What is science
Science is based on ______
Observation/measurement
Most scientist use A logical approach by observing and collecting measurable data, formulating hypothesis, testing, and formulating theories that are supported by data called...
The scientific method
A scientific law is
a description of observed and measured phenomena.
What does the right to know law protect you from.
Hazardous chemicals in the workplace.
What is an independent variable
A variable that is changed on purpose.
How is science different than math in terms of right and wrong answers?
Double: What does science study and math study?
Math has true or right answers. Science has anwers that are valid to a degree.
Math studies numbers. Science studies phenomena.
Explain accuracy.
Accuracy is how close a measurement is to the actual value.
Double : What determines accuracy?
A scientific theory is an
explanation of a large body of observed and measured phenomena.
What do the numbers on chemicals tell us
0 is "harmless" 4 is extremely dangerous
What is the independent and the dependent variable?
I V. The single variable that is changed on purpose.
D.V The variable tha changes as a result.
What two things must a scientific law do?
Describe phenomena.
Never be consistently disproven.
What is precision?
Precision is how close a measurement is to the other measurements.
Double: what determines precision?
What is peer review?
Thoeries and studies undergo peer review by the entire scientific community to establish validity.
What do the following colors tell us on chemicals:
Red
Blue
Yellow
White
Red = flammable
Blue = Health
Yellow = Reactive.
White = corrosive
What are the independent, dependent and control variables?
I V. The single variable that is changed on purpose.
D.V The variable tha changes as a result.
The control variables are variables tha DO NOT change.
What does a scientific law do and what does a scientific theory do?
A law describes one phenomena and a theory explains many related phenomena
What does PRHEAC stand for
Problem (Question) Research, Hypothesis, Experiment, Analysis, Conclusion
List the 4 requirements for a theory to be valid.
1. It must explain the majority of phenomena in the field and explain all laws and working models.
2. It must make predictions of future discoveries.
3. It must be testable and falsifiable.
4. It must undergo peer review.
What is the most important part of the right to know law>
Schools and employers must keep material data sheets on hazardous chemicals/
What is a hypothesis
A prop0sed answer to a question showing cuase and effect often in a IF/Then statement.
Definition of science
the systematic study of the structure and behaviour of the physical and natural world through observation and experiment(measurement).
A theory is an explanation of what?
explanation of a large body of scientific knowledge.
Is science true? Explain using the terms scientific laws and scientific theories
Science is based on observed and measured phenomena and is therefore never 100% true.
Scientific Laws are the most valid since they have to have never been consistently contradicted.
Scientific theories by definition MUST be falsifiable and therefore are never trrue.
What are the four main protections of the right to know Law?
MDS Material Data sheets.
Color coding of chemical hazards.
Employers must provide training.
Workers can ask for protection from any chemical hazards.
List the IV DV and three control variables for the following hypothesis.
If we use green milk more people will drink it.
IV: Color of the milk
DV: How many students drink milk per day.
Controls: Brand of milk, time of day, amount of milk, temperature of milk. Age of freshness, of milk