Chapter 2

Question 1

Giga

Answer 1

• G

- 10 to the power of 9

Question 2

Mega

Answer 2

• M

- 10 power to the 6

Question 3

Kilo

Answer 3

• K

- 10 power to the 3

Question 4

Deci

Answer 4

• d

- 10 to the power of -1

Question 5

Centi

Answer 5

• c

- 10 to the power of -2

Question 6

Milli

Answer 6

• m

- 10 power of -6

Question 7

Micro

Answer 7

• M

- 10 to the power of -6

Question 8

Nano

Answer 8

• n

- 10 to the power of -9

Question 9

Pico

Answer 9

• p

- 10 to the power of -12

Question 10

Kelvin (k)

Answer 10

The SI unit for temp.

Question 11

Derived unit

Answer 11

A unit that is defined by a combination of base units

Question 12

Density

Answer 12

Physical property of mystery and is defined as the amount of mass per unit volume

Question 13

Base unit of time

Answer 13

Seconds

Question 14

Base unit of length

Answer 14

Meter

Question 15

Base unit of mass

Answer 15

Kilogram

Question 16

Base unit of temp.

Answer 16

Kelvin

Question 17

Base unit of amount of a substance

Answer 17

Mole

Question 18

Base unit for electric current

Answer 18

Ampere

Question 19

Base unit for luminous intensity

Answer 19

Candela

Question 20

Cesium

Answer 20

Based clocks are used when highly accurate time keeping is required

Question 21

How many pounds are in a kilogram

Answer 21

2.2

Question 22

In Celsius what is waters freezing boiling point

Answer 22

0 and 100

Question 23

In kelvin what is waters freezing boiling points

Answer 23

273.15 and 373.15

Question 24

Dimensional analysis

Answer 24

A systematic approach to problem solving that uses conversion factors to move or convert from one unit to another

Question 25

Conversion factor

Answer 25

A ration of equivalent valued having different units

Question 26

Accuracy

Answer 26

How close a measured value is to an accepted value

Question 27

Error

Answer 27

Defined as the difference between an experimental value and an accepted value.

Question 28

Precision

Answer 28

How close a series of measurements are to one another

Question 29

Error equation

Answer 29

Error = experimental value - accepted value

Question 30

Percent error

Answer 30

Express error as a percentage of the accepted value

Question 31

Percent error equation

Answer 31

Percent error = error/!accepted value * 100

Question 32

Tolerances

Answer 32

Are a narrow range of allowable dimensions based on an acceptable amount of error

Question 33

Significant figs

Answer 33

Include all know digits plus one estimated digit

Question 34

Interpolation

Answer 34

Allows you to read the value from any point that falls between the recorded data points

Question 35

Extrapolation

Answer 35

Extending a line beyond the plotted points in order to estimate cause for the variables

Question 36

Base unit

Answer 36

• A divined unit in a system of measure to that is based on object or event in the physical world
• 7 base units