8 July, 2020
Science has to be enjoyed and observed. And it’s not necessary to always conduct science experiments in physical labs. Here are a few Do It Yourself (DIY) experiments that you can easily do at home. You may ask your siblings to help you. Follow the instructions, observe the experiments carefully, document and seek the concepts behind them. Ready?
Did you ever think that the potato could also have any purpose apart from its ability to be used with any & every vegetable?
How about making it into a battery?
Take 2 firm & fresh potatoes (not the dried ones)
Insert one galvanized nail into the middle of each potato
PUsh a copper coin inside each potato (about an inch away from the nail)
Connect both potatoes with an alligator clip lead. (To complete the battery circuit, attach one clip to the nail in the first potato and the other clip to the copper coin in the second potato. This will complete the circuit for your battery)
Take a digital clock minus the battery.
Attach one clip lead to the copper coin and the other clip to the positive side of the battery box
Attach the second clip lead to the galvanized nail in the second potato and the negative side of the battery box.
You will have your clock working with your potato battery.
Leaves under observation
Ever wondered why are plants called living things and do they really breathe?
Well yes, they do, through their leaves.
Here’s how you can find out:
Take a bowl and fill it with lukewarm water
Find a large leaf
Place the leaf in the bowl of water and put a small rock on top of it so it is entirely submerged under the water
Leave it for a few hours
After a few hours, you will see small bubbles that have formed around the leaf and the edges of the bowl, just how bubbles come out when we let our breath put underwater.
Now to see how water transfers through the leaves,
Take a few leaves and cut off the bottom of each of the leave’s stem.
Place each leaf in a glass filled about a third of the way with water
Add food colouring to the water
Observe the leaves closely (you can also use a magnifying glass)
Observe them over the next two days
You will see the coloured water moving through the xylem tubes of the leaf
See the raisins dancing
Take a glass filled with soda (you can try using varieties of sodas in different glasses)
You can also use baking soda and vinegar in water instead of soda
Put a couple of raisins in each glass
They will sink to the bottom to let you have some time to turn own the music
Soon the raisins could be seen dancing their way to the top of the glass