Unit 1 - Sheet1

Question 1

scientific method

Answer 1

systematic approach to gather knowledge

Question 2

hypothesis

Answer 2

a proposed explanation for an observation

Question 3

independent variable

Answer 3

most regular variable graphed on the X-axis

Question 4

dependent variable

Answer 4

what you are testing graphed on the y-axis

Question 5

control

Answer 5

part of the experiment that remains the same

Question 6

theory

Answer 6

a well-tested explanation for a broad set of observations

Question 7

metric (SI) system

Answer 7

standard system used by all scientists based on multiples of 10

Question 8

law

Answer 8

describes how nature behaves

Question 9

mass

Answer 9

amount of matter in an object

Question 10

weight

Answer 10

the force of gravity on a mass

Question 11

volume

Answer 11

amount of space an object takes up

Question 12

density

Answer 12

mass per unit volume

Question 13

% error

Answer 13

percent that a measured values differs from the accepted value

Question 14

accuracy

Answer 14

closeness of a measurement to the true value

Question 15

precision

Answer 15

closeness of measurements to each other (reproducible)

Question 16

respectively

Answer 16

in the order given

Question 17

significant figures

Answer 17

digits known precisely in a measurement plus one estimated digit