Holt Environmental Science Chapter 2 Tools of Environmental Science

Question 1

What essential characteristics does a good experiment have?

Accepted Answer

a control is used, a single variable is tested

Question 2

This consists of a series of steps used by scientists to identify and answer questions .

Accepted Answer

scientific method

Question 3

These could be positive or negative and must be explored before making a decision.

Accepted Answer

consequences

Question 4

A 3D model of a chupacabra is an example of a __________ model.

Accepted Answer

physical

Question 5

Before you can make a decision using a decision-making model, what step must you take?

Accepted Answer

all of these must be done

Question 6

The average mass of a penguin in a colony is an example of

Accepted Answer

mean

Question 7

This is a systematic process you can use to help you make decisions about environmental issues.

Accepted Answer

decision-making model

Question 8

A group of similar things that a scientist is interested in learning about is

Accepted Answer

a statistical population

Question 9

The final steps of the experimental method in their usual order are

Accepted Answer

draw conclusions-repeat experiment-communicate results

Question 10

A good hypothesis is more than a guess because it

Accepted Answer

is testable, makes logical sense, follows from what you know

Question 11

What step in the decision-making model are you taking when you consider a possible outcome?

Accepted Answer

exploring consequences

Question 12

The group that does not receive the experimental treatment in an experiment is the

Accepted Answer

control group

Question 13

This group does not receive the variable in an experiment.

Accepted Answer

control group

Question 14

What is the first thing you should do when making a decision?

Accepted Answer

gather information

Question 15

This is a testable explanation for an observation.

Accepted Answer

hypothesis

Question 16

A model that shows the correlation between the componenets of a system is a

Accepted Answer

conceptual model

Question 17

The group that receives the experimental variable is called the

Accepted Answer

experimental group

Question 18

The classification and collection of data that are in the form of numbers is called

Accepted Answer

statistics

Question 19

Considering what will add to our understanding of the natural world when making a decision...

Accepted Answer

scientific value

Question 20

Scientists use statistics to

Accepted Answer

analyze data

Question 21

In a scientific investigation, the number of objects or events being sampled should be

Accepted Answer

large so the whole population can be estimated

Question 22

Curiosity and imagination are important in science because they are

Accepted Answer

abilities in scientists that help expand our knowledge

Question 23

Information gathered by using the senses is known as

Accepted Answer

an observation

Question 24

Which of the following correctly lists the steps of the experimental method in order?

Accepted Answer

observe-hypothesize-experiment-communicate results

Question 25

Maps and charts are examples of

Accepted Answer

graphical models

Question 26

Three-dimensional models you can touch are referred to as

Accepted Answer

physical models

Question 27

Which step in the experimental method are scientists conducting when they photograph whales?

Accepted Answer

observing

Question 28

the factor of interest in an experiment is called the

Accepted Answer

variable

Question 29

The chance that an tornado will occur in Kansas this year is an example of a

Accepted Answer

risk

Question 30

If you are building a dam, what is an example of a question that addresses an economic value?

Accepted Answer

How many jobs will building the dam create?

Question 31

When it's unethical or impossible to conduct experiments, scientists test by examining

Accepted Answer

correlations

Question 32

Why are mathematical models important?

Accepted Answer

all of these explain why mathematical models are important

Holt Environmental Science Chapter 2 Tools of Environmental Science

Questions 32

Holt Environmental Science Chapter 2 Tools of Environmental Science

Questions 32