What is Measurement? | RESEARCH I
Summary
TLDRThis educational video script introduces the fundamental science process skill of measurement, emphasizing its importance in collecting, comparing, and interpreting data. It explains the concepts of accuracy and precision, and highlights the metric system's role in scientific communication. The script provides an overview of various traditional measuring tools, including beakers, graduated cylinders, vernier calipers, micrometers, and balances, detailing their specific uses and levels of accuracy. It also mentions modern tools like the NDIR sensor for gas measurement, offering a comprehensive guide for future researchers and students in scientific investigation.
Takeaways
- 🔬 Measurement is a fundamental science process skill that is essential for collecting, comparing, and interpreting data in scientific research.
- 📏 The metric system is the standard for scientific measurements, helping students understand and communicate within the scientific world.
- 📐 Accuracy and precision are critical in measurements; accuracy refers to the closeness of a measurement to the true value, while precision means the exactness of the measurement.
- 🧪 Scientists and engineers use precise tools for measurements to ensure the quality of their work, similar to how architects use exact lengths for building structures.
- 📏 Tools like beakers, erlenmeyer flasks, and graduated cylinders are used for measuring the volume of substances in a laboratory.
- 🔬 Graduated cylinders offer a higher degree of accuracy than beakers and flasks, with precision within one percent.
- 🧪 Burets and pipettes are highly accurate glassware for measuring volumes, with burets being particularly precise within 0.01 ml.
- 📏 Tape measures, vernier calipers, and micrometer calipers are used for measuring length, width, and height with high precision.
- ⚖ Analytical balances, centigram balances, and triple beam balances are tools for measuring mass with varying levels of sensitivity and accuracy.
- 🌡️ Devices such as a geometer, pressure gauge, and NDIR sensors are used for measuring gas volumes and detecting carbon dioxide concentrations.
- 🔍 Choosing the appropriate measuring tool is crucial for obtaining precise and accurate measurements in scientific experiments.
Q & A
What is the second basic science process skill discussed in the script?
-The second basic science process skill discussed in the script is measurement.
Why is measurement important in the scientific process?
-Measurement is important in the scientific process because it helps in collecting, comparing, and interpreting data, allowing for classification and communication with others.
What does the script suggest should be used to help students understand the scientific world?
-The script suggests that the metric system should be used to help students understand the scientific world.
What is the difference between accuracy and precision in the context of measurement?
-Accuracy refers to the closeness of a measurement to the true value of what is being measured, while precision means the exact amount of measurement, indicating that it is neither more nor less, but exactly what it should be.
What are some examples of traditional tools used for measuring volume in scientific investigation?
-Examples of traditional tools used for measuring volume include beakers, Erlenmeyer flasks, graduated cylinders, burets, pipettes, and droppers.
Why are beakers and Erlenmeyer flasks not ideal for precise volume measurements?
-Beakers and Erlenmeyer flasks are not ideal for precise volume measurements because they offer crude readings and often do not have graduated markings on their sides, making them more suitable as containers for substances during experiments.
What is a graduated cylinder and how is its accuracy compared to beakers and flasks?
-A graduated cylinder is a tall, narrow vessel used for measuring the volume of liquids. Its degree of accuracy is marginally higher than that of beakers and flasks, typically within one percent.
What is a buret and how accurate is it in measuring volumes?
-A buret is a highly accurate glassware used for measuring volumes. It comes in different sizes, such as 10 ml, 50 ml, and 100 ml, with a precision within 0.01 ml.
What are some tools used for measuring length, width, and height in a laboratory?
-Some tools used for measuring length, width, and height in a laboratory include tape measures, vernier calipers, micrometer calipers, rulers, and meter sticks.
How does a micrometer caliper differ from a vernier caliper in terms of accuracy and use?
-A micrometer caliper integrates a calibrated screw and is commonly used for accurate component measurement in mechanical engineering and machining. It is more precise than a vernier caliper, which is a precision instrument used for measuring internal and external distances and reducing human estimation error.
What are some laboratory tools used for measuring mass, and how do they differ in sensitivity and use?
