science and engineering practices Flashcards
scientific method
the way scientist study and learn about the world.
observation
using or five senses to gather information about something.
Qualitative observation
using your senses to describe the characteristics of an object-color
Quantitative observation
using numbers of measurements to describe something.
inference
An explanation of an observation based based on prior knowledge.
hypothsis
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 it is graphed on the x-axis.
Dependent/Responding Variable
What you measuring or observing in an experiment and it is graphed on a Y-axis.
C-E-R
Claim,Evidence,Reasoning
Reasoning
the how or why the evidence supports our claim scientific rule.
conclusion
A Written summary of an experiment that uses evidence to prove what you learned.
Evidence
Scientific data that supports your claim.
Claim
Is the answer to the question you are
trying to answer.
mineral
A substance that is formed naturally in the earth. is inorganic, has a definite chemical composition and has a crystal.
streak
The color of a mineral’s powder when it is rubber against a porcelain plate.
luster
That way the surface of a mineral reflects light.
Inorganic
Not derived from living matters.
Crystel
A solid formation that follows a pattern.
Hardness
The ability of a mineral to scratch or be scratched by another mineral.
Cleavage
The tendency of crystals and minerals to break along definite planes resulting in smooth surfaces.
Fracture
The appearance of a freshly broken surface on a mineral that has a rough or irregular surface.
Mohs hardness Scale
A scale used to classify minerals.
Formula
A set of chemical symbols showing in makeup of a chemical compound.