GRAPHING PRACTICE 1. Jordan planted seedlings & measured the average height the plants grew over several days. a. Draw a line graph to illustrate Jordan’s data. Make sure to include labels & a title. PLANT HEIGHT PLANT GROWTH DAY HEIGHT (cm) 2 5 4 11 6 12 8 29 10 34 37 40 HEIGHT (cm) 30 20 10 b. Did the plants grow at the same rate every day? How can you tell by looking at the graph? 2 4 6 8 10 12 NO. THE GRAPH IS NOT A STRAIGHT LINE DAYS c. Approximately how tall were the plants on day 5? d. What seems to be happening to the rate of growth toward the end of the experiment? e. How tall do you predict the plants will be on day 14? ABOUT 11.5 CM IT IS STARTING TO SLOW DOWN. BETWEEN 39-40

a. Draw a double-line graph to illustrate 2. Amy did an experiment on temperature & plant growth. She compared the height of two identical plants placed in locations with different temperatures over a period of days. AMY’S PLANTS a. Draw a double-line graph to illustrate Amy’s results. Use different colors for each temperature line. Make a Key to identify each line. 20 AMY’S PLANTS 15 DAY Height (cm) @ 200C @ 260C 2 1 3 4 7 5 10 14 9 17 HEIGHT (cm) 10 5 1 2 3 4 5 DAYS

b. What is the scientific question Amy is trying to answer? c. What is the manipulated variable in Amy’s experiment? d. What is the responding variable? e. Name 3 experimental factors that Amy should have kept constant during her experiment: Answer: She should use the same f. If you were Amy, what conclusion would you reach about the relationship of temperature & plant growth? HOW DOES TEMPERATURE AFFECT GROWTH? THE TEMPERATURE HOW THE PLANT GREW. PLANT, SOIL TYPE,AMOUNT OF SUN, AMOUNT OF WATER. PLANTS GROW BETTER IN WARMER LOCATIONS.