-Laboratory tools used for measuring mass include analytical balances, centigram balances, platform balances, and triple beam balances. Analytical balances are highly sensitive and can measure up to 10,000 or even 100,000 grams, while centigram balances weigh objects to 0.01 grams, platform balances are simple machines that do not require power, and triple beam balances are commonly used in school laboratories.
What is an audimeter and how is it used in a laboratory?
-An audimeter, also known as a gasometer, is a laboratory device that measures the change in volume of a gas mixture following a physical or chemical change.
What is the purpose of an NDIR sensor in a gaseous environment?
-An NDIR (Non-Dispersive Infrared) sensor is used to detect carbon dioxide in a gaseous environment by its characteristic absorption. It consists of an infrared source, a light tube, an interference or wavelength filter, and an infrared detector, and is often used for measuring carbon dioxide levels.
What is a carbon dioxide sensor module based on NDIR technology, and where is it commonly used?
-A carbon dioxide sensor module based on NDIR technology, such as the CM110-6S, can detect the concentration of carbon dioxide in indoor air with high accuracy and stability. It is commonly used in ventilation systems, air purifiers, air conditioners, and IAQ (Indoor Air Quality) monitors.
Outlines
🔬 Fundamentals of Scientific Measurement
This paragraph introduces the importance of accurate and precise measurement in scientific research, emphasizing that it is a fundamental component of good science. It explains the difference between accuracy and precision, with accuracy being the closeness to the true value and precision being the exact amount of measurement. The paragraph also discusses the metric system as a tool for understanding the scientific world and the necessity of using appropriate tools for measuring different properties of objects and events, such as length, area, volume, and weight.
📏 Exploring Traditional Measuring Tools
This section delves into the various traditional tools used for scientific measurements. It covers tools for measuring volume, such as beakers, erlenmeyer flasks, graduated cylinders, burets, pipettes, and droppers. The paragraph also discusses the limitations of these tools, explaining that certain tools are not interchangeable for different types of measurements. It then moves on to tools for measuring length, including tape measures, vernier calipers, micrometer calipers, rulers, and meter sticks, highlighting their specific uses and advantages in different scenarios.
⚖️ Advanced Tools for Mass and Gas Measurement
The final paragraph focuses on advanced laboratory tools for measuring mass and gas. It describes analytical balances, centigram balances, platform balances, and triple beam balances, each with their unique sensitivity and accuracy levels suitable for different measurement needs. The paragraph also introduces tools for gas measurement, such as the audimeter for volume changes, pressure gauges for fluid conditions, and NDIR sensors for detecting carbon dioxide. The summary concludes with the mention of a carbon dioxide sensor module, emphasizing its high accuracy and stability for indoor air quality monitoring.
Mindmap
Keywords
💡Measurement
💡Precision
💡Accuracy
💡Metric System
💡Beaker
💡Graduated Cylinder
💡Buret
💡Pipette
💡Dropper
💡Tape Measure
💡Micrometer Caliper
💡Analytical Balance
💡Platform Balance
💡Triple Beam Balance
💡Geometer
💡NDiR Sensor
Highlights
Importance of accurate and precise measurement in scientific processes and its role in data collection, comparison, and interpretation.
Introduction to the second basic science process skill: Measurement.
Explanation of the metric system and its use in scientific education.
Measurement as a critical component in conducting experiments and its significance in quantitative data.
Definition and distinction between accuracy and precision in measurements.
Direct and indirect comparison methods in measuring the properties of objects and events.
Development of skills such as ordering properties and comparing quantities using standard units.
Importance of selecting appropriate tools for precise and accurate measurements in scientific investigation.
Different types of measuring tools for volume, including beakers, erlenmeyer flasks, graduated cylinders, burets, pipettes, and droppers.
Use of tape measures, vernier calipers, micrometer calipers, rulers, and meter sticks for measuring length, width, and height.
Role of analytical balances, centigram balances, platform balances, and triple beam balances in measuring mass.
Introduction to laboratory tools for measuring gas, including the audimeter, pressure gauge, and NDIR sensors.
Explanation of the NDIR technology and its application in detecting carbon dioxide concentration.
Description of the carbon dioxide sensor module CM110-6S for indoor air quality monitoring.
Upcoming discussion on the differences between micrometer calipers and vernier calipers in the next vlog.
