Whenever lightning strikes it separates the air where it goes. This air then rushes back together making a loud noise when it connects, creating thunder.
Mirror: Reflects off of
Glass of water: Goes through
Dark Fabric: Absorbs into
Work done against gravity to climb upwards is always stored in the form of gravitational potential energy
so we can say

here h = vertical height raised
so here we know that

here we have

now from above equation


so work done will be given by above value
Hydrosphere - all the waters on the earth’s surface.