Chapter 1 Vocabulary Cards

Question 1

bias

Answer 1

when what the scientist expects changes how the results are viewed

Question 2

constant

Answer 2

a factor that does not change when other variables change

Question 3

control

Answer 3

the standard by which the test results can be compared

Question 4

density

Answer 4

the mass per unit volume of a material (divide object’s mass by the object’s volume)

Question 5

dependent variable

Answer 5

factor that changes as a result of changes in the other variables

Question 6

experiment

Answer 6

tests the effect of one thing on another using controlled conditions

Question 7

graph

Answer 7

visual display of information or data

Question 8

hypothesis

Answer 8

a possible explanation for a problem using what you know and observe

Question 9

independent variable

Answer 9

the variable you change to see how it will affect the dependent variable

Question 10

mass

Answer 10

a measurement of the quantity of matter in an object

Question 11

model

Answer 11

represents an idea, event, or object to help people better understand it

Question 12

scientific law

Answer 12

a statement about what happens in nature and that seems to be true all the time

Question 13

scientific method

Answer 13

an organized set of investigation procedures

Question 14

SI

Answer 14

International System of Units is a unit of measurement

Question 15

standard

Answer 15

an exact quantity that people agree to use to compare measurements

Question 16

technology

Answer 16

the application of science to help people

Question 17

theory

Answer 17

an explanation of things or events based on knowledge gained from many observations and investigations

Question 18

variable

Answer 18

a quantity that can have more than a single value

Question 19

volume

Answer 19

the amount of space occupied by an object (V = lwh)