Answers2025-2026 Phillips Environmental Science A 2nd semesterTopic Test

Topic Test Answers

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1
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Which of the following statements about idea models is not true?

A
Idea models depict a concept.
B
Idea models are typically used to predict natural disasters.
C
Idea models are typically in the form of a graph or equation.
D
Idea models are used to show the relationship between variables.
2
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An independent variable is

A
directly changed by the experimenter.
B
manipulated by changes to the dependent variable.
C
a variable that is kept constant.
D
a variable that is used as a control.
3

It is important to wear proper protective equipment in lab even when not actively performing experiments because accidents can affect any researcher, even one not working on an experiment.

A
T
B
F
4

There is no difference between the question and hypothesis steps of scientific inquiry.

A
T
B
F
5

Which of the following is likely to be the most valid source of information about pollution?

A
a website supported by manufacturing companies
B
an internal report by the Environmental Protection Agency (EPA)
C
a website supported by environmental groups
D
a television news program
6

Judging and evaluating advertisements requires critical thinking because _______.

A
advertisements can contain confusing, misleading information
B
all advertisements contain false information
C
advertisers always want to convince consumers to buy unnecessary items
D
truth in advertising laws ensure the accuracy of information in advertisements
7

What is 1550 dm expressed in hectometers?

A
1550000 hm
B
155.0 hm
C
15.50 hm
D
1.55 hm
8

Which of the following is not an advantage of using the metric system?

A
The basic units of measurement are related to each other.
B
The units are based on multiples of ten.
C
The units are used internationally.
D
It was designed in France in 1791.
9

What is the main purpose of scientific models?

A
The main purpose of models is to have a physical object to which to refer.
B
The main purpose of models is to represent observations.
C
The main purpose of models is to study systems that no longer exist.
D
The main purpose of models is to gain a better understanding of the world.
10

Various pieces of safety equipment are used in the lab to provide protection against injury. Which of the following pieces of lab safety equipment is least likely to be used if proper eye goggles are being worn?

A
first aid kit
B
safety shower
C
eye wash station
D
fire extinguisher
11

Which of the following is an inference?

A
The flower is pink.
B
Vinegar has a pungent aroma.
C
A dog barks.
D
A cup with steam coming from it will be hot to the touch.
12

Many types of scientific equipment are used to perform different functions in the science lab. Which of the following combinations of equipment would be needed to bring one liter of water to 85°C?

A
graduated cylinder, balance, beaker and hot plate
B
graduated cylinder, beaker, thermometer and hot plate
C
test tube, thermometer, and Bunsen burner
D
test tube, electronic balance and hot plate
13

A scientific theory can never be disproven.

A
T
B
F
14

Which of the following is the SI unit used to measure temperature?

A
kilogram
B
liter
C
meter
D
Kelvin
15

The greatest difference in magnifying power is between _______.

A
dissecting microscopes and compound light microscopes
B
transmission electron microscopes and dissecting microscopes
C
scanning electron microscopes and transmission electron microscopes
D
compound light microscopes and scanning electron microscopes
16

Scientific models can never be changed.

A
T
B
F
17

How many significant figures are in the measurement 1.050 L?

A
1
B
2
C
3
D
4
18

Scientists best apply critical thinking in their work through _______.

A
the scientific method
B
observation
C
hypotheses
D
experimentation
19

Which of the following is not an example of critical thinking?

A
identifying several solutions to a problem
B
questioning source information
C
implementing the first solution to a problem identified
D
verifying source information
20

What is 150 mm expressed in decimeters?

A
1500 dm
B
15 dm
C
1.5 dm
D
0.15 dm

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