Bellringer Fri, 9/28

1. Bellringer Fri, 9/28 In your own words… take a guess… • What is a law? • What is a theory? 1 Minute 4 Minutes Time’s Up! 5 2 1 30 Seconds 3 Minutes 10 2 Minutes 9 7 6 8 4 3

3. The Scientific Method

8. What to look for… Graphs MUST have all of the following: Title X-axis (independent variable)(Manipulated) Y-axis (dependent variable) (Responding) Labels of x/y axis and units Plotted Data Colors or Legend if necessary

9. PIE GRAPH Title Section Label or Ledger Percent Labels

10. BAR GRAPH Section Label or Ledger Title Y axis X axis Labels

11. LINE GRAPH Units of Measurement Title Y axis X axis Labels

12. SCATTER GRAPH Title Y axis X axis Labels

13. Histogram Title Y axis X axis Labels

14. Let’s Practice!!

15. IOD 201 Certain species of flowers attract more bees than others with the scent of their pollen. The pollen is found on a structure within the flower called the anther, which is located on top of a structure called the stamen. Flowers typically have multiple anthers and stamens. Bees carry pollen from the flowers on their legs. The bees move from flower to flower collecting pollen. Some of this pollen falls from their legs. This depositing of pollen causes crosspollination to occur (fertilization of the other flowers). Three studies were conducted to study this process. Study 1 For two flower species (A and B), pollen quantity per anther in milligrams (mg), anther quantity per flower in number, and percentage of stamens covered with pollen were recorded (see Table 1).

16. IOD 201 Study 2 The researchers hand-pollinated flowers from a third species, Species C. They also observed the Species C plants being cross-pollinated by the bees in the area. All flowers were observed for 2 years. The scientists recorded the results in Table 2.

17. IOD 201 • 1. In Study 2, the bee pollinated flowers continued to reproduce as time went on. How many of these flowers total were produced after 2 years? • a. 11 • b. 45 • c. 39 • d. 40

18. IOD 201 • 2. Based on the results provided in Table 2, if the flowers were hand pollinated, how many would be reproducing after 1 year? • a. 14 • b. 9 • c. 7 • d. 33

19. IOD 201 • 1. According to Table 1, flower species B had what number of anthers per flower? • a. 11 • b. 18 • c. 7.9 • d. 4.8

20. IOD 202 Students in a summer science class studied the motion of a battery-powered toy car. For the three experiments they conducted, the toy car was allowed to move freely across the smooth surface of a lab table. Experiment 1 During the first experiment, students measured the position of the 58 g toy car with 3 cm width wheels after it had moved in a straight line for different amounts of time. The data for this experiment is given in Table 1. DV IV DV Table 1 IV

21. IOD 202 Experiment 2 In the second experiment, students changed the mass of the car and measured its position after 1.50 seconds. The toy car’s wheels were 3 cm in width. The data for this experiment is given in Figure 2. IV DV Position (c m) Figure 2

22. IOD 202 Experiment 3 Students altered the width of the wheels in the third experiment and measured the position of the 58 g toy car after 2.50 seconds. The data for this experiment is given in Table 3. Table 3 IV DV DV IV

23. IOD 202 • What units were used to measure Car Mass in Figure 2? • g • sec • cm • none of the above Position (c m) Figure 2

24. IOD 202 • 2. What is the interval used for position in Figure 2? • 10 cm • 20 cm • 30 cm • 40 cm Position (c m) Figure 2

25. IOD 202 Table 1 Table or Graph • 3. Which data representation lists position as the dependent variable? • Table 1 • Figure 2 • Table 3 • Both tables and figure 2 DV IV IV DV DV IV Table 3 Position (c m) Figure 2

27. What does the graph below say? 1 Minute 4 Minutes Time’s Up! 5 2 1 30 Seconds 3 Minutes 10 2 Minutes 9 8 6 7 4 3