Q: What is the missing first step of the following process: - The water tank over the boiler is heated - Creates steam - The steam is funneled to the piston - Piston uses the steam as energy - The piston causes the crankshaft to move.
A: Coal is heated in the boiler

Q: What is the missing first step of the following process: - Steam is produced under pressure - Flows into a turbine - The turbine spins - Creates electricity.
A: Coal is burned in a boiler

Q: What is the missing first step of the following process: - There is a lot of pressure on the Sun - The pressure forces atoms of hydrogen to fuse together in nuclear reactions - The energy from the reactions gives off different kinds of light - The light travels to the Earth.
A: The gravity of the sun pulls its mass inward

Q: What is the missing first step of the following process: - A pocket of low pressure air is created near the surface of the ocean - Warm air from outside areas pushes into the low pressure area - The warm air keeps rising and forms clouds - The wind is getting fed moisture that evaporates from the ocean - This moisture causes the swirling air and clouds to grow bigger - As it gets bigger the wind rotates faster.
A:
Warm water floats up from the ocean