Chapter 1 Vocabulary

Question 1

Science

Answer 1

the method for studying the natural world

Question 2

Physics

Answer 2

a branch of science that involves the study of the physical world: energy, matter. and how they are related

Question 3

hypothesis

Answer 3

a possible explanation for a problem using what you know and have observed.

Question 4

Model

Answer 4

is a representation of an idea, event, structure, or object that helps people better understand it.

Question 5

scientific theory

Answer 5

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

Question 6

Scientific law

Answer 6

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

Question 7

dimensional analysis

Answer 7

a method of treating units as algebraic quantities that can be cancelled; can be used to check that an answer will be in the correct units.

Question 8

significant figures

Answer 8

the valid digit in a measurement are referred to as significant figures.

Question 9

Measurement

Answer 9

is a comparison between an unknown quantity and a standard.

Question 10

precision

Answer 10

the degree of exactness of a measurement

Question 11

accuracy

Answer 11

How well the results of a measurement agree with the “real” value.

Question 12

Independent variable

Answer 12

the factor that is manipulated during an investigation

Question 13

dependent variable

Answer 13

the factor that depends on the independent variable.

Question 14

line of best fit

Answer 14

the line in blue, drawn as close to all the data points as possible.

Question 15

linear relationship

Answer 15

the dependent variable varies linearly with the independent variable

Question 16

Quadratic Relationship

Answer 16

exists when one variable depends on the square of another

Question 17

inverse relationship

Answer 17

a hyperbolic relationship in which one variable depends on inverse of the other variable.