Science and Engineering Practices Flashcards
(25 cards)
Scientific Method
The way scientist study and learn about the world
Observation
Using your five senses to gather information about something.
Qualitative Observation
Using your senses to describe the characteristics of an object- color, texture, taste.
Quantitative Observation
Using numbers of measurements to describe some thing
Inference
An explanation of an observation based on prior knowledge
Hypothesis
A prediction based on prior knowledge. Always written in an if then statement
Variable
Any factor that can be manipulated controlled for. or measured in an experiment
Control Variable
What must stay the same in the experiment
Manipulated/Independent Variable
The thing that you are testing or changing in an experiment and i is graphed on the X-axis
Dependent/Responding Variable
What you are measuring or observing in an experiment and in is graphed on the Y-axis
C-E-R
Claim Evidence and Reasoning
Claim
Is the answer to the question you are trying to answer
Evidence
Scientific data that supports your claim
Reasoning
the how or why the evidence supports our claim; scientific rule
Conclusion
A written summary of an experiment that used evidence to prove what you learned.
Mineral
A substance that is formed naturally in the Earth, is inorganic, has a definite chemical composition and has a crystal structure.
Streak
The color of a mineral’s powder when it is rubbed against a porcelain plate.
Luster
The way the surface of a mineral reflects light.
Inorganic
Not derived from living matter.
Crystal
A solid formation that follows a pattern.
Hardness
The ability of a mineral to scratch or be scratch by another mineral.
Cleavage
The tendency of crystal and minerals to break along definite planes resulting in smooth surfaces.
Fracture
The appearance of a freshly broken surface on a mineral that has rough irregular surface
Mohs Hardness Scale
A hardness scale used to classify minerals.
