Science Test 1 Scientific processes Study guide NC

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1

What is a hypothesis

possible answer to a question

2

What is a controlled expierament

testing ONE thing and changeing ONE thing

3

Three types of models are

physical, mathematical, and conseptual

4

Physical models

look like the real thing but doesnt act to the exact extent

5

Mathematical models

numbers, equations, etc. computers help make fewer mistakes, but when the problem is more complx, the more carefully you have to build it

6

Conseptual models

Graphs like the food chain

7

The explanation for a range of observations is

a theory

8

Scientific law

what will happen in a specific situation, explains whatnot why

9

Theory

explanation that bringsthat brings factsobservations, and tested hypothesis together

10

SI/ISU advantages

all units based upon 10, you can share results globally

11

Untestable/ not valid

a hypothesis that cannot be tested

12

what are scientific models used for

describes how something works or how its structured; acts like a hypothesis, tested later on

13

Mass

Gram kilogram etc. measures of wieght

14

Volume

mL Liter measure of space taken up (liquid)

15

Length

Meter, milometer, nanometer, etc. distance

16

Volume

the amount of space an object takes up

17

It is just a theory is inacurate... why?

tested over and over by many people all over the world, and is proven valid

18

Life science

study of living things

19

a hypothesis needs to be testable to

be useful

20

Theory/laws are different... why?

Theories tell why things happened
laws tell what happened

21

Scientific method steps

1Ask a question? 2Perform a research study. 3Make a hypothesis. 4Test the hypothesis useing an expierament. 5Analyze results by charts and graphs. 6Draw a conclusion.7perform the test again