activity 1:

Distance between parallel lines: Draw two lines along the two edges of a scale. You get parallel lines (l and m). Let l || m. ..

Remove the chlorophyll of a few leaves by keeping them in warm alcohol for some time. Wash in distilled water and cut thin section..

Take a new iron nail, a gold item (ring or chain) and a silver item (ring or chain) during rainy weather. See that these are exposed to the effects of moist weather for a few days (3 to 4 days). 1) What changes are observed to all these items in the moist air? 2) How will you know which..

Take about 1 ml each of concentrated hydrochloric acid and liquor ammonia in two different test tubes (Fig.5.7)...

Take a nichrome wire of about 50 cm length and apply a potential difference of 1.5 V from a battery. Measure the current flowing through the wire using an ammeter connected to it in series, and note the potential difference across the resistance using a voltmeter connected across it. Not..

Newton's Laws of Motion..

Hold your bag with a strap made of a thin but strong string. Now lift the same bag with another strap made of a wide cloth band. You will find that carrying a school bag with a wide cloth band is more comfortable than carrying the same with a thin strip. This is because in the second case the weigh..

Differentiation Animation..

Probability - I..