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Riddles. What belongs to you but others use it more than you do?
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Riddles What belongs to you but others use it more than you do? I am the beginning of sorrow, and the end of sickness. You cannot express happiness without me, yet I am in the midst of crosses. I am always in risk, yet never in danger. You may find me in the sun, but I am never out of darkness. 3. Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?
Scientific Method OBSERVATION • O • H • T • A • C HYPOTHESIS TEST ANALYZE DATA CONCLUSION
What are you Goals? The 7 Habits of Highly Effective Teens • Habit 1: Be Proactive: Principles of Personal Choice positive friends/activities • Habit 2: Begin with the End in Mind: Principles of Personal Vision Goals • Habit 3: Put First Things First: Principles of Integrity & Execution • Habit 4: Think Win/Win: Principles of Mutual Benefit (help / be helped) • Habit 5: Seek First to Understand, Then to be Understood: • Habit 6: Principles of Creative Cooperation & Continual Improvement • Habit 7: Sharpen the Saw: Principles of Balanced Self-Renewal (adapt)
Riddles • 1. You answer me, although I never ask you questions. What am I? • 2. What's the greatest worldwide use of cowhide? • 3. What goes around the world and stays in a corner?
Scientific Measurement MeasuringBase UnitInstrument • Volume : Liters : Graduated Cylinder • Mass: Grams: Triple Beam Balance • Length: Meters: Ruler • Distance: Light Year: Parallax
Density Definition: How compact something is
Determining Density D = M = V =
Practice • Determine density for the following. • 1. Mass = 5 grams Volume = 5 ml • 2. Mass = 10 grams Volume = 5 ml Which will float?
Density Practice • Determine the mass of the following • 1. Density = 1 g/ml volume = 3 ml • 2. Density =.9 g/ml Volume = 2 ml Which one could be water? What does adding salt to water do?
Practice • Determine the volume for the following • 1. Mass = 6 grams Density = 2 grams/ml • 2. Mass = 12 grams Density = 4 grams/ml Which one is more compact? Is muscle or fat more dense?
OHTAC Review • What is the name of the theory of how the dinosaurs became extinct? ___________________________ • What is the theory of how the solar system began? ________________________ • What is 90o divided by 3? _________ (no calculator) • What step in the scientific method is also called an educated guess? _______________ • What step in the scientific method uses a table to collect data? _____________ • What step in the scientific method uses a graph to present results? _____________ • If you are testing the effects of fertilizer on plant growth, what is your independent variable? ___________________ • What is your dependent variable? (what are you testing?) _______________