Scientific Methods
1st step
State the Problem
How to find the volume of a solid rectangle
Length x Width x Height
A quantity that can have more than a single value.
Variable
Bar Graph, Line Graph, and Circle (Pie) Graph
A visual display of information or data.
Graph
2nd step
Research and Gather Information
How to find the density of matter
Divide the mass by its volume
Factor that, as it changes, affects the measure of another variable.
Independent Variable
One example of a technological object
phone, pencil, chromebook, etc.
The dimensions, capacity, or amount of something.
Measurement.
3rd and 4th steps
Form a Hypothesis and Test a Hypothesis
The volume of a square whose length is 2 cm, width is 5 cm, and height is 3 cm.
30 cm3
Factor that changes as a result of changes in the other variables.
Dependent Variable
The type of graph that often shows how a relationship between variables change over time.
Line Graph
Anything that has mass and takes up space.
Matter
5th and 6th step
Analyze the Data and Draw Conclusions
The density of an object whose mass is 4 grams and has a volume of 2 cm3.
2 g/cm3
You water three sunflower plants with salt water. Each plant receives a different concentration of salt solutions. A fourth plant receives pure water. After a two week period, the height is measured. What is the dependent variable?
Height of the Sunflower Plants
One example of technological knowledge or skills.
How to build a phone, building, etc. How to use a certain technology...
Occurs when the scientist's expectations changes how the results are analyzed or the conclusions are made.
Bias
All 6 steps in order
State the Problem, Research and Gather Information, Form a Hypothesis, Test a Hypothesis, Analyze the Data, and Draw Conclusions.
The density of a rectangle whose length is 1 cm, width is 2 cm, height is 1 cm, and mass is 4 grams.
2 g/cm3
You water three sunflower plants with salt water. Each plant receives a different concentration of salt solutions. A fourth plant receives pure water. After a two week period, the height is measured. What is the independent variable?
The concentration of salt solutions
What type of technology is the internet?
A Technological System
Differentiate between a scientific theory and a scientific law.
A scientific theory is an explanation of things or events based on knowledge gained from many observations and investigations while a scientific law is a statement about what happens in nature and that seems to be true all the time.