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FOSS Earth History Inv 5 - Limestone (5 days)
Big Idea
Investigate the conditions that lead to the formation of a sedimentary rock, limestone, and how rock layers provide the evidence for ancient environments
Essential Questions
What observations about limestone can assist in determining it's ingredients?
What are the possible sources that may contribute to limestone formation?
What are the necessary requirements for limestone formation?
How can inferences about past environments be made when studying rock layers?

Formulate questions based on observations that lead to the development of a hypothesis.
Classify rocks and minerals by the following observable properties
  • grain
  • color
  • texture
  • hardness
Explain the rock cycle.
Predict how environmental factors (e.g., floods, droughts, temperature changes) affect survival rates in living organisms.
Explain the following processes involved in the formation of the Earth's structure
  • erosion
  • deposition
  • plate tectonics
  • volcanism
Identify the sediments in limestone. Investigate how carbon dioxide contributes to the precipitation of calcium carbonate in water. Model the formation of limestone layers in an ancient environment.
Science & Engineering Practices
Planning and Carrying Out Investigations:  students model the production of  calcium carbonate in seawater
Planning and Carrying Out Investigations:  students create a procedure for testing for calcium carbonate
Planning and Carrying Out Investigations:  students create a layer of limestone
Content/Core Ideas
  • Limestone is a sedimentary rock composed mainly of calcium carbonate
  • Limestone is formed by physical and biological processes.
  • Prehistoric environments can be inferred from evidence from rocks and fossils. Change in environments can be inferred through the interpretation of a sequence of sedimentary rock layers.
Crosscutting Concepts
Systems and System Models
Learning Practices
CC:7.RI.1  students read and answer questions from Where in the World is Calcium Carbonate?
CC: 7.RI.1 students read Coconino Stories
Academic Vocabulary
  • calcium hydroxide
  • limewater
  • control
  • calcium carbonate
  • law of superposition
  • fossil
  • unconformity
Mid-summative Exam 5
Group Discussions:  using academic language to orally express observations
Seawater Investigation
Basin Questions
Interpretation of Past Environments