Skills Unit Review

Skills Unit Review

Skills Unit Review Speed Dating! Find YOUR ideal Lab Partner!! Have Notebook with you Scientific Method Controlled Experiments Variables Constants Control Groups Interpreting Data

Metric System Scientific Notation Measurements Rotate to your LEFT Students on the outside Students on the inside 1. Scientific Method Students want to test if guinea pigs grow larger if kept in warmer cages. They decided to measure the temperature of the cages in Celsius and the size of

the guinea pigs in grams. During the experiment, they fed the guinea pigs the same type and amount of food each day, housed the pigs in the same types of cages with the same type of exercise equipment and shelter, and gave the pigs the same amount of water. The students measured the size of the guinea pigs each day in the evening for thirty days. a. What is the Independent Variable? b. What is the Dependent Variable? 2. Scientific Method Students want to test if guinea pigs grow larger if kept in warmer cages. They decided to measure the temperature of the cages in Celsius and the size of

the guinea pigs in grams. During the experiment, they fed the guinea pigs the same type and amount of food each day, housed the pigs in the same types of cages with the same type of exercise equipment and shelter, and gave the pigs the same amount of water. The students measured the size of the guinea pigs each day in the evening for thirty days. What are 5 constants the students controlled during the experiment? (There are more than 5 if your imagination is working hard!) 3. Scientific Method Students want to test if guinea pigs grow larger if kept in warmer cages. They decided to measure the temperature of the cages in Celsius and the size of

the guinea pigs in grams. During the experiment, they fed the guinea pigs the same type and amount of food each day, housed the pigs in the same types of cages with the same type of exercise equipment and shelter, and gave the pigs the same amount of water. The students measured the size of the guinea pigs each day in the evening for thirty days. Write a hypothesis for this experiment. (If then because ) 4. Interpreting Data Some business savvy kids set up a lemonade stand on their corner and

tracked their sales according to the temperature outside. The data they collected is shown on the right. a) What temperature resulted in the best sales? b) If the temperature outside were 50 degrees F, predict what how much money they could make in sales? c) Predict how much they could make if the temperature were 78 degrees F. d) NOT on Test: See if you can find 1 or more problems with the graph 5. Interpreting Data

Students conducted an experiment to test how the acidity of soil affects plant growth. The students measured the acidity by taking the pH of the soil and they measured the height of the plants in cm. The results they collected are shown on the right. a) What pH resulted in the tallest plants? b) If the pH rose to 7.4, how tall would you expect those plants to grow? c) How tall would you expect the plants to grow if the pH were 6.5?

6. Scientific Notation A x 10B Explain how to write a number in scientific notation to your partner (explain the parts of the formula A x 10B). Write the following numbers in scientific notation: a) 0.0006 b) 340 c) 6.7 d) 0.000045

7. Scientific Notation A x 10B Explain why the following number is NOT in scientific notation: 44.4 x 104 Write the following number in Standard Notation (the long way): a) 2 x 103 b) 5.6 x 10-3 c) 8.001 x 100 d) 4. 91 x 107 8. Metric System

Before you begin, pretend like your partner has never seen the metric ladder before. Teach them how to use it. Be specific and clear in your instructions. Convert the following metric measurements: A. 35.7 mL = ______ L B. 2000 hg = ______ mg C. 50 dam = ______ mm 9. Metric System Before you begin, pretend like your partner has never

seen the metric ladder before. Teach them how to use it. Be specific and clear in your instructions. Convert the following metric measurements: A. 0.03 kilometers = _______ meters B. 3.401 grams = _______centigrams C. 88.8 L = ______ kiloliters 10. Measurements a) Measure the volume of the liquid in the graduated cylinder. b) Measure the length of the arrow.

c) What metric UNITS would you use to measure somethings mass, length, and volume? * Dont forget to estimate to one digit smaller than the smallest division!* 11. Measurements Practical Determine the volume of the rubber stopper. Record all measurements that get you to the answer.

12. Measurements Practical Find the mass of the following objects: a) b) c) d) Eraser Paper clip 10 marbles 100 mL of water

13. Measurements Practical Find the Density of water D = m / v Record all measurements that lead you to the answer 14.Notebook Check Get your notebook in order Use the table of contents to be sure you have everything Gather any missing papers from file box Rate yourself on the Following from 1-3 (3- I Know it

1. 2. 3. 4. 2 I kind of know it Metric Conversions Scientific Notation Variable Identification Writing a Hypothesis

1- I have no idea) 15. Vocabulary Independent Variable Dependent Variable Observation A. Use of the 5 senses to examine characteristics of something

B. Variable that is controlled and remains the same throughout the course of an experiment C. The variable being tested in an experiment. The one you purposefully change. D. A testable explanation that leads to further investigation. Hypothesis

Constants E. The variable that is measured in an experiment and changes as a result of changes to the Independent Variable. Independent Variable Dependant Variable

Observation Hypothesis Constants

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