Name_________________________________________ Hall_________ Date_____________ Ms. Sameroff OBJECTIVE: DO NOW SWBAT describe the goals of science. SWBAT describe procedures used in the scientific method. VOCABULARY ACTIVITY #1 Activity #2 Exit 1-1 What is Science? DAY 2 DO NOW 1. Explain the main idea of the cartoon. 2. What is the cartoonist opinion about the topic portrayed in the cartoon? (e.g. What is the cartoonist's bias, or point of view on the event or people in question) 2. Using your prior knowledge of biology put the following put the following steps of the scientific method in the proper order. ________Research the problem ________Observe and record ________Make a hypothesis ________Identify the problem ________Arrive at a conclusion ________Test the hypothesis VOCABULARY Directions: Use your worksheet to define the following words. Scientific Method Control Group Hypothesis Independent Variable Dependent Variable ACTIVITY #1-STEPS IN THE SCIENTIC METHOD 1 2 Read the excerpt below and answer the questions that follow A Safer Cigarette? The electronic cigarette, an item that can satisfy a smoker’s nicotine craving without burning tobacco, has been on the market for over three years now. This device has not yet been linked to cardiac disease, cancer, nor chronic respiratory disorders, which are a part and parcel of tobacco cigarettes. An e-cigarette consists of a rechargeable battery as well as a small cartridge which contains liquid nicotine. The battery is used to heat the cartridge, which in turn allows the liquid nicotine to turn into a water vapor. Though makers of the e-cigarette often herald their product as a much healthier alternative, local researchers are interested in determining whether this new fad is actually a fast track to becoming strongly addicted to nicotine. They have designed an experiment including 10,000 cigarette smokers, 5,000 of which were asked to switch over to the e-cigarette. The researchers plan to monitor how many cigarettes the people in each group smoke per day. The data from this experiment will allow the researchers to conclude whether the e-cigarette causes an increase in smoking, indicating a greater extent of addiction. 1. State the hypothesis that local researchers are testing_______________________________________________________ _____________________________________________________________________________________________________ 2. Identify the independent variable in the experiment ________________________________________________________ 3. Identify the dependent variable in the experiment _________________________________________________________ 4. Why did the experiment include 5,000 smokers who were not using the e-cigarette? ___________________________________________________________________________________________________ ___________________________________________________________________________________________________ ___________________________________________________________________________________________________ ACTIVITY #2 3 Think-Pair-Share A scientist conducted an experiment to test whether maple seeds exposed to acid rain will take longer to grow than seeds exposed to normal rain. The scientist set up four groups. The water used for each group had a different pH value: 5.6, 4.0, 3.0, and 2.0. Normal rain has a pH of 5.6 and acid rain has a pH between 1.5 and 5.0. After ten days, the number of seeds that had germinated (grown) in each group was counted. State the hypothesis for the experiment Identify the control group in the experiment Identify the experimental group in the experiment _____________________________________________________________________________________________________ _____________________________________________________________________________________________________ _____________________________________________________________________________________________________ _____________________________________________________________________________________________________ _____________________________________________________________________________________________________ EXIT TICKET Explain the steps in the scientific method. _____________________________________________________________________________________________________ _____________________________________________________________________________________________________ _____________________________________________________________________________________________________ _____________________________________________________________________________________________________ _____________________________________________________________________________________________________ _____________________________________________________________________________________________________ _____________________________________________________________________________________________________ Why do we use the scientific method? _____________________________________________________________________________________________________ _____________________________________________________________________________________________________ After the lesson, now I understand… 4 _____________________________________________________________________________________________________ _____________________________________________________________________________________________________ Something I still need help with… _____________________________________________________________________________________________________ 5
