Concept 1 (nature Of Science) Flashcards
What is science?
A certain way of knowing about the world
How do you make a hypothesis in the correct format?
Use if/then
Ex. If a teacher drinks coffee in the morning, then the students will perform better on their assignments.
What is the independent variable’s relationship with dependent variables?
The independent variable is the thing you change in the experiment, and the dependent variable is the changing result based on what changes with the independent variable
What is the difference between an observation and an inference?
An observation is some you notice and is totally true, an inference is a guess you make with your observation.
What is the difference between accuracy and precision? Why should you have data that is both?
Accuracy is hitting the mark every time to the expected or correct value, precision is getting the exact same thing every time, like repeating the same value.
You should have data that is both because you want to have have the correct value repeatedly.
What are the general steps for designing and conducting an experiment?
Research, hypothesis, procedure, analysis, and conclusion
Can you make an example of scientific investigative design, with appropriate constants and variables? (IV and DV)
Jenny wants to know if certain brands of rings will turn her fingers green faster than others. She buys 3 different rings and wears them all at the same time. She records how long it takes for her finger to turn green. She makes sure to wear them all on the same hand so that there’s no difference in wear.
What are the general steps of the technological design process? What criteria should be considered when you design a solution?
1) Problem identification: Define the need or problem 2) Solution design: Brainstorm ideas and narrow down the best design 3) Implementation: build and test and make improvements as you go. 4) Evaluation: Decide if the problem was solved and you met every constraint.
When designing a solution, make sure you think of cost and time effectiveness and materials
What is a fact?
An observation that is objective and verifiable.
What is a principle?
A statement based on repeated experimental observations; describes an aspect of the world
What are Laws?
Broad concepts or principles
ex. 2nd Law of thermodynamics
What is a theory?
An explanation of an observed phenomenon, NOT a fact
Explains why
What does qualitative mean?
Describes observations’ qualities (color, taste, smell, feel, etc)
What does quantitative mean?
Describes observations using numbers to measure
(Ex. 6 ft tall, 300 mL, 20 pieces, 10.6 grams)
What are independent variables?
What the experimenter will change of manipulate in the experiment, the only thing different between experimental groups
