Cell Structure

Cell Structure

Cell Structure includes features from all cell types.
A cell consists of three parts: the cell membrane, the nucleus, and, between the two, the cytoplasm.
Within the cytoplasm lie intricate arrangements of fine fibers and hundreds or even thousands of minuscule but distinct structures called organelles.
Period of Oscillation of Pendulum

Period of Oscillation of Pendulum

This video shows 2 experiments:

1. To calculate average time taken per oscillation varying the string lengths of the pendulum

2. To calculate average time taken per oscillation varying the mass of the bobs attached to the pendulum

Transpiration by Plants

Transpiration by Plants

Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers. Plant absorbs water from the soil, which is transported to the leaves via xylem.
Leaf surfaces are dotted with pores called stomata, and in most plants they are more numerous on the undersides of the foliage. The pores allow water to escape as vapour.
Sand Pendulums

Sand Pendulums

The sand pendulum in the video executes simple harmonic motions in 2 directions at right angles to each other. The sand flowing out of the bottle attached to the pendulum traces the path taken by the oscillating pendulum, creating in the process what is known as Lissajous figures.

They are any of a number of characteristic looped or curved figures traced out by a point undergoing two independent simple harmonic motions at right angles with frequencies in a simple ratio.

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