[Q]: What is the missing first step of the following process: - The flashlight is turned on - Two contact strips touch one another - A circuit is completed between the batteries and the lamp - The lamp in the flashlight begins to glow - The reflector in the flashlight directs the lamp's beam - A straight beam of light is generated - The flashlight is turned off - The circuit is broken - The beam is no longer visible.
****
[A]: Batteries are put in a flashlight

[Q]: What is the missing first step of the following process: - The pressure causes plates to move - Magma explodes to the surface - The lava from the eruption cools to form new crust - After several eruptions, the rock builds up and a volcano forms -
****
[A]: Magma rises through cracks in the Earth's crust

[Q]: What is the missing first step of the following process: - Rain picks up carbon dioxide as it falls to earth - The rain falls on the soil over the limestone - The carbon dioxide in the rain washes through the soil - The carbon dioxide turns into acid - The acid in the rain gets to the limestone below the soil - The acid dissolves the limestone - Acid continues to erode the limestone with more rain over time - The eroded limestone sometimes forms caves.
****
[A]: Limestone is located under the soil

[Q]: What is the missing first step of the following process: - Water droplets are in clouds - The air gets cold - Water droplets turn into ice crystals - Ice crystals in clouds stick together and become snowflakes.
****
[A]:
Water evaporates from the ground up to the sky