Mention any four common scientific experiment which can be performed in your own residence using the locally available resources

Water Evaporation Experiment: This experiment is to demonstrate the process of evaporation. You will need a bowl of water, a marker, and a sunny spot. Fill the bowl with water and mark the water level. Place the bowl in a sunny spot and observe the water level over a few days. You will notice the water level decreases due to evaporation.

Homemade Lava Lamp: This experiment demonstrates the principle of density. You will need a clear container, water, vegetable oil, food coloring, and effervescent tablets. Fill the container with water and oil, add a few drops of food coloring, and then drop in the effervescent tablet. You will see bubbles rising up like a lava lamp due to the difference in density between oil and water.

Growing Crystals: This experiment demonstrates the process of crystallization. You will need a cup, string, pencil, water, and sugar or salt. Dissolve the sugar or salt in hot water, hang the string into the cup with the pencil, and leave it for a few days. You will see crystals forming on the string.

Vinegar and Baking Soda Volcano: This experiment demonstrates a chemical reaction. You will need a container, vinegar, baking soda, and dish soap. Put baking soda and a few drops of dish soap in the container, then pour in the vinegar. You will see a foamy eruption like a volcano due to the chemical reaction between vinegar and baking soda.