Why do we get shock when we open the door suddenly

The reason why we get shocked when we touch doors is there is a positive charge, with a few electrons.There are some extra electrons that jump on you,  to the knob. Whenever that happens that's when it will give a tiny shock on your hand.

Hope this helps!

~Jarvis

Explanation:

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).