Moore 1.3 The International System Of Units (SI)

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Moore section 1.3 reading check questions

• 1.

1 dm is equivalent to

• A.

0.1 m

• B.

0.1 cm

• C.

0.1 km

• D.

0.1 mm

A. 0.1 m
Explanation
1 dm is equivalent to 0.1 m because the prefix "deci" means one-tenth. Therefore, 1 dm is equal to one-tenth of a meter, which is 0.1 m.

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• 2.

1 dm^3 measures

• A.

Length

• B.

Surface area

• C.

Volume

• D.

Density

C. Volume
Explanation
The correct answer is volume because 1 dm^3 is a unit of measurement for volume. It represents the amount of space occupied by an object or substance.

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• 3.

1 dm^3 is equivalent to

• A.

0.001 cm^3

• B.

0.001 m^3

• C.

0.001 km^3

• D.

0.001 mm^3

B. 0.001 m^3
Explanation
1 dm^3 is equivalent to 0.001 m^3 because there are 10 decimeters in a meter. Therefore, if we have 1 cubic decimeter (dm^3), we can convert it to cubic meters (m^3) by dividing by 10. This gives us 0.1 m^3. Since the question asks for the equivalent in m^3, the correct answer is 0.001 m^3, which is the same as 1 dm^3.

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• 4.

Greek symbol used for density is

• A.

υ

• B.

π

• C.

ρ

• D.

θ

C. ρ
Explanation
The Greek symbol used for density is ρ.

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• 5.

Which of the following is the unit for density?

• A.

G/cm^3

• B.

Kg

• C.

ML/kg

• D.

M/s

A. G/cm^3
Explanation
The unit for density is g/cm^3 because density is defined as mass per unit volume. In this unit, grams (g) represent the mass and cubic centimeters (cm^3) represent the volume. This unit is commonly used for measuring the density of solids and liquids.

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• 6.

Unlike mass or volume, the density of a substance is (                     ) of the size of the sample

independent
Explanation
The density of a substance is independent of the size of the sample. This means that no matter how much or how little of the substance is present, its density will remain the same. Density is a physical property that is determined by the mass of the substance divided by its volume. Since both mass and volume are extensive properties that depend on the amount of substance present, the size of the sample does not affect the density.

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• Current Version
• Mar 21, 2023
Quiz Edited by
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• Feb 06, 2009
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