riddles 1.what belongs to you but others use it more than you do? 2.i am the beginning of sorrow,...
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Riddles1. What belongs to you but others use it more than you do?
2. 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?
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Scientific Method• O
• H
• T
• A
• C
OBSERVATION
HYPOTHESIS
TEST
ANALYZE DATA
CONCLUSION
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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)
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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?
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Scientific MeasurementMeasuring Base Unit Instrument• Volume : Liters : Graduated Cylinder
• Mass: Grams: Triple Beam Balance
• Length: Meters: Ruler
• Distance: Light Year: Parallax
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DensityDefinition: How compact something is
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Density
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Density
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What changes Density?
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Determining Density
D = M =V =
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Practice
• Determine density for the following.
• 1. Mass = 5 grams Volume = 5 ml
• 2. Mass = 10 grams Volume = 5 ml
Which will float?
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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?
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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?
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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?) _______________