Question 1

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

Accepted Answer

When something cannot be directly observed, a model can be used to represent it. A model is a simplified representation of a complex system or phenomenon, which can be used to make predictions or understand patterns in data. A hypothesis is an explanation or prediction based on limited evidence, and a theory is a well-supported and widely accepted scientific explanation for a phenomena. A graph is a visual representation of data, but it does not necessarily represent something that cannot be directly observed.

Question 2

The property of mass is a measure of how heavy an object is.

Accepted Answer

Mass is a measure of the amount of matter in an object, not directly how heavy it is. Weight, on the other hand, measures how the force of gravity acts upon that mass.

Question 3

A controlled experiment has all variables held constant.

Accepted Answer

A controlled experiment only has the independent variable manipulated, while all other variables are kept constant.

Question 4

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

Accepted Answer

Equations can be used for all of the above given reasons. They can describe a property, define a concept, and describe how quantities change together.

Question 5

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.

Accepted Answer

Claims that appear to be pseudoscience should be tested experimentally in order to determine whether they are valid. Accepting claims without testing them or relying on the news media can lead to the spread of misinformation and falsehoods. It is important to use scientific methods and critical thinking to evaluate claims before accepting them as true.

Question 6

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

Accepted Answer

A theory is more than just a hypothesis that has been shown to be correct by many experiments. A theory is a well-substantiated explanation of natural phenomena that has been repeatedly confirmed through observation and experimentation. It is a more comprehensive and established explanation than a hypothesis.

Question 7

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

Accepted Answer

Since the density of iron is constant, the mass and volume of iron pieces are directly proportional. Therefore, if one piece has twice the mass, it must also have twice the volume. Thus, a 100-g piece of iron has twice the volume as a 50-g piece of iron.

Question 8

Measurement information used to describe something is called data.

Accepted Answer

Data is defined as any collection of information that is used to describe or measure something.

Question 9

The density of a 100-g piece of iron is twice as great as the density of a 50-g piece of iron.

Accepted Answer

The density of a material, such as iron, is an intrinsic property that does not depend on the amount of the material. Therefore, the density of iron remains constant regardless of the mass of the iron piece.

Question 10

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

Accepted Answer

A liter is closest in size to a quart, with 1 liter being approximately equal to 1.06 quarts.

Question 11

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

Accepted Answer

The SI unit for volume is cubic meter (m³). While liter is commonly used to measure volume, it is not an SI unit.

Question 12

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

Accepted Answer

This is the correct definition of a referent.

Question 13

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

Accepted Answer

The symbol µ is used to denote proportionality, which means "is proportional to."

Question 14

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.

Accepted Answer

A controlled experiment involves re-creating an event by comparing two situations in which all the factors are identical except one. This allows researchers to isolate the effect of the variable being tested. A tentative experiment is not a commonly used term in scientific experiments. A cause and effect demonstration is a broader concept and does not necessarily involve comparing two identical situations. A statistical test of truth involves analyzing data to determine the significance of results, but does not necessarily involve creating two identical situations.

Question 15

The mass of 1000 cm³of water is a kilogram.

Accepted Answer

1 cubic centimeter (cm^3) of water has a mass of 1 gram, so 1000 cm^3 (or 1 liter) of water has a mass of 1000 grams, which is equal to 1 kilogram.

Question 16

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.

Accepted Answer

Volume is the measure of the amount of space an object occupies. It is measured in cubic units (e.g. cubic meters, cubic feet, etc.). It is not related to the amount or density of matter in the object, nor is it a measure of the surface area.

Question 17

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.

Accepted Answer

"k" is the proportionality constant in the equation V = tk, which relates the volume of a gas tank (V) to the time required to fill it (t). It represents the rate at which the tank is being filled and has units of gallons per minute (gal/min). It is a fixed value that is determined by the size of the tank and the rate at which it can be filled. Therefore, it is not a variable and does not depend on the length of time.

Question 18

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

Accepted Answer

When a cube of Jell-o is cut into two pieces, the total surface area increases because new surfaces are created by the cut. The mass, volume, and density of the Jell-o remain unchanged because these properties are intrinsic to the material itself and are not affected by dividing it into smaller pieces.

Question 19

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

Accepted Answer

The symbol "∆" is often used in mathematics and science to denote a change, but it is not specifically used to refer to an object's density. The symbol commonly used to represent density is "ρ" (rho).

Question 20

In the equation A = $\pi$r², $\pi$ (pi) is a A)manipulated variable. B)responding variable. C)numerical constant. D)constant that depends on the size of the circle.

Accepted Answer

π is a numerical constant, specifically the mathematical constant pi, which represents the ratio of a circle's circumference to its diameter, and has a fixed value of approximately 3.14159... It is not a manipulated variable or a responding variable, and it does not depend on the size of the circle in this equation.

Quiz 1: What Is Science

When something cannot be directly observed, it can be represented by a

The property of mass is a measure of how heavy an object is.

A controlled experiment has all variables held constant.

Equations are used to

Claims that appear to be pseudoscience should be

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

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

Measurement information used to describe something is called data.

The density of a 100-g piece of iron is twice as great as the density of a 50-g piece of iron.

The English unit of volume closest in size to a liter is

Which of the following is not a SI unit of the property it measures?

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

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

The re-creation of an event by comparing two situations in which all the factors are identical except one is called a

The mass of 1000 cm³of water is a kilogram.

The property of volume is a measure of

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"

If a cube of Jell-o is cut into two pieces, what total property of the new pieces change?

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

In the equation A = $\pi$ r², $\pi$ (pi) is a

Quiz 1: What Is Science

When something cannot be directly observed, it can be represented by a

The property of mass is a measure of how heavy an object is.

A controlled experiment has all variables held constant.

Equations are used to

Claims that appear to be pseudoscience should be

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

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

Measurement information used to describe something is called data.

The density of a 100-g piece of iron is twice as great as the density of a 50-g piece of iron.

The English unit of volume closest in size to a liter is

Which of the following is not a SI unit of the property it measures?

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

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

The re-creation of an event by comparing two situations in which all the factors are identical except one is called a

The mass of 1000 cm3 of water is a kilogram.

The property of volume is a measure of

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"

If a cube of Jell-o is cut into two pieces, what total property of the new pieces change?

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

In the equation A = π\piπ r2, π\piπ (pi) is a

The mass of 1000 cm³of water is a kilogram.

In the equation A = $\pi$ r², $\pi$ (pi) is a