<p>Experimental Design Worksheet Name ______Scientific Method Period ______Date______</p><p>Definitions: Define the following words and concepts related to the scientific method.</p><p>1. Hypothesis: ______</p><p>2. Independent Variable: ______</p><p>3. Dependent Variable: ______</p><p>4. Control Group: ______</p><p>5. Experimental Groups: ______</p><p>6. Controlled Variables (Constants): ______</p><p>7. Trials: ______</p><p>Practice: Write a hypothesis for each of the statements and identify the variables, control group, and experimental group.</p><p>1. Cigarette smoking increases the risk of lung cancer.</p><p>Hypothesis: If ______, then ______</p><p>Independent Variable: ______Dependent Variable: ______</p><p>Control Group: ______Experimental Group: ______</p><p>2. Eating breakfast increases performance in school.</p><p>Hypothesis: If ______, then ______</p><p>Independent Variable: ______Dependent Variable: ______</p><p>Control Group: ______Experimental Group: ______</p><p>3. Hummingbirds are attracted to the color red.</p><p>Hypothesis: If ______, then ______</p><p>Independent Variable: ______Dependent Variable: ______</p><p>Control Group: ______Experimental Group: ______</p><p>4. Bats locate food using sound waves. Hypothesis: If ______, then ______</p><p>Independent Variable: ______Dependent Variable: ______</p><p>Control Group: ______Experimental Group: ______</p><p>5. iBook batteries last for 5 hours.</p><p>Hypothesis: If ______, then ______</p><p>Independent Variable: ______Dependent Variable: ______</p><p>Control Group: ______Experimental Group: ______</p><p>Situations: Read the situation below and design an experiment.</p><p>In the statements below, write the hypothesis, variable, control groups and experimental groups. 1. Plants grow best in white light.</p><p>Hypothesis: If I use white light, then my plants will grow better.</p><p>Independent Variable: white light Dependent Variable: growth</p><p>Control Group: no white light (different color) on plants Experimental Group: white light on plants</p><p>2. The deer population decreases in the winter due to the lack of food.</p><p>Hypothesis: If______, then ______</p><p>Independent Variable: ______Dependent Variable: ______</p><p>Control Group: ______Experimental Group: ______</p><p>3. Students who study perform better in school.</p><p>Hypothesis: If______, then ______</p><p>Independent Variable: ______Dependent Variable: ______</p><p>Control Group: ______Experimental Group: ______</p><p>Read the following situation and answer the following questions.</p><p>Suzie Q wants to know the effect of different colors of light on the growth of plants. She believes that plants can survive best in white light. She buys 5 ferns of the same species, which are all approximately the same age and height. She places one in white light, one in blue light, one in green light, one in red light and one in the closet. All of the ferns are planted in Miracle-Grow and given 20 mL of water once a day for 2 weeks. After the two weeks, Suzie observes the plants and makes measurements.</p><p>Hypothesis: If I use a certain color light, then plants will grow less than plants with white light.</p><p>Independent Variable: colored light Dependent Variable: growth</p><p>Control Group: plants with white light Experimental Group: plants with colored light</p><p>Constants: Amount of water</p><p>What types of measurements can Suzie make on the plants to determine how they did in different types of light? Stem length</p><p>Experimental Design Worksheet Name ______Scientific Method Period ______Date______</p><p>Definitions: Define the following words and concepts related to the scientific method.</p><p>1. Hypothesis: Your best explanation for something observed in the natural world. 2. Independent Variable: The parameter that changes in the Experimental group. What we’re testing.</p><p>3. Dependent Variable: The outcome of the experiment due to the independent variable. This is your data and it will be collected in both the Experimental and Control groups.</p><p>4. Control Group: Procedures that are identical to the experimental group EXCEPT for there is NO independent variable.</p><p>5. Experimental Groups: Procedures used to test the independent variable.</p><p>6. Controlled Variables (Constants): Parameters of both the experimental and control groups that must remain the same.</p><p>7. Trials: Number of samples taken during an experiment.</p><p>Practice: Write a hypothesis for each of the statements and identify the variables, control group, and experimental group.</p><p>1. Cigarette smoking increases the risk of lung cancer.</p><p>Hypothesis: If I smoke, then I will get lung cancer</p><p>Independent Variable: smoking Dependent Variable: cancer</p><p>Control Group: individual that doesn’t smoke Experimental Group: smoking individual 2. Eating breakfast increases performance in school.</p><p>Hypothesis: If I eat breakfast, then I will do better in school</p><p>Independent Variable: breakfast Dependent Variable: school performance</p><p>Control Group: Someone not eating breakfast Experimental Group: Someone eating breakfast</p><p>3. Hummingbirds are attracted to the color red.</p><p>Hypothesis: If I use a red feeder, then hummingbirds will come and use it. Independent Variable: red feeder Dependent Variable:hummingbird use</p><p>Control Group: other color feeder Experimental Group: red feeder</p><p>4. Bats locate food using sound waves.</p><p>Hypothesis: If I hide food from a bat, then the bat will be able to use sound waves to Independent Variable: hidden food Dependent Variable: bat finds food</p><p>Control Group: unhidden food Experimental Group: hidden food</p><p>5. iBook batteries last for 5 hours.</p><p>Hypothesis: If one uses iBook batteries, then the device will last for 5 hours.</p><p>Independent Variable: iBook batteries Dependent Variable: length of time</p><p>Control Group: device with other batteries Experimental Group: device with iBook batteries</p><p>In the statements below, write the hypothesis, variable, control groups and experimental groups. 1. Plants grow best in white light.</p><p>Hypothesis: If______, then ______</p><p>Independent Variable: ______Dependent Variable: ______</p><p>Control Group: ______Experimental Group: ______</p><p>2. The deer population decreases in the winter due to the lack of food.</p><p>Hypothesis: If______, then ______</p><p>Independent Variable: ______Dependent Variable: ______</p><p>Control Group: ______Experimental Group: ______</p><p>3. Students who study perform better in school. Hypothesis: If______, then ______</p><p>Independent Variable: ______Dependent Variable: ______</p><p>Control Group: ______Experimental Group: ______</p><p>Read the following situation and answer the following questions.</p><p>Suzie Q wants to know the effect of different colors of light on the growth of plants. She believes that plants can survive best in white light. She buys 5 ferns of the same species, which are all approximately the same age and height. She places one in white light, one in blue light, one in green light, one in red light and one in the closet. All of the ferns are planted in Miracle-Grow and given 20 mL of water once a day for 2 weeks. After the two weeks, Suzie observes the plants and makes measurements.</p><p>Hypothesis: If______, then ______</p><p>Independent Variable: ______Dependent Variable: ______</p><p>Control Group: ______Experimental Group: ______</p><p>Constants: ______</p><p>What types of measurements can Suzie make on the plants to determine how they did in different types of light? ______</p>