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To show the differences in soil particles
Secure some glass jars that hold about half Gallon or two litres of water. Place various handfuls of soil in a jar. Fill the jar with water and then methodically shake up the soil in the water. Let the jar stand for various hours. The heaviest particles will settle out first and the lightest ones last. The layers in the jar after settling will be in the order of the weight of the soil particles. Siphon the water from the jar with a tube. Next study a small sample from each of the layers with a magnifying glass.
what are the elements
Fire Barriers : When a fire starts in a building it spreads quickly by: a) Radiation - Intense heat radiates to neighbouring surfaces which are rapidly heated to ignition poi
Determine the Pathways of Weathering Weathering and soil development proceed almost simultaneously in case of soft rocks, whereas in case of hard rocks weathering precedes soil
Define the Factors That Influence the Facilitated Diffusion Facilitated diffusion is influenced by the following factors: Minor differences in the molecular structure ma
Floating a razor blade Secure a used razor blade of the double edge type. Try floating it on the surface of water. Again watch the surface and see if the surface film dips unde
Explain the Nephrotic Syndrome A type of nephritis (an inflammation of the kidneys) that is characterized by low serum albumin, proteinuria and swelling (oedema). Swelling, wei
Explain Inspiratory Capacity and Expiratory Reserve Volume Inspiratory Capacity (IC): It is the tidal volume and the volume of air taken during maximum inspiratory effort.
The rain cycle You 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 to 40 cm above the box
What is a feature of a nerve tissue?
connect 2 spring balances with their hooks. Ask partner to hold one end of the balance while hold the other end horizontally. Pull the spring balance while your partner just hold t
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