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Day 8 What are the three types of rock? igneous, metamorphic & sedimentary What's the major difference between the three types? The major difference is in how they form. Daily Warm-Up Exercises 1 Salol Crystals (Part 2, steps 11-18) Investigation 8 One Rock to Another 2 Variables What are some of the variables that might affect the size of the crystals that form? 3 Variables What are some of the variables that might affect the size of the crystals that form? • • • • * Temperature Rate of cooling Length of time in hot water The way the bottle lies as it cools Create a data table to represent both variables that you are testing. 4 Crystal Size Investigation Procedure: 1. Each group will get 2 bottles of salol. 2. Place both bottles in hot water to melt. 3. Place one bottle on its side in ice water and the other bottle on its side in room temperature water. 4. Observe and record every 30 seconds. 5. Compare the crystals in the two bottles when all the material has crystallized. 5 Data Table Room Temperature Cold Water Elapsed Time Observations Elapsed Time Observations 0 sec liquid 0 sec liquid 30 sec 30 sec 60 sec 60 sec 90 sec 90 sec 120 sec 120 sec 150 sec 150 sec Continue on lab Continue on lab 6 Observations – Draw what you see Room Temperature Include measurements Cold Water 7 Day 10 • What variable(s) do you think affect the size of crystals in igneous rocks? • What forces are constantly shaping and reshaping Earth’s surface? (Hint: constructive/ destructive, use resource book) Daily Warm-Up Exercises 8 Day 10 • What variable(s) do you think affect the size of crystals in igneous rocks? Cooling Rate Daily Warm-Up Exercises 9 Day 10 What forces are constantly shaping and reshaping Earth’s surface? (Hint: constructive/ destructive) Earth processes are going all the time. Destructive processes break down landforms. These include weathering, erosion, and tectonic plates sinking and melting. Constructive processes build up. They include mountain building, deposition (sedimentation), and new crust formation. Daily Warm-Up 10 Exercises 10