Exam review NOS

Question 1

the process of obtaining info by using the senses

Answer 1

observation

Question 2

a well-tested explanation for a wide range of observations or experiment results

Answer 2

scientific theory

Question 3

a statement that describes what scientists expect to happen every time under a particular state of conditions

Answer 3

scientific law

Question 4

the experimental factor that’s changed by the investigator

Answer 4

independent variable

Question 5

the experimental factor that’s being measured

Answer 5

dependent variable

Question 6

the group in an experiment where the independent variable being tested isn’t applied so that it may serve as a standard for a comparison against the experimental group where the IV is being applied

Answer 6

control group

Question 7

a possible explanation about an observation that can be tested by scientific investigators

Answer 7

hypothesis

Question 8

list the steps of the scientific method

Answer 8

state the problem/question, research, form a hypothesis, test your hypothesis, gather data, record data, analyze results, draw conclusions, communicate results

Question 9

develop a clear statement defining the problem

Answer 9

state the problem

Question 10

write down all information you already know

Answer 10

research

Question 11

an educated guess and an If…Then…Statement

Answer 11

hypothesis

Question 12

design an experiment to test your hypothesis

Answer 12

test your hypothesis

Question 13

make observations

Answer 13

gather data

Question 14

(the process) data that can’t be expressed as numbers and data that can’t be expressed as numbers

Answer 14

record data

Question 15

create graphs from collected data

Answer 15

analyze results

Question 16

do your results/data support your hypothesis(you ask this question in this phase)

Answer 16

draw conclusions

Question 17

share data and information with peers

Answer 17

communicate results

Question 18

what are the types of investigations

Answer 18

field study, model, descriptive, experimental

Question 19

study of free living plants or animals in their habitats

Answer 19

field study

Question 20

a simplified representation of a system

Answer 20

model

Question 21

describing and/or quantifying parts of a natural system

Answer 21

descriptive investigations

Question 22

an observer tests a hypothesis by looking for changes caused by manipulating a variable

Answer 22

experimental investigations

Question 23

the variable you measure

Answer 23

dependent variable

Question 24

the variable you change on purpose

Answer 24

independent variable