it. The symbol "k " A.has units of min/gal. B.is a variable. C.is the proportionality constant. D.depends on the length of time

The English unit of volume closest in size to a liter is A.gallon. B.ounce. C.quart. D.cup

If a cube of Jell-o is cut into two pieces, what total property of the new pieces change? A.mass B.volume C.density D.surface area

When something cannot be directly observed, it can be represented by a A.hypothesis. B.graph. C.model. D.theory

Claims that appear to be pseudoscience should be A.accepted if it is said to have scientific validity. B.tested experimentally. C.accepted if promoted by news media. D.All of the above

The property of volume is a measure of A.how much matter the object contains. B.the compactness of matter in a given space. C.the extent of the surface of the object. D.how much space the object occupies.

In the equation A=r 2, (pi) is a A.manipulated variable. B.responding variable. C.numerical constant. D.constant that depends on the size of the circle

The re-creation of an event by comparing two situations in which all the factors are identical except one is called a A.tentative experiment. B.cause and effect demonstration. C.statistical test of truth. D.controlled experiment

A tentative scientific explanation which may or may not be rejected upon further experimentation is called a A.theory. B.hypothesis. C.model. D.principle.

A statement describing a relationship that is observed in nature to occur consistently time after time is a(an) A.hypothesis. B.scientific law. C.scientific theory. D.mode

Imagine a 10-g chunk of aluminum (r = 2.7 g/cm3) and a 10-g chunk of iron (r = 7.9 g/cm3). Which of the following is true? A.The chunk of iron is smaller than the chunk of aluminum. B.The chunk of iron is more massive than the chunk of aluminum. C.The chunk of aluminum is smaller than the chunk of iron. D.Both objects have the same volume.

A cube that measures 2 cm on each side has a surface area to volume ratio of A.1/2. B.2. C.3. D.6

A scheme of thought that has survived a test of detailed examination for long periods of time is a (an) A.hypothesis. B.scientific law. C.scientific theory. D.model

The most recently developed scientific theory is the A.plate tectonic theory. B.atomic theory. C.theory about the nature of light. D.theory of evolution.

One of the basic differences between science and a pseudoscience is the lack of A.data. B.valid and reliable experimental studies. C.testable hypotheses. D.theories

A tentative thought- or experiment-derived explanation is known as a (an) A.hypothesis. B.scientific law. C.scientific theory. D.model

An event with two situations with all the influencing factors identical except one is a (an) A.hypothetical experiment. B.experiment. C.controlled experiment. D.impossible experiment

An experimental situation used as the basis of comparison is the A.control group. B.experimental group .C.hypothetical group. D.group of variables where changes will occur