Encouragement for viewers to subscribe, like, and hit the notification bell for more research updates.
Transcripts
[Music]
scientists never just grab
a handful of chemicals and then toss
them together
architects and engineers never just grab
a certain length of object just to make
or just to build houses and buildings
accurate precise measurement is a
fundamental component of a good science
magandang aro future researchers this is
me again featured in me
i'm kasama mo at gaga bay say yo yo
blizzard's journey
welcome back to our youtube channel
don't forget to subscribe
like and hit the notification bell for
more updates in our subject in
research we are now in our week 3 module
t in research
1. last time we discuss about the most
fundamental
basic process skill which is observation
from that last one
you were able to explain the importance
of observation
based on the empirical nature of science
and you were able
to demonstrate the skills in observing
in a given
event or object this lesson you should
be able to use the most appropriate
tools in measuring objects
in this lesson vlog we're going to talk
about the traditional
tools in measuring and inducing in
scientific
investigation but before that let us
define first
the second basic science process skill
which is
measurement do you have any idea what
measurement
is what is measurement measuring is
important in collecting
comparing and interpreting data
it helps us classify and communicate
with others and always remember that we
have the metric system which is the
metric system
should be used to help students
understand
the scientific world
[Music]
measuring is critical in the collection
comparison and analysis of data
it allows us to identify and interact
with others
the metric system should be used to help
understand the world of science
measuring is one of the science basic
process skills essential in doing an
experiment
and it is considered as quantitative
data
[Music]
scientists never just grab a handful of
chemicals and then
toss them together architects and
engineers
never just grab a certain length of
object
just to make or just to build houses and
buildings accurate precise measurement
is a fundamental component
of a good science accurate precise
measurement is a fundamental component
of a good science
we have these two term precise and
accuracy which
we're going to use in this lesson in
measurement
when we say accuracy it means this is
the closeness of measurement to the true
value
of what is being measured but when we
say precise
it means that this is the exact
amount of measurement meaning to say
when we say precise
it is neither more or less
but exactly
[Music]
measuring the properties of objects and
events may be accomplished by direct
comparison
or by indirect comparison with arbitrary
unions
which may be standardized for
communication purposes
by doing such a measurement learners may
be able to develop skills such as
order properties of objects
by means of measuring devices without
regard
to quantitative units compare the
quantities
of arbitrary units such as length
area volume
and weight another thing is
use standard units for measurements
select one system of units for all
related measurements
identify measurable physical quantities
and convert from one system units to
another
[Music]
in doing such experiment it is very
important
that we know what appropriate tools
should be used
in measuring it is very important for us
to have a precise
and accurate measurement there is
appropriate laboratory equipment for
every measurement
just like the beaker we use beaker to
measure the volume
of a certain substance but we cannot use
the beaker to measure the length of a
certain object
we also have the ruler to measure the
length of a certain object but we cannot
use the ruler
to measure the volume of a certain
substance
we also have the triple beam balance to
measure the weight of a certain solid
material
on solid object but we cannot use the
triple beam balance
just to measure the volume of your milk
[Music]
now let us have measuring tools
for measuring the volume
we have beakers and erlenmeyer flask
beakers and erlenmeyer flask the vessels
on this list may be bigger than others
but they offer nothing but crude
readings in addition
beakers and flasks often do not even
have markings graduated on their sides
therefore they are only used as
containers only so as you can see
we can use this as container and storage
of
substances during experiment
we also have graduated cylinder
[Music]
graduated cylinder these are tall narrow
vessels
a graduated cylinder's degree of
accuracy is marginally higher than the
beakers and flask
within one percent they weigh liquids
next we have the buret bireth is one of
the most
accurate glassware for measuring volumes
it is highly accurate this type of
volumetric flask or glassware
is found in three different sizes it can
be 10
ml 50ml and 100 ml
their precision is within 0.01
ml we also have the pipette
pipette is a kind of volumetric
glassware that is designed
as very long and narrow glass tubes
the level of its accuracy is highly
accurate
their accuracy depends in part of their
height
which is between 12 to 24 inches in
length
