1. Intro Objective 09/10/2012 Review the Scientific Method Take out HW: Experiment Review worksheet 1

2. Experiment Review (HOMEWORK)

3. 1. Hypothesis: If I sleep in space, then I will sleep longer. Alex sets up an experiment to test his hypothesis. Some things he will keep the same are: the time he goes to sleep, wears the same pajamas, and he’ll begin sleeping on his right side. The only thing he changes is that he’ll fly up into space and sleep in zero gravity. Alex stays up in space for ten days and writes down the time he wakes up each day. When he gets back to Earth he has to compare his experiment to another one, so he sleeps for ten days, at the same time, with the same pajamas and same sleeping position and records his data on Earth.

4. 1. Hypothesis: If I sleep in space, then I will sleep longer. Independent variable – sleeping in space Dependent variable – length of sleep Constants – bed time – Same pajamas – Start sleeping on right side – Experiment takes ten days Control – sleeping on Earth

5. 2. Hypothesis: If I give my plant Special X Fertilizer, then it will grow taller. Jane tests her hypothesis by getting two plants. For both plants she places them at the same window and gives them the same amount of water. She gave Plant A the Special X Fertilizer and gave Plant B no fertilizer. Each day, for two weeks, she measures how tall the plants grew.

6. 2. Hypothesis: If I give my plant Special X Fertilizer, then it will grow taller. Independent variable – Special X Fertilizer Dependent variable – Height of plant Constants – Same plants – Same window – Same amount of water – Take measurements everyday Control – Plant with no fertilizer

7. 3. Hypothesis: If I drive the Batmobile, then I will go faster than a regular car. Ethan asked Batman if he could borrow the Batmobile for his test. Ethan is going to compare the Batmobile to a Honda Civic, one of the most common cars on the road. He’s going to have to time both cars, by having them drive a straight two mile course. Other things he will keep the same are: dry road and having the same driver test drive both cars.

8. 3. Hypothesis: If I drive the Batmobile, then I will go faster than a regular car. Independent variable – Batmobile Dependent variable – Speed of car Constants – 2 mile course – Dry road – Same test driver Control – Honda Civic (regular car)

9. 4. Hypothesis: If I stay in the dark for 3 hours then I will see farther. Marty is testing his hypothesis, by standing in the dark for 3 hours and then immediately reading letters at 10ft, 20ft, 30ft, 40ft, and 50ft away. He does this ten times. He then compares his experiment to standing in a lighted room for 3 hours and taking the same test of reading the letters.

10. 4. Hypothesis: If I stay in the dark for 3 hours then I will see farther. Independent variable – Staying in the dark room Dependent variable – How far he can see Constants – Standing 10ft, 20ft, 30ft, 40ft, and 50ft for both tests – Staying in each room for 3 hours – Each test done ten times Control – Staying in a lighted room

11. Outro Objective 09/10/2012 Review the Scientific Method Write one question you still have about the scientific method. 11