A Rocky Quiz

based on 7 ratings
Author: Michael Calhoun

Grade Level: 3rd - 4th; Type: Earth and Physical Science


  • What is the project about?
  • The rock cycle is a model that describes the formation, breakdown, and reformation of a rock as a result of sedimentary, igneous, and metamorphic processes. In this project an electric quiz board that has a question related to the rock cycle will be constructed. When a correct answer is connected to its question, a simple circuit is completed and a miniature light bulb will light.

  • What are the goals?
  • A quiz board will be constructed in which a sedimentary, igneous, or metamorphic rock will be displayed, and the user is challenged to answer a question related to its classification. When the person correctly selects the correct classification, a bulb will light up telling them it is the correct match. This project will not only illustrate a simple circuit but also reinforce the concept that rocks in the Earth’s crust go through cycles of formation, breakdown, and reformation.

Research Questions:

  • What is the rock cycle?
  • What question(s) was asked on the quiz board?
  • What type of rock is displayed on the quiz board?
  • What happens when items are matched correctly on the quiz board?
  • What happens when items are matched incorrectly on the quiz board?
  • Using the rock cycle diagram how was the sample display rock formed?
  • Why does the bulb light up when the correct answer is chosen?

Rocks can be classified into the following three categories: Igneous Rocks are formed from the cooling of molten lava. Volcanic igneous rocks are formed from molten rock that cooled quickly on or near the Earth’s surface. Plutonic igneous rocks are the result of the slow cooling of molten rock far beneath the Earth’s surface. Sedimentary Rocks are formed in layers as the result of moderate pressure on accumulated sediments, and Metamorphic Rocks are formed from older “parent” rock (either igneous or sedimentary) under intense heat and/or pressure at considerable depths beneath the Earth's surface.

    The rock cycle is a model that describes the formation, breakdown, and reformation of a rock by various natural processes which can be summarized in the illustration shown.

    The simple quiz board circuit is based on the concept that an electric current is the flow of electric charge which transports energy from one place to another. However, no current exists unless there is a complete pathway or circuit through which electrons may flow. The flow of electricity through a circuit can be stopped by breaking or opening the circuit with a switch. By closing the circuit the flow of electricity

  • Any required diagrams/pictures (Pictures speak a thousand words!)
  • Digital photos can be taken during the assembly process also the following sites offer down loadable images that can be used on the display board:

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