proportional reasoning

Question 0

primary goal of sci

Answer 0

to describe the phenomena that make up the universe (including our world)

Question 1

scientific literacy

Answer 1

the set of skills & background knowledge necessary for being a competent scientist

Question 2

physics

Answer 2

the study of how the universe works, what the universe is made of, & how the universe is structured

Question 3

scientific models

Answer 3

desc’s of the universe

• verbal desc’s
• graphs/pics
• mathematical equations
• combos of the above

Question 4

scientific law

Answer 4

the pinnacle of scientific desc; desc of a phenomenon (relationship among variables) thought 2 be universal; usually mathematical

Question 5

proportional reasoning

Answer 5

figuring out how a change in 1/more variables in an equation affects another variable

Question 6

direct variation

Answer 6

when a change in 1 variable produces an equal change in another variable, we say that those 2 variables are “directly proportional”

Question 7

inverse variation

Answer 7

when a change in 1 variable produces a reciprocal change in another variable, we say they’re “inversely proportional” / tht they “vary inversely”; general form L = 1/M

Question 8

joint variation

Answer 8

Equation: c = 5ab
Variable c is jointly proportional to a and b. That means c is directly proportional to both a and b.
Doubling a causes c to double. Doubling b causes c to double. Doubling both a and b causes c to quadruple.