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lowing soap bubbles with hydrogenmix up a strong soap solution that will make good soap bubbles place a small funnel tube or a clay pipe on the
explain the olfactory receptorsin the section on taste receptors earlier we learnt that there is a regional distribution of taste buds for primary
how to prepare hydrogenhydrogen can be prepared from a dilute acid like as hydrochloric or sulphuric when it is chemically reacted with a metal like
how water can be decomposedyou will require a six-volt storage battery or accumulator or a battery of six dry cells for this interesting experiment
to study a hailstonewhen it hails collect some of the hailstones cut them in half and view how the ice of the hailstone has been built up in layers
frost in the classroomfrost can be made in the classroom by using a tall metal container like as a tin can pack the can with exchange layers of ice
explain the functions of inner earthe inner ear plays an important function in the detection of sound in the last section we left middle ear function
the rain cycleyou can reproduce the rain cycle in miniature in your classroom place a box of plant seedlings on the table place a metal tray about 35
a cloud in a bottleyou can make a cloud form in a bottle get a large glass bottle and fit with a rubber stopper carrying a 10-cm length of glass
dew-point temperatureyou can calculate the dew-point temperature with a shiny can having some water a thermometer and some ice the dew-point
the water cycleheat some water unless it is near the boiling point place it in a drinking glass and rotate the glass so as to moisten the sides right
explain increase in sound wave pressure through middle earthere are certain factors which contribute to an approximately eighty-fold increase in
define the ear canalthe other part of the outer ear is the ear canal the ear canal which conveys the sound to the eardrum is a rather tortuous canal
moisture from breathingmoisture coming from breathing might be shown by blowing on a cool mirror or into a cool glass or
moisture comes from other plantssecure a flower pot which has some bean or pea seedlings that are 10 or 15 cm in height cover the top of the pot with
moisture comes from home plantsplace a cellophane bag over a leaf of some house plant or garden plant and close the end about the stem with a rubber
moisture evaporates from soilfill a flower pot with moist soil and place it on a pair of scales either balances the pot of soil with weights or
weighing moisture againthe similar experiment can be done with a bath towel wet the towel and wring it out hang it on a coat hanger hang the coat
the mop weighs lessput a floor mop in water wring it out and then balance it on a triangular file placed on the corner of a table be sure you have it
define the term belbel the unit of measurement of sound is named after alexander graham bell bell was the inventor of the telephone but for some
another way to show that air expands when heatedsnap a toy balloon over the neck of a small bottle and place the bottle in a pan of warm
air expands when heatedto show that air expands when heated fit an electric light bulb flask or a bottle with a single- whole stopper or cork which
define the term amplitudein simpler terms amplitude is the amount or relative value of a signal amplitude is measured in units of pressure eg
define the nature of soundthis section is a recapitulation of what you have learnt in school you would recall that sound waves consist of the
explain the process of hearingthe ears as we all know are sense organs for hearing the ear consists of an external ear a middle ear and an internal