science and measurement test

Question 1

law

Answer 1

statements that describe patterns in nature that are based on repeated observations

Question 2

theory

Answer 2

statements that explain why the observed patterns in nature occur, supported by a large body of evidence
(why the laws work)

Question 3

model

Answer 3

representation of an object or event that can be studied to understand the real thing

Question 4

observation

Answer 4

description of matter made using senses

Question 5

inference

Answer 5

conclusion based upon one or more observations

Question 6

scientific method

Answer 6

way to ask and answer scientific questions by making observations and doing experiments

state the question
read, reasearch, investigate
form a hypothesis
design an experiment
make observations
draw conclusions

Question 7

experiment

Answer 7

a procedure that establishes the validity of a hypothesis

Question 8

hypothesis

Answer 8

an idea, guess or explanation that you then test through study and experimentation

Question 9

length

Answer 9

a measure of how long something is

m

Question 10

mass

Answer 10

a measure of how much matter is in an object (g)

Question 11

volume

Answer 11

the amount of space taken up by a substance in a three-dimensional container (mL / m^3)

Question 12

independent variable

Answer 12

controllable variable, changing/testing to see how it affects dependent variable

Question 13

dependent variable

Answer 13

non controllable variable, depends on independent variable with its outcome

Question 14

accuracy

Answer 14

how close the measurements are to the target amount

Question 15

precision

Answer 15

how close the measurements are to each other when repeated, and a fineness of an individual measurement

Question 16

d=

Answer 16

mass over volume

Question 17

m=

Answer 17

density x volume

Question 18

v=

Answer 18

mass over density

Question 19

constant

Answer 19

part of experiment that doesn’t change