Chapter 1

Question 1

Science begins with curiosity and often ends with _______.

Answer 1

discovery

Question 2

_______ is the use of knowledge to solve practical problems.

Answer 2

Technology

Question 3

Chemistry is the study of …

Answer 3

the composition, structure, properties, and reaction of matter.

Question 4

Natural Science is generally divided into three branches:

Answer 4

physical science, Earth and space science, and life science.

Question 5

The study of living things is known as ________.

Answer 5

biology

Question 6

An organized plan for gathering, organizing, and communicating information is called a _______.

Answer 6

scientific method

Question 7

A(n) _______ is information that you obtain through your senses.

Answer 7

observation

Question 8

A(n) _______ is a proposed answer to a question.

Answer 8

hypothesis

Question 9

What is the goal of scientific methods?

Answer 9

To solve a problem or to better understand an observed event.

Question 10

A(n) _______ _______ is a statement that summarizes a pattern found in nature.

Answer 10

scientific law

Question 11

Every scientific method begins with an observation.

True or False

Answer 11

False

Question 12

What are the three types of variables in a controlled experiment?

Answer 12

control, manipulated, and responding

Question 13

Scientific _______ make it easier to understand things that might be too difficult to observe directly.

Answer 13

models

Question 14

How does a scientific law differ from a scientific theory?

Answer 14

A scientific law describes an observed pattern in nature without attempting to explain it. The explanation of such a pattern is provided by a scientific theory.

Question 15

A(n) _______ _______ is a well-tested explanation for a set of observations or experimental results.

Answer 15

scientific theory

Question 16

_______ _______ is a way of expressing a value as the product of a number between 1 and 10 and a power of 10.

Answer 16

Scientific notation

Question 17

Scientific ________ makes very large or very small numbers easier to work with.

Answer 17

notation

Question 18

Which answer is correct for the equation (4 x 10^4m) x (3 x 10^3m)?

Answer 18

1.2 x 10^8 m^2

Question 19

Scientists use a set of measuring units called SI, or the ___________.

Answer 19

International System of Units

Question 20

The prefix giga- means _______.

Answer 20

billion

Question 21

The prefix centi- means _______.

Answer 21

hundreth

Question 22

The prefix kilo- means _______.

Answer 22

thousand

Question 23

The SI base unit for length is the _______.

Answer 23

meter

Question 24

The base unit for _______, or the quantity of matter in an object or sample, is the kilogram (kg).

Answer 24

mass

Question 25

_______ is the amount of space taken up by an object.

Answer 25

Volume

Question 26

The unit for pressure is the _______.

Answer 26

joule

Question 27

The SI base unit for electric current is the _______.

Answer 27

ampere (amp)

Question 28

The derived unit for frequency is the _______.

Answer 28

hertz

Question 29

_______ is a gauge of how exact a measurement is.

Answer 29

Precision

Question 30

_______ is the closeness of a measurement to the actual value of what is being measured.

Answer 30

Accuracy

Question 31

A(n) _______ is an instrument that measures temperature, or how hot an object is.

Answer 31

thermometer

Question 32

Water boils at ______ degrees Celsius.

Answer 32

100

Question 33

The normal temperature of the human body is _______ degrees Celsius.

Answer 33

37

Question 34

Water freezes at _________ degrees Fahrenheit.

Answer 34

32

Question 35

Water boils at _____ degrees Kelvin.

Answer 35

373

Question 36

Scientists can organize their data by using data ______ and _______.

Answer 36

tables, graphs

Question 37

A _______ _______ is a relationship in which the ratio of two variables is constant.

Answer 37

direct proportion

Question 38

How can scientists communicate experimental results?

Answer 38

Writing in scientific journals and speaking at conferences.