the pipette graduations that measure
liquids within a range of
0.02 ml
next we also have the dropper dropper is
a device
used to transfer small quantities of
liquids
sometimes it is also known as the
pasture pipette
also known as the dropper okay and they
are used in a laboratory and also to
dispense small amounts of liquid
medicines
a very common use was to dispense eye
drops into the eye
so this is the dropper
now let's proceed with uh
laboratory tools for measuring the
length
width and height number one we have the
tape measure
tape measure is flexible ruler
used to measure size or distance
a tape measure or measuring tape is
consists of a ribbon of cloth
plastic fiberglass or metal strip with
linear measurement markings
it is also common measuring tool
this is the tape measure next we also
have this vernier caliper
a vernier caliper is a precision
instrument
that is highly accurate in measuring
internal and external distances
it is a measuring device used to
precisely measure linear dimensions
it is very useful tool to use when
measuring the diameter of round objects
like cylinders
and used to reduce human estimation
error next we also have this micrometer
caliper
a micrometer caliper is a tool that
integrates a calibrated screw
commonly used for accurate component
measurement in mechanical engineering
and machining
as well as most mechanical trades along
with other metrological instruments such
as dial
vernier and automated calipers so this
is a micrometer caliper
we also have the ruler ruler is a device
used in geometry and technical drawing
as well as engineering and construction
industries
to measure distances or draw straight
lines
so this is very common the most common
instrument that can be used in measuring
the length or weed
of a certain object next is the meter
stick a meter stick is either a straight
edge
or foldable ruler used to measure length
and is commonly especially common in the
construction
industry so this is a meter stick which
uh usually have the length of one meter
next let's now proceed with um
laboratory tools for measuring the mass
we have the analytical balance
analytical balance is common piece of
scientific laboratory equipment
this is highly sensitive instruments
that can measure
up to 10 000 or even
100 thousands of gram
[Music]
meaning to say this is very accurate
next we have the centigram balance a
centigram balance
uh somehow look like the analytical
balance
but when we say centigram balance it is
this is a metric unit equal to one tenth
of a gram
the scale will weigh objects to 0.01
grams at the nearest
it increases effectiveness when
calculating an object's
weight next we also have
the platform balance a platform balance
has two platforms balanced on or
suspended from cross arm and weights
are placed on one platform before the
item is weighted in the balance
platform balances are simple machines
and they are convenient because they do
not require any power to work
next we also have the triple beam
balance a triple beam balance is a kind
of scale that uses counter weights to
counterbalance
the sample in the pan on a three rider
beam
this is a triple beam balance and this
is commonly used in
school laboratory
now let's proceed with laboratory tools
for measuring gas
so actually there are lots of measuring
tools that can measure the gas
but let us have this this is what we
call the
a geometer so geometer is a laboratory
device that measures the change in
volume
of a gas mixture following a physical or
chemical change
so this is the audimeter
next we also have this pressure gouge
it is an instrument for measuring the
condition of a fluid
liquid or gas that is specified by the
force
that the fluid would exert when at rest
on a unit area such as pounds per square
inch
or newtons per square centimeter
[Music]
and we also have this one are you
familiar with this this is what we call
the
ndir or
ndir sensors or the non-dispersive
infrared carbon dioxide sensors
so what is this
this ndir sensors are spectroscopic
sensors to detect carbon dioxide in a
gaseous environment
by its characteristic absorption
the key components are an infrared
source
a light tube an interference or
wavelength filter
and an infrared detector the gas is
pumped or diffuses
into the light tube and then the
electronics measure
the absorption of the characteristic
wavelength of light
ndir sensors are most often used for
measuring the carbon dioxide
[Music]
next we have the carbon dioxide sensor
or the cm110
6s it is a single beam ndir
carbon dioxide sensor module based on
non-dispersive
infrared or the ndir technology which
can detect
carbon dioxide concentration of indoor
air so with high accuracy high stability
small size and it is widely used for
ventilation system air purifier air
conditioner
iaq monitor and et cetera
discussion about the traditional
measuring tools stay tuned in our
channel because in our next lesson vlog
we're going to discuss about the
difference between
micrometer caliper and a vernier caliper
don't forget to subscribe like and hit
the notification bell for
more updates in research again this is
titrating may
and see you on our next vlog bye
[Music]
um
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