-
independent variable
- in an experiment, the factor that is deliberately manipulated
- what the scientist changes in the experiment
-
dependent variable
- 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
-
control group
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
-
metric system
- kilo
- hecto
- deka
- deci
- centi
- milli
-
meter
the basic unit of length(symbol, m)
-
liter
the basic unit if volume
-
gram
the basic unit of weight
-
mass
a measure of the amount of matter in an object
-
weight
a measure of the gravitational force exerted on an object
-
scientific notation
- a method of expressing a quantity as a number multiplied by 10 to the appropriate power
- example. 24327 = 2.4327 x 104
-
standard notation
543 any normal number
-
-
-
-
Signifigant digits
- 3023(4)
- 3000(1)
- 3.000(4)
- 40000.0(6)
- 0.0002(1)
-
DRY MIX
- D = dependent variable
- R = responding variable
- Y-axis
- M = manipulated variable
- I = independent variable
- X-axis
-
science
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
-
Scientific Method
- 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
-
Characteristic Properties
- properties that are always the same whether the sample observed is large or small
- (density,reactivity,flamability)
-
inference
a conclusion that is based on facts but that is not the direct and absolute result of those facts
-
Qualitative Data
- Deals with descriptions.
- Data can be observed but not measured.
- Colors, textures, smells, tastes, appearance, beauty, etc.
- Qualitative → Quality
-
Quantitative Data
- 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
|
|