Describe the scientific method. Include the following vocabulary with a brief definition or explanation of each: hypothesis, control, independent, dependent, quantitative, qualitative
1) define the problem 2) formulate a hypothesis, This is a statement basically predicting what you believe will happen based on previous knowledge or research. A basic hypothesis is usually in the form of If ____ then ____ because ___ 3) Test the hypothesis using a well thought out procedure. Consider which variable is independent (this is what you change), which variable is dependent ( this is what you will measure) and which variables should be controlled. 4) Analyze the raw data. Data doesn't have to always be numerical. Numerical data is considered quantitative. Other non-numerical data is considered qualitative. This could include things like color, smell, texture etc. 5) Draw conclusions 6) report your findings
List the order of operations and give an example showing why it is important.
Parenthesis, Exponents, Multiplication/division, Addition/subtraction Example, solve 4 + 7 x 3 from left to right: 4+7 = 11, 11 x 3 = 33 using order of operations: 7 x 3 = 21, 21 + 4 = 25
A + B + C If B = 3A C = B/2 How can you simplify the expression above so it only contains A: I. 4A/2 II. 7A/2 III. 5A + A/2 IV. 11A/2 V. two of the above
V. Two of the above (both III and IV are simplified versions) Start by replacing all variables until you have only As left: A + 3A + B/2 A + 3A + 3A/2 4A + 3A/2 8A/2 + 3A/2 or 4A + 2A/2 + 1A/2 11A/2 4A + A + A/2 5A + A/2