Name ____________________ Due Date Wednesday 10/21/15 Block _______ Scientific Method/Measurement Review and Study Guide I. Scientific Method. Matching – use the words below to fill in the blank with the matching definition. observation hypothesis problem experiment research conclusion WORD DEFINITION Refers back to the hypothesis and compares results. Describes what you learned and didn't learn. Tells whether you hypothesis was supported or not supported. Information gathered from books, the internet and other resources about the experiment. An educated prediction using the If ______ then _____ because ______ format. The step that states a question about what you're going to experiment on. The step that describes by using your 5 senses and recording what you see/measure in an organized way. A detailed list of materials and instructions on how to test your hypothesis. 6. __________________________ II. List the 6 steps of the scientific method in order. 1. __________________________ 2. __________________________ 3. __________________________ 4. __________________________ 5. __________________________ Observation Problem Hypothesis Research Experiment Conclusion III. Label the examples of each step of the scientific method correctly. (hypothesis, conclusion, problem, observation, experiment, research) 7. _________________ The scientists writes, "Therefore I suggest that my hypothesis was supported because the salt water freezes at a lower temperature then the fresh. 8. _________________ A scientist wants to find out: Does sea water freezes at a lower temperature than fresh water? 9. _________________ The scientist creates a list that includes, 2 beakers, 2 liters of water, 70 grams of table salt, refrigerator. Then the scientist does the following in the laboratory: 1. Fills 2 beakers each with 1 liter of fresh water 2. Dissolves 35 grams of table salt in one of the beakers. 3. Places both beakers in a refrigerator whose temperature is -1 C. 4. Leave s the beaker in the refrigerator for 24 hours. 10. __________________ My prediction is that if I put a beaker of freshwater and a beaker of saltwater in the freezer then the freshwater will freeze first. 11. __________________ The scientist used information from prior experiments and from books on salt water and freshwater to gather information for his experiment. 12. ___________________ After 24 hours in a freezer set at 32°F the scientist examines the both beakers and finds the fresh water to be frozen. The salt water is still liquid. IV. Experimental Design. Vocabulary Matching. Constant variables independent variable repeated trials control dependent variable WORD DEFINITION The standard for comparison in an experiment. Things that can be changed in an experiment-any changes in an experiment. The variable that is changed on purpose by you. A term that means you have the same amount of water, same containers, etc. in an experiment -- things that stay the same during the experiment. The variable the responds to the change in the experiment. You have no control over this variable. The number of times to experiment is done over again. V. Observation, Inference, and Classification Write 3 observations and 1 inference for the picture below. Observation: 1. _____________________________ 2. _____________________________ 3. _____________________________ Inference: __________________________________ ___________________________________________ VI. Measurement review: Complete the chart: Definition: Units measured in: Instrument(s) Used: Length Mass Volume Label each example below with the correct measurements. 1. _____________ 2.______________ 3. _____________ Answer: ________________ Answer: ________________ VI. Variables Read each statement & identify the independent and dependent variable. A. Mandy put a gummy worm in water overnight. The next day she observed that the mass of the gummy worm changed. Independent __________________________________________________________ Dependent ___________________________________________________________ B. Erik timed how fast 3 items, a feather, a marshmallow, and a balloon, fell to the ground when dropped from the same height. He recorded the times for each using a stop watch. He then recorded his data on a graph. Independent ___________________________________________________________ Dependent ____________________________________________________________ VII. Scientific Instruments – Use the space provided to answer HOW each of the scientific tools are used properly to record data. 1. List the 5 steps of how to read a TRIPLE BEAM BALANCE 1. _______________________________________________________________ 2. _______________________________________________________________ 3. _______________________________________________________________ 4. _______________________________________________________________ 5. _______________________________________________________________ 2. List 3 important things to remember when reading a GRADUATED CYLINDER 1. _______________________________________________________________ 2. _______________________________________________________________ 3. _______________________________________________________________ VIII. Reflection – Use the space provided to answer each question in complete sentences. 1. Explain 1 way you will study or prepare for this test. _______________________________________________________________ 2. What is something from class that you enjoyed? It can be something you learned or did. _______________________________________________________________ 3. What are you most proud of that you accomplished in this class so far? _______________________________________________________________ 4. What topic would you like to spend more time on? _______________________________________________________________
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