Vocabulary
An educated guess based on observations
Inference
Percentage of ethnicities in school of students
Circle (percernts)
What is being measured
Dependent (responding) variable
Theory or Law:
Chemical reactions occur because, the different atoms in a chemical lose or gain electrons which makes them bond with other atoms
Theory - this is explaining why chemical reactions are occurring
there are 26 students in the class
Quantitative Observations
The time it takes a soccer player to run 3 different distances.
Line (time)
Made to have no influence on the measurements in an experiment
Controlled variable (constant)
Theory or Law:
The elements of matter in a chemical reaction are not destroyed they are simply rearranged.
Law - it doesn't explain why, simply presents the consistent observation
The stars are brighter tonight than the other day
Qualitative observation
What type of pet and how many each student has
Bar (compare type of pet to amount)
Intentionally changes by the researcher
Independent (manipulated) variable
Theory or Law:
Objects always exert a pull on other objects with mass that is proportional to how much mass each object has
Law - "always" also proportional hints to a mathematical relationship. Notice that it doesn't explain why, simply presents the consistent observation
A well-substantiated explanation acquired through the scientific method and repeatedly tested
Theory
The mass of metal blocks in grams to the volume of the metal blocks in milliliters
Line (Both sets of data are numbers)
What is the Independent (manipulated) variable:
3 basketball players are timed to see how long it takes them to dribble the ball down the court.
The 3 different Basketball players
Theory or Law:
Object on the planet Earth fall to the ground because all things with mass are attracted to each other. Since the Earth is much more massive than anything on the planet they will be effected by this attraction.
Theory - Its explains why things fall
A statement describing what always happens under certain conditions
Law
The size in cm of a paper airplanes wingspan to how far it flys
Line (Both sets of data are in numbers)
What is the Independent (manipulated) variable:
50 people are asked what pet do they have and how many.
The type of pet
Theory or Law:
Every action has an equal an opposite reaction.
Law - just states what always happens, doesn't explain why.