Nature of Science 1
True
An educated guess of what will happen in an experiment
hypothesis
Why should scientists share their results?
Sharing results allows other scientists to review, test, and build upon their work and see if the experiment is valid.
measurements or observations collected and recorded in an experiment or investigation are known as
data
How many independent and dependent variables should there be in order to have a valid science experiment?
One
what is an independent variable
the part of an experiment being changed or manipulated
A factor that is kept the same throughout an investigation.
Control/Constant Variable
Where does the independent variable go on a graph?
X-axis
Four groups of rats are first weighted and then fed identical diets except for the amount of vitamin A. Each group gets a different amount of vitamin A. After 3 weeks on the diet, the rats' weights are measured again to see if they have lost weight. The dependent variable in this experiment is
The weight of the rats.
A controlled procedure with independent and dependent variables carried out to test a hypothesis.
Experiment
what is an observation
Information gathered using your senses or scientific tools.
One person Repeating the experiment over and over
Repetition
What should a scientist do if the results do not support the hypothesis?
Rewrite their hypothesis and try the experiment again
An scientific study of the natural world that does not have independent or dependent variables is an
investigation
A simplified representation of a real system or concept used to explain, predict, or understand it (What is a globe?)
Model
What is the Dependent Variable
The outcome of the independent variable (what is being measured)
When another scientist repeats someone else's experiment to verify whether the results are fair (copying)
Replication
Where does the dependent variable go on a graph?
Y-axis
Using one or more of your senses to gather information is called
observing
Data that involves numbers and measurements, such as the length of a plant growing 15cm
Quantative Data
What is the Control group
The group that stays the same and not given any changes in the experiment. Does not receive independent variable.
To summarize the results and state whether the hypothesis was correct
conclusion
How should a hypothesis be written?
If (independent variable change), then (dependent variable outcome)
The evaluation of scientific works by other scientist to its quality, accuracy, and reliability before publication. Usually posted online.
Peer Review
Data that involves descriptive observations such as the plant leaves being green and smooth.
Qualitative Data