Measurements

Question 1

An important part of most experiments involves the determination (often, the
estimation) of quantity, volume, dimensions, capacity, or extent of something –
these determinations are

Answer 1

Measurments

Question 2

Scale is used to determine a value

Answer 2

Estimations rather than exact determinations need to be made

Question 3

Measurement came from the Greek word _____ that means limited proportion

Answer 3

Metron

Question 4

1960 the metric system was revised, simplified and named ________ or _____

Answer 4

Systeme International D’Unites ( International System of Units or SI System ( meters , kilograms and etc)

Question 5

Major engineering blunders were the result of a faulty measurements.

Answer 5

The Mars Climate Orbiter missed the planet and was lost due to the engineers using
two different systems of measurement.

The Great Kersten Blunder (Kersten being the programmer who screwed up) was the
loss of a multi-billion dollar space probe headed towards Venus because of the
milometer to inch conversion program that Kersten put on the probe.

Question 6

Missed the planet and was lost due to the engineers using
two different systems of measurement.

Answer 6

Mars Climate Orbiter

Question 7

Kersten being the programmer who screwed up was the
loss of a multi-billion dollar space probe headed towards Venus because of the
milometer to inch conversion program that Kersten put on the probe.

Answer 7

Great Kersten Blunder

Question 8

Physical Quantities

Answer 8

Quantitative - most observation in physics
Qualitative - usually imprecise

Question 9

Physical Quantities( two types)

Answer 9

Base - the brick the basic building block of a house.
Derived - house that was build up from a collection of bricks( basic quantity)

Question 10

A scientific measurement requires:

Answer 10

(1) the definition of the physical quantity
(2) the units.

Question 11

Actually the product of a number and a unit .

Answer 11

value of a physical quantity

Question 12

precision of the measurement result is
determined by

Answer 12

procedures used to measure them.

Question 13

internationally accepted system
of units for measurement in all of the sciences, including physics.

Answer 13

The SI, or metric system of units

Question 14

The SI consists of base units and derived units:

Answer 14

(1) The set of base units comprises an irreducible set of units for
measuring all physical variables
(2) The derived units can be expressed in terms of the base units

Question 15

Our “How far?” question involves being
able to measure the distance between two points.

Answer 15

Length

Question 16

To answer the question, “How long
did it take?”

Answer 16

Time

Question 17

A measure of “amount of
stuff.”

Answer 17

Mass