1 - Scientific Measurement

Question 1

A quantitative comparison of an object’s physical quantity that involves a number and a unit

Answer 1

Measurement

Question 2

Magnitude of physical quantity

Answer 2

unit

Question 3

scoop

Answer 3

salok

Question 4

Jar

• for wine
• for water

Answer 4

Gusi

Tapayan

Question 5

Breadth of a finger

Answer 5

Dali

Question 6

Length of a forefinger

Answer 6

Timuro

Question 7

When was the SI created?

Answer 7

1960

Question 8

Unit of

1. Mass
2. Electric Current
3. Temperature
4. Time
5. Amount of substance
6. Length
7. Luminous intensity

Answer 8

1. Kilograms
2. Ampere
3. Kelvin
4. Seconds
5. Mole
6. Meters
7. Candela

Question 9

0

• 1
• 2
• 3
• 6
• 9
• 12
• 15
• 18
• 21
• 24

Answer 9

Base
Deci (d)
Centi (c)
Milli (m)
Micro (u)
Nano (n)
Pico (p)
Femto (f)
Atto (a)
Zepto (z)
Yocto (y)

Question 10

0
1
2
3
6
9
12
15
18
21
24

Answer 10

Base
Deka/deca (da)
Hector (h)
Kilo (k)
Mega (M)
Giga (G)
Tera (T)
Peta (T)
Exa (E)
Zeta (Z)
Yotta (Y)

Question 11

0
1
2
3
6
9
12
15
18
21
24

Answer 11

1
1 tenth
1 thousandth
1 millionth
1 billionth
1 trillionth
1 quadrillionth
1 quintillionth
1 sextillionth
1 septillionth

Question 12

mass ÷ volume

Answer 12

density

Question 13

no. of mols of solute
÷
Liters of solution

Answer 13

Molarity

Question 14

no. of mols of solute
÷
kgs of solvent

Answer 14

Molality

Question 15

product of 3 dimensions of length (L×W×H)

Answer 15

Volume

Question 16

Product of mass and acceleration

Answer 16

force

Question 17

Product of two dimensions of length (L×W)

Answer 17

Area

Question 18

Ratio of force and area

Answer 18

Pressure

Question 19

Uncertainties in measurement are caused by:

Answer 19

1. measuring instrument
2. external factors (temp, pressure, location)
3. skills of the person doing the measurements

Question 20

The dgree degree of conformity of a test result to the true or accepted value

Answer 20

Accuracy

Question 21

The quotient of the summation of all the data and the number of data involved

Answer 21

Mean

Question 22

The closer the mean to the accepted value, the _________ is the accuracy of the data

Answer 22

higher

Question 23

Absolute value of difference between the theoretical and expermental value

Answer 23

Error

Question 24

Formula for error

Answer 24

E = (Theoretical value - expermental value)
————————————————————× 100
Theoretical value

Question 25

consistency of achieving the same results repeatedly

Answer 25

Precision

Question 26

describes how spread out the data are

Answer 26

standard deviation

Question 27

Low SD = _________ precision

Answer 27

high

Question 28

Formula for sd

Answer 28

√(x-mean)² ------------- n-1

Question 29

Simplified expression for very small or very large values

Answer 29

scientific notation

Question 30

Parts of standard form

Answer 30

1. Multiplying factor (A) {1-9.9} 2. base 10 3. exponent (B)

Question 31

Digits that are considered in measurement taken

Answer 31

significant figures

Question 32

Addition/Subtraction

Answer 32

Decimal point

Question 33

Multiplication/Division

Answer 33

Significant figures

Question 34

Temperature dependent physical quantity that is specific to purr substances

Answer 34

Density