There are lots of different types of energy-these are called energy stores.
When you go higher, your GPE increases. When you go lower, your GPE decreases.
Energy is transferred to this store when there is heat produced.
Energy is transferred to this store when there is a chemical reaction.
Energy is transferred to this store when you use a stretchy object such as a spring. It can also be transferred when you stretch or squash something.
Energy is transferred to this store when there is something to do with speed. For example, when someone is running, one of the stores it will be transferred to is the kinetic store.