Chapter 1 Vocabulary Cards

Question 1

Bias

Answer 1

Occurs 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

Is a standard by which the test results can be compared.

Question 4

Density

Answer 4

Is the mass per unit volume of a material.

Question 5

Dependent variable

Answer 5

Its value changes according to the changes in other variables.

Question 6

Experiment

Answer 6

Tests the effect of one thing on another using controlled conditions.

Question 7

Graph

Answer 7

Is a visual display of information or data.

Question 8

Hypothesis

Answer 8

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

Is a measurement of the quantity of matter 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

Is 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

Standards that are universally accepted and understood by scientists throughout the world.

Question 15

Standard

Answer 15

Is an exact quantity that people agree to use to compare measurements.

Question 16

Technology

Answer 16

Is the application of science to help people.

Question 17

Theory

Answer 17

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

Question 18

Variable

Answer 18

Is a quantity that can have more than a single value.

Question 19

Volume

Answer 19

The amount of space occupied by an object.