LESSON 6A SINKHOLES

Class Agenda TODAY’s PLAN: Today’s TaSK: EQ: What role do rocks and other factors play in why sinkholes happen? LT: Develop and use models to obtain information about the rock cycle SC: To identify the 2 factors (Variables) that cause rock changes Prepare to complete the energy transfer rock cycle lab Draw rock cycle models using the “Model Rubric.” Peer review our rock biography

INITIAL THOUGHTS Is there one path through the rock cycle? Explain… What are the two main factors (Variables) that cause rocks to melt? How do you think energy plays a role in this process?

Write a hypothesis for rocks… Using your current experience with rocks, Predict what 2 factors are required to cause changes to rocks: (On Worksheet) In order for a rock to change, it must _______________________________________ and _____________________________________________.

Rock Cycle Model 1st Draft Below your hypothesis, draw a model of the rock cycle as you currently understand it. Remember our rules for models? (Use your models rubric and notes to help you) Tomorrow you will make your first reiteration after you complete the lab. (Don’t forget to use a growth mindset)

Energy and the rock cycle

slowly energy thousands to millions

Heat Earth was once a molten ball of rock. The earth’s interior still contains molten rock and metal. Heat inside the earth causes rocks to melt partially or completely.

Pressure As sediments pile up they put pressure on lower sediments and smash them together to make sedimentary rocks. Near sinkholes, there are certain types of sedimentary rocks.

Did your model include energy, heat & pressure? Self Check Did your model include energy, heat & pressure? Did it show the flow of energy?

Sedimentary Limestone Accumulation of skeletal remains of marine organisms results in a limestone. Sometimes the fossilized remains of the organism are preserved in the rock. Limestones are common sedimentary rocks. This Photo by Unknown Author is licensed under CC BY-SA This Photo by Unknown Author is licensed under CC BY-NC-ND This Photo by Unknown Author is licensed under CC BY-SA

Class Discussion: Review from Rock Bio Research Who are the rock experts in the room? Who has played the rock cycle game, completed the Actively Learns and completed their rock biography? What is the rock cycle? Why is it important? Why do rocks look so different?

Watch these videos to prepare Chocolate Rock Cycle Link (1:14) Candy Rock Cycle Video Link (8:35)

After writing your hypothesis… Read the materials list & procedures on the next slides Answer these questions in your notebook to help you prepare: What questions do you have? Do you understand what the materials are? What type of data are we collecting? Why aren’t we using units? Which science rule, (Physical property), will we be using to solve this test?

REVIEW: Materials 1. Look over the matching list on your table. 2. Is there any materials you are not familiar with? 3. What will be important safety precautions tomorrow?

REVIEW: ProcedureS Read part 1 of the procedures and identify with your team which materials you will need for that part. (Make sure to ask questions now) Repeat for Parts 2-5 REMEMBER: The less questions you ask me tomorrow, the better your score

Complete your Middle check and answer the Revised Thoughts What was surprising? What did you already know but see in a new way? What do you still need help with?