10 Jun Baby chickens, like all baby birds
Question
Graphing Practice 1. Baby chickens, like all baby birds, require a constant source of food. As chick grow, more energy is required for daily activities, and their food requirements increase. The following data table reports the average food eaten by a group of 10 chickens over a 5-day period. Baby Chicken Food Consumption Questions Day Food Consumed (g) 1. Identify the independent and dependent variables. 2. How much grain will the chicks eat on day 6? 3. On day 7? 4. What type of relation does the graph represent? 0 0.0 1 1.0 2 3.2 3 6.5 4 10.6 5 15.4
2. Elodea, a water plant commonly found in aquariums, gives off bubbles of oxygen when placed in bright light. Students in a biology class noted that if a light were placed at different distances from the plant in an aquarium, the rate of bubble production varied. The following data table shows the average results from several trials. Elodea Bubble Production Questions Distance from Light (cm) Bubble Production Rate (bubbles/min) 1. Identify the independent and dependent variables. 2. Estimate the O2 production at 25 cm. 3. At 35 cm? 4. What type of relation does the graph represent? 10 40 20 20 30 10 40 * 50 3 *They forgot to record this distance!
3. The data below summarizes the results of a scientific experiment on the effects of a growth hormone (gibberellic acid) on plant height. A 0.1 molar solution was used in all experiments. Gibberellic Acid and Plant Height Questions Gibberellic Acid (0.1 M) (mL) Plant Height at 1 Week (cm) 1. Identify the independent and dependent variables. 2. Estimate the plant height at 10 mL gibberellic acid. 3. Estimate the plant height at 25 mL?=. 4. Explain why the plant height at 60 mL is not consistent with the rest of the data. 20 18.5 30 20.7 40 45.2 50 62.3 60 10.6
4. A team of scientists wanted to test the effects of temperature on the germination rate of pinto beans. They placed three sets of 100 pinto bean seeds in temperature controlled chambers: Chamber A was set at 15o C, chamber B at 20oC, and chamber C at 25oC. Their results are shown in Table 1 below: Germination Rates of Pinto Beans Questions Day % Germination (15o C) % Germination (20o C) % Germination (25o C) 1. Identify the independent and dependent variables. 2. Compare and contrast the growth rate of pinto beans at the different temperatures. 3. Summarize the experimental results. 0 0 0 0 2 2 10 10 4 10 30 50 6 20 40 80 8 20 60 90 10 35 70 90
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