Science

• in an experiment, the factor that is deliberately manipulated
• what the scientist changes in the experiment

• in an experiment, the factor that changes as a result of manipulation of one or more other factors (the independent variables)
• what you measure in the experiment

in an experiment, a group that serves as a standard of comparison with another group to which the control group is identical except for one factor

• kilo
• hecto
• deka
• deci
• centi
• milli

the basic unit of length(symbol, m)

the basic unit if volume

the basic unit of weight

a measure of the amount of matter in an object

a measure of the gravitational force exerted on an object

• a method of expressing a quantity as a number multiplied by 10 to the appropriate power
• example. 24327 = 2.4327 x 104

543 any normal number

• 3023(4)
• 3000(1)
• 3.000(4)
• 40000.0(6)
• 0.0002(1)

• D = dependent variable
• R = responding variable
• Y-axis

• M = manipulated variable
• I = independent variable
• X-axis

the knowledge obtained by observing natural events and conditions in order to discover facts and formulate laws or principles that can be verified or tested

• 1. Identify the problem or question
• 2. Make an observation(do research)
• 3. Write your hypothesis
• 4. Design and conduct a experiment
• 5. Collect and analyze the dada
• 6. Write a conclusion
• 7. Communicate results

• properties that are always the same whether the sample observed is large or small
• (density,reactivity,flamability)

a conclusion that is based on facts but that is not the direct and absolute result of those facts

• Deals with descriptions.
• Data can be observed but not measured.
• Colors, textures, smells, tastes, appearance, beauty, etc.
• Qualitative → Quality

• Deals with numbers.
• Data which can be measured.
• Length, height, area, volume, weight, speed, time, temperature, humidity, sound levels, cost, members, ages, etc.
• Quantitative → Quantity