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Natural sciences

Matter, measuring and reactions

Educator section

Memorandum

3. Volume of stone:

Scientific formula

  • You cannot use a formula, because the stone does not have the same length or width in all places.

Water displacement

Take a first reading of the water in the measuring-cylinder. Then bind thread around the stone and lower it into the water-filled cylinder. Wait for all the air bubbles to escape and take the second reading. Subtract the first reading from the second to determine the volume of the stone.

Leaner section

Content

Activity: to measure the volume of bodies consisting of solid matter [lo 1.2]

The examples that follow will help you to understand how volumes of solid bodies are measured.

(We use objects that can be fitted into the measuring cylinder):

A cube is a solid that has six square plane faces. The angle between two adjacent angles is a right angle. V = ℓ3

A triangular prism is a five-sided (polygonal) solid with identical triangular end planes and three rectangular plane faces perpendicular to the end planes.

V = ½bhH

A rectangular prism is a six-sided (hexagonal) solid that has two identical rectangular end planes and four side planes perpendicular to the end planes.

V = ℓbh

A cube is a solid that has six square plane faces. The angle between two adjacent angles is a right angle.V = ℓ3 A triangular prism is a five-sided (polygonal) solid with identical triangular end planes and three rectangular plane faces perpendicular to the end planes.V = ½bhH A rectangular prism is a six-sided (hexagonal) solid that has two identical rectangular end planes and four side planes perpendicular to the end planes.V = ℓbh

There are two methods for measuring the volume of the above objects:

  • Measuring volume by applying a scientific formula;
  • Calculating volume by means of the technique of water displacement.

The water displacement technique operates as follows:

The measuring cylinder is filled with water to the halfway mark. This halfway mark is your first reading of the water level. Now carefully lower the object of which the volume must be measured into the measuring cylinder.

Tap the side of the measuring cylinder to ensure that all air bubbles escape.

Take a reading of the new water level. Deduct the first reading from the second to determine the volume of the object.

1. Now use both these methods to determine the volumes of the given objects:

Object Volume as calculated Volume: Water displacement
Metal cube
Rectangular glass brick
Prism

6 x ½ = (3)

2. Was there any difference between the results obtained by the different methods?

_____________________________________________________________________

(1)

How do you explain the difference, if any, that you observe?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

(2)

3. Explain how you would determine the volume of a stone such as the one illustrated below?

  • When using a scientific formula:

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

(2)

  • When measuring by means of water displacement:

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

(2)

Assessment

Learning Outcome 1: The learner will be able to act confidently on curiosity about natural phenomena, and to investigate relationships and solve problems in scientific, technological and environmental contexts.

Assessment Standard 1.2: We know this when the learner conducts investigations and collects data: organises and uses apparatus/equipment or sources to gain and record information.

Questions & Answers

what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
How can I make nanorobot?
Lily
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
how can I make nanorobot?
Lily
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
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Source:  OpenStax, Natural sciences grade 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11077/1.1
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