Lab 1: Introduction to Science

Data Interpretation Table 1 water supply case vs. Fish Population Dissolved Oxygen 0 2 4 6 8 10 12 14 16 18 Number of Fish Observed 0 1 3 10 12 13 15 10 12 13 1. What patterns do you observe based on the information in Table 1? -The more dissolve group O in the water, the more weight is ascertained in that ara of water. 2. Develop a guesswork relating to the amount of fade away oxygen measured in the water sample and the number of fish observed in the body of water. -If there is more dissolved oxygen in the water, there lead be more fish correspond in the argona the water sample is taking from. . What would your experimental plan of attack be to experiment this hypothesis? -I would test the dissolved oxygen in different areas of water, keep track of the fish in those areas and compare the results. 4. What are the independent and dependent variables? -Independent- Dissolved Oxygen -Dependent- Fish 5. What would be your chasteness? -No Control 6. What type of graph would b e appropriate for this data circumstances? Why? -A line graph will be appropriate beca white plague it supports the hypothesis and provide clear results. 7. Graph the data from Table 1 Water Quality vs. Fish Population (found at the beginning of this exercise).You whitethorn use Excel, then Insert the graph, or use another drawing program. You may also draw it neatly by hand and scan your drawing. If you withdraw this option, you must insert the scanned jpg image here. 8. Interpret the data from the graph make in Question 7. -The graph above shows the fish world on the Y (axis) and the dissolved oxygen on the X (axis). The fish population increases in the above graph due to more dissolved oxygen that is found in the body of water. For example There is 0 dissolved oxygen (ppm) in the water, so there is 0 fish observed.Exercise 2 Testable Observations- Determine which of the following observations (A-J) could lead to a testable hypothesis. For those that are testable Write a hypoth esis and null hypothesis What would be your experimental approach? What are the dependent and independent variables? What is your control? How will you collect your data? How will you present your data (charts, graphs, types)? How will you analyze your data? 1. When a plant is placed on a window sill, it grows three inches faster per daylight than when it is placed on a coffee table in the nerve centre of the living room. . The teller at the bank with brownish hair and brown eyes and is taller than the other tellers. 3. When Sally eats healthy foods and exercises regularly, her blood impel is 10 points lower than when she does not exercise and eats unhealthy foods. 4. The Italian restaurant across the street closes at 9 pm barely the one 2 blocks away closes at 10 pm. 5. For the past two days the clouds have come out at 3 pm and it has started raining at 315 pm. 6. George did not sleep at all the night following the start of daylight savings. Exercise 3 ConversionFor each of the following, convert each value into the designated units. 1. 46,756,790 mg = 46,756,790 kg 2. 5. 6 hours = 20,160 seconds 3. 13. 5 cm = 5. 31 inches 4. 47 C = 116. 6 F Exercise 4 Accuracy and Precision 1. During gym class, four students indomitable to see if they could beat the norm of 45 sit-ups in a minute. The first-year student did 64 sit-ups, the second did 69, the third did 65, and the fourth did 67. 2. The average business relationship for the 5th grade math test is 89. 5. The top 4th graders took the test and scored 89, 93, 91 and 87. 2.Yesterday the temperature was 89 F, tomorrow its supposed to be 88F and the next day its supposed to be 90F, even though the average for September is only 75F degrees 3. Four friends decided to go out and play horseshoes. They took a compute of their results shown to the right 4. A local marketplace store was holding a contest to see who could most closely guess the number of pennies that they had indoors a large jar. The first six people guessed the numbers 735, 209, 390, 300, 1005 and 689. The grocery clerk said the jar actually contains 568 pennies. Exercise 5 large Digits and Scientific NotationPart 1 Determine the number of significant digits in each number and write out the specific significant digits. 1. 405000 6 or 3 2. 0. 0098 2 3. 39. 999999 8 4. 13. 00 4 5. 80,000,089 8 6. 55,430. 00 7 7. 0. 000033 2 8. 620. 03080 8 Part 2 Write the numbers below in scientific notation, incorporating what you know about significant digits. 1. 70,000,000,000 7 x 1010 2. 0. 000000048 4. 8 x10-8 3. 67,890,000 6. 789 x107 4. 70,500 7. 05 x 104 5. 450,900,800 4. 509008 x 108 6. 0. 009045 9. 0450 x 10-3 7. 0. 023 2. 3 x 10-2