Question 1

Why so much emphasis upon units? Why are units considered to be as important as the quantity, "magnitude", of something?

Accepted Answer

Just knowing the magnitude of something is not complete information (in fact it is ambiguous) unless one also knows the units. For example, learning that you will earn 150 for a certain task might mean 150 dollars, or perhaps 150 cents, or 150 pesos. The magnitude is almost worthless without the unit in which it is expressed.

Question 2

What distinguishes a derived unit from a base unit?

Accepted Answer

A derived unit can be expressed in terms of a combination of base units.

Question 3

List the seven base quantities in the SI system.

Accepted Answer

length, mass, time, electric current, temperature, amount of substance, luminous intensity

Question 4

List the seven base units in the SI system.

Accepted Answer

The answer of List the seven base units in the...

Question 5

What does the prefix mega- stand for?

Accepted Answer

The answer of What does the prefix mega- stand for?...

Question 6

What does the prefix micro- stand for?

Accepted Answer

The answer of What does the prefix micro- stand for?...

Question 7

What does the prefix kilo- stand for?

Accepted Answer

The answer of What does the prefix kilo- stand for?...

Question 8

What does the prefix milli- stand for?

Accepted Answer

The answer of What does the prefix milli- stand for?...

Question 9

What does the prefix centi- stand for?

Accepted Answer

The answer of What does the prefix centi- stand for?...

Question 10

Define and explain the meaning of DENSITY.

Accepted Answer

The answer of Define and explain the meaning of DENSITY....

Question 11

Determine the number of significant figures in 24.0 seconds.

Accepted Answer

The answer of Determine the number of significant figures in...

Question 12

Determine the number of significant figures in 0.055 cm.

Accepted Answer

The answer of Determine the number of significant figures in...

Question 13

Express 0.23 × 10² meters to three significant figures.

Accepted Answer

The answer of Express 0.23 × 10² meters to three...

Question 14

Determine the number of significant figures in 100.01 x 10³ meters.

Accepted Answer

The answer of Determine the number of significant figures in...

Question 15

Express 0.0015671 kg to three significant figures.

Accepted Answer

The answer of Express 0.0015671 kg to three significant figures....

Question 16

State the six general problem-solving steps given in the text.

Accepted Answer

The answer of State the six general problem-solving steps given...

Question 17

One metric ton is 2000 lb.

Accepted Answer

One metric ton is approximately 2204.62 pounds (lb).

Question 18

A 2-L bottle of soda gives you more for your money than a 2-qt bottle would, at the same price.

Accepted Answer

A 2-L bottle contains approximately 67.6 ounces of liquid, while a 2-quart bottle contains 64 ounces. Therefore, the 2-L bottle offers more volume for the same price.

Question 19

Zeros between non-zero numbers are significant.

Accepted Answer

Zeros between non-zero numbers are always considered significant because they contribute to the precision of the measurement.

Question 20

Zeros at the beginning of a number are significant.

Accepted Answer

Zeros at the beginning of a number are not considered significant; they serve only to locate the decimal point.

Quiz 1: Measurement and Problem Solving

Why so much emphasis upon units? Why are units considered to be as important as the quantity, "magnitude", of something?

What distinguishes a derived unit from a base unit?

List the seven base quantities in the SI system.

List the seven base units in the SI system.

What does the prefix mega- stand for?

What does the prefix micro- stand for?

What does the prefix kilo- stand for?

What does the prefix milli- stand for?

What does the prefix centi- stand for?

Define and explain the meaning of DENSITY.

Determine the number of significant figures in 24.0 seconds.

Determine the number of significant figures in 0.055 cm.

Express 0.23 × 102 meters to three significant figures.

Determine the number of significant figures in 100.01 x 103 meters.

Express 0.0015671 kg to three significant figures.

State the six general problem-solving steps given in the text.

One metric ton is 2000 lb.

A 2-L bottle of soda gives you more for your money than a 2-qt bottle would, at the same price.

Zeros between non-zero numbers are significant.

Zeros at the beginning of a number are significant.

Express 0.23 × 10² meters to three significant figures.

Determine the number of significant figures in 100.01 x 10³ meters.