[Q]: - A signal is sent to the heating system - Heating oil travels from the tank to the burner - The oil becomes a fine mist mixed with air - The oil/air combination is injected into the burner - The burner is ignited in the combustion chamber - The furnace heats the air - The blower sends the heated air through the ducts - The heated air comes out the vents and into the room. What might be the first step of the process?
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[A]: The thermostat senses that the temperature has dropped

[Q]: - Egg is produced after fertilziation - Mother sits on egg until it hatches - Bird Hatches - Grows up - Flee the next - Starts family - Dies. What might be the first step of the process?
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[A]: Two birds meet each other

[Q]: - A large amount of rain occurs - The water builds up behind the dam - The dam opens its floodgates when it starts to get full - The water flows into a river below the dam - The dam closes its gates - The dam will occasionally open its gates again to gradually release more water - Eventually all of the floodwater will be slowly released into the river without causing any flood damage. What might be the first step of the process?
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[A]: A dam is built in an area prone to flooding

[Q]: - The magma cools - Crystals form and the magma become igneous rocks - The igneous rocks break down into sediment - Become sedimentary rocks - If subjected to heat and/or pressure from plate-tectonic activity the sedimentary rocks become metamorphic rock - The metamorphic rocks melt - Become magma again. What might be the first step of the process?
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[A]:
Rock begins as magma from a volcano