Experimental
Skill Test
Experiment Skill
Test a join Initiative of Nehru Science Centre &
Bombay Association for Science Education
Time: 10.30 am
to 4.30 pm
Eligibility :
08th to 12th Std.
Maximum 20 Seats
only
Guidelines for
Students – Level 1
As the tests are
designed for evaluation of experimental skills of candidates, all the students
are expected to
READ THE
INSTRUCTIONS CAREFULLY,
FULLY UNDERSTAND
THE TASK GIVEN,
MAKE A MENTAL
PLAN OF PERFORMING THE TASK WITHIN THE GIVEN TIME
They are also
expected to be familiar with the ideas of
1.
Use of all the components in a compass/ geometrical instrument box
2.
Geometrical constructions, calculations of perimeters, surface areas, volumes
of all regular bodies,
3.
Least count and range of instruments,
4.
Selection of proper instruments for measurement of a particular quantity,
5.
Making observations at eye level
6.
Adjustments of the apparatus given in the given space such that the readings
can be taken comfortably.
7.
Systematically record the readings
8.
Apply the knowledge of the topics and draw conclusion from the experimental
findings
Instruments and
concepts for:
Physics
Simple
measurements of all fundamental quantities –
Length – use of
meter scale, foot ruler, measuring tape, vernier callipers, Micrometre screw
gauge,
Mass – use of
spring balance, weighing scales,
Time – use of
regular clocks, watches, stop clock, stop watches,
Temperature –
use of clinical and laboratory thermometers,
Angle – use of
protractor,
Area –
calculations from measurements of regular bodies, determination of area of a
surface using a graph paper
Volume –
calculation from measurements of regular solid bodies, use of measuring flasks,
burettes, pipets, use of conical flasks, use of droppers and syringes.
Tracing of light
rays for –
Reflection on a
plane mirror, locating image of an object due to reflection on a plane mirror
by tracing two rays, removing parallax,
Refraction
through a transparent medium – glass slab, liquid in a container
Measurement of
angle of incidence, reflection, refraction
Chemistry
Use of glassware
in Chemistry experiments especially burettes, pipettes. measuring cylinders,
syringes, thermometers, volumetric flasks, stop watch.
Simple
volumetric analysis using titration method
Identification
of physical properties of given substances/ compounds.
Identification
and classification of chemical elements from atomic structures.
Concept of pH,
use of pH papers/pH indicators,
Types of
chemical reactions, Types of salts, Acids and Bases.
Chemistry in
everyday life eg. Kitchen Chemistry.
Biology
Use of glassware
in Chemistry experiments especially burettes, pipettes. measuring cylinders,
syringes, thermometers, volumetric flasks, stop watch.
Tracing
Identification
of food grains, pulses, different cooking oils etc – kitchen items – by smell,
touch etc (food items are included in schools and kitchen is one of the best
laboratories)
Identification
of plants from seeds, leaves,
Identification
of animal form body parts
Classification
from roots, animal families etc.
……………………………………………………………………………………………………………………..
LABORATORY
MANNERS
} Before
starting the experiment (Planning):
◦
Be sure about:
What you are
measuring
Plan of Action
Apparatus
needed and if it’s available
Time management
Objectives and
are they realistic?
Proper
alignment
} During
the experiment
◦
Arrangement of the apparatus
◦
Be honest in recording your observations
◦
Strictly follow the precautions (especially while handling chemicals).
◦
Tidiness and care of the apparatus
◦
Work ethics
} After
the experiment:
◦
Reporting the results
◦
Rearranging everything back
} You have
successfully completed an experiment when,
◦
You are crystal clear about the science behind it
◦
You are confident about your observations
This does not
mean that you must get “right” answer
◦
You can explain how and why for each part of the experiment to a
third person
◦
You are aware about limitations of your experiment
◦
Made an ordered report of your experiment
……………………………………………………………………………………………….
Thank you !!
