Topic 1

Question 1

What is the base unit for length?

Answer 1

meter

Question 2

What is the symbol for meter?

Answer 2

m

Question 3

What is the base quantity of a meter?

Answer 3

length

Question 4

What is the base unit for mass?

Answer 4

kilogram

Question 5

What is the symbol for a kilogram?

Answer 5

kg

Question 6

What is the base quantity for a kilogram?

Answer 6

mass

Question 7

What is the base unit for time?

Answer 7

second

Question 8

What is the symbol for a second?

Answer 8

s

Question 9

What is the base quantity for a second?

Answer 9

time

Question 10

What is the base unit for a current?

Answer 10

ampere

Question 11

What is the symbol for an ampere?

Answer 11

A

Question 12

What is the base quantity for an ampere?

Answer 12

current

Question 13

What is the base unit for temperature?

Answer 13

Kelvin

Question 14

What is the symbol for Kelvin?

Answer 14

K

Question 15

What is the base quantity for Kelvin?

Answer 15

temperature

Question 16

What is the base unit of an amount of substance?

Answer 16

mole

Question 17

What is the symbol for mole?

Answer 17

mol

Question 18

What is the base quantity for a mole?

Answer 18

Amount of substance

Question 19

What are derived units?

Answer 19

units that are made up out of base units

Question 20

What are units that are made up out of base units?

Answer 20

derived units

Question 21

What is precision?

Answer 21

how well repeated measurements of a value agree with one another (exact)

Question 22

What is how well repeated measurements of a value agree with one another (exact)?

Answer 22

precision

Question 23

What is accuracy?

Answer 23

how well a measurement agrees with the true value (correct)

Question 24

What is how well a measurement agrees with the true value (correct)?

Answer 24

accuracy

Question 25

When using an analog scale, what is the uncertainty?

Answer 25

plus or minus half the smallest scale division

Question 26

On what scale is it when the uncertainty is plus or minus half the smallest scale division?

Answer 26

analog scale

Question 27

When using a digital scale, what is the uncertainty?

Answer 27

plus or minus the smallest unit shown

Question 28

On what scale is it when the uncertainty is plus or minus the smallest unit shown?

Answer 28

digital scale

Question 29

When taking repeated measurement how do you find the uncertainty?

Answer 29

range/2

Question 30

When multiplying or dividing quantities, how do you find the resultant uncertainty?

Answer 30

add the percentage/fractional uncertainties of the quantities that we are multiplying

Question 31

When adding or subtracting quantities, how do you find the resultant uncertainty?

Answer 31

add the absolute uncertainties of the quantities we are measuring _∆a_ = _∆b_ + _∆c_ a b c

Question 32

Is velocity a vector?

Answer 32

Yes

Question 33

Is acceleration a vector?

Answer 33

Yes

Question 34

What is a scalar quantity?

Answer 34

magnitude only can be described by a number with units

Question 35

What is a vector quantity?

Answer 35

magnitude and direction must be described by a number (its magnitude) and its direction