Crater Design Experiment Aim: To see how the height in which the ball is dropped from affects the depth of the crater. Hypothesis: I predict that as the height in which the ball is dropped from increases‚ so does the depth of the crater (the data will be directly proportional). The scientific knowledge which supports this is that the golf ball has a gravitational potential energy which increases as the ball is dropped from higher heights. When the height increases the ball gains more gravitational
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can interfere with the functions of that metal. Aim: the aim of this experiment is to evaluate the effect that sodium chloride has on the rate of corrosion of iron. 1. Experiment 1 2. Hypothesis: An increase in the level of sodium chloride in water will increase the rate of corrosion of an iron nail. 3. The independent variable is the amount of sodium chloride in the water 4. The dependent variable is the rate of corrosion; this will be measured by calculating the percentage
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Chemistry Lab Report Stoichiometry Design Experiment Percentage Yield of Calcium Carbonate and HCl I. Background Information When marble chips and hydrochloric acid are added together‚ they form sodium chloride‚ water‚ and carbon dioxide. This reaction can be displayed by the balanced equation below; CaCO3 (s) + HCl (l) NaCl(s) + H2O(l) + CO2 (g) As the carbon dioxide is formed‚ it will leave the open beaker as a gas. This will result in a loss of mass. The mass change can then be
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1. Identify the independent variable(s) and dependent variable(s) Both groups of participants in this clinical trial‚ the psychotherapy group alone and the psychotherapy plus medication group‚ received psychotherapy but only one group received medication as an adjunct. The independent variable (IV) in this trial is the medication administered to the combined group‚ psychotherapy is considered a constant variable since both groups received it‚ and either an increase‚ decrease‚ or no change with participant’s
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CORRELATIONAL RESEARCH: measuring statistical relationships between 2+ variables * correlation studies measure variables; NOT manipulate: 1. Measure one variable (X) 2. Measure second variably (Y) 3. Statistically determine if X & Y are related (X Y) * BIDIRECTIONALITY PROBLEM: X Y‚ X Y‚ or X Y * THIRD VARIABLE PROBLEM: X Z Y * determines if association between variables exists * cannot draw causal conclusions * CORRELATION
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01.05 – DESIGNING YOUR OWN EXPERIMENT Lesson Organizer Use this document to help you design your experiment about one of the scenarios from the activity. Copy and paste the template then insert your information for each of the steps of the scientific method. Scenario Topic: Animals in Captivity Problem (2 Points) Research (2 Points) Hypothesis (4 Points) Why are dolphins that live in captivity not living as long as dolphins in the wild? ● ● ● ● ● ● dolphin life spans in the wild dolphin life
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the amount being‚ I will divide that in half‚ trying to use the method that the College of Lake County refers to: * Use the same subjects in both the control and experimental groups. (This is called a repeated measures design). * Match subjects on important variables (e.g.‚ for every 20 year old female in the control group there is a 20 year old female in the experimental group). * Random assignment. (Let chance decide who gets placed into which group. Thus‚ each subject has an equal
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variable The variable is the important aspects of the research. In research the concept are measure from variable. Variable are anythings that can take on differing or varing values. it mean that the value of variable vary from person to person‚ time to time or place to place but the meaning of variable are same to all. Thus variable are the charactestics of person‚ groups‚ objects‚ ideas‚ feeling or other thing that researcher want to measure. Variables are thus anything that can take on differing
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BIOLOGY PLAN AND DESIGN LAB Date: / / Syllabus Topic: Hypothesis: A glass of milk lasts longer in cold temperatures. Aim: To determine a better range of temperature for storing a glass of milk. Apparatus and Materials: • 2-100cm3 beakers • 2-500cm3 beakers • Milk • Ice • Hot water • Marker Method: 1. Obtain 2 clean 100cm3 beakers and 2 clean 500cm3 beakers. 2. Add 50cm3 of milk to each 100cm3 beaker. 3. Label the 100cm3 beakers‚ A and B. 4. Label the 500cm3
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Securing Yourself Online Final Version 1 Attention Catcher: You are at risk. All of us are at risk. I’m not talking about STDs‚ global warming‚ or terrorism. I’m talking about your life online. You’re at risk of having your computer taken over so that perfect strangers can read your e-mail‚ access your bank accounts‚ pilfer your credit card numbers‚ and even steal your identity. 2 Listeners Link: Speakers Credibility: As college students‚ we’re particularly vulnerable because we spend
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