Scientific Method
The first step
Problem/Question
A hypothesis is...
an educated guess
The number of Variables
Three
A summary of many experimental results. Tells how things work
Law
Observation or Inference
I smell smoke in the hallway
Observation
A series of steps scientist use to answer questions and investigate problems
Scientific method
we write a hypothesis using....
an IF Then statement
The Variable that is measured
Dependent Variable
An explanation for some phenomenon That is based on observation
Theory
Observation or Inference
The students like school
Inference
In a controlled experiment what scientist investigate
variable
An explanation that is based on prior scientific research or observation and that can be tested
Hypothesis
Name the Three types of Variables
Control
Independent
Dependent
Any piece of information acquired through observation or experiment
Data
The process of obtaining information by using the senses
Observation
The 4th step in the scientific method
Experiement
Jim wanted to see if miracle grow really worked on plants he set up an experiment with 2 plants that received the same water and sunlight but only one received the miracle grow.
What is a hypothesis for this experiment
If the plant gets miracle grow Then the plant will grow bigger.
The variable That stands alone and isn't changed by the other variables in the experiment
Independent variable
A pattern, plan representation, or description designed to show the structure or workings of an object
Model
A conclusion or educated guess drawn from observation as well as previous knowledge
Inference
Name all six steps in order
Problem/Question
Research
Hypothesis
Experiemnt
Data/analyze
Conclusion
Write a hypothesis.
How does the amount of exercise affect a persons heartrate?
If a person exercises more then their heartrate will increase
Name the Independent Variable and the Dependent Variable
Mike wanted to see how running speeds affected a persons heartrate. He had a person run at 4 different speeds and measured their heartrate each time.
IV = running speeds
DV = Heartrate
The knowledge obtained by observing natural events and conditions in order to discover facts and formulate laws or principles.
Science
must remain the same or equal at all times in order to receive accurate results.
Control