Laboratory Tools and Safety Answers

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21
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An experiment looking at structures smaller than a cell would most likely employ a _______.

A
dissecting microscope
B
transmission electron microscope
C
scanning electron microscope
D
compound light microscope
22
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Which area of the physical activity pyramid can be most easily incorporated into an individual's everyday activities?

A
flexibility
B
lifestyle
C
aerobic
D
anaerobic
23

What are the two categories of observations?

A
qualitative and quantitative
B
direct and indirect
C
sensory and derived
D
measured and deduced
24

Where would the following activity BEST fit on the physical activity pyramid? Gardening

Question illustration
A
sedentary activities
B
anaerobic activities
C
aerobic activities
D
lifestyle activities
26

Question text not available

Answer not available
27

What was a result of creating rail standardization?

A
Railways were able to transport meat without spoilage.
B
Trains provided cars with pull-down beds for overnight travel.
C
Trains from different rail lines could use each other’s tracks.
D
Rail companies began to create their own styles of rails and tracks.
28

Describe how the meniscus is used to read volume measurements on a graduated cylinder.

Answer not available
29

Which of the following statements BEST explains why the same exercise program might conform to the principle of overload for one person but not for another?

A
Different individuals have different levels of physical fitness.
B
Physical activity only leads to increased health benefits when it is above normal levels.
C
Bodies adapt to increased physical demands placed upon them.
D
The same exercise programs always conform to the principle of overload.
30

Which step of scientific inquiry involves organizing and interpreting the data?

A
Experimentation
B
Analysis
C
Conclusion
D
Hypothesis
31

Adults need at least 1 hour and 30 minutes of vigorous-intensity aerobic activity per week for important health benefits.

A
T
B
F
33

Which best explains how railroad companies were able to standardize their timetables in 1883?

A
by combining into a single railway company
B
by working together voluntarily
C
by unionizing their labor forces
D
by complying with federal legislation
34

Which of the following pieces of laboratory equipment is not directly used to make measurements?

A
test tube
B
graduated cylinder
C
ruler
D
thermometer
35

Wellness is the struggle to keep all the components of health at their best possible levels.

A
T
B
F
36

An inference _______.

A
is a possible explanation for events using prior knowledge
B
explains if a hypothesis is or is not valid
C
is made independent of observation or prior knowledge
D
can be either qualitative or quantitative
37

How much physical activity should an adult have each week?

A
60 minutes per day, 7 days a week
B
30 minutes per day, 7 days a week
C
60 minutes per day, 5 days a week
D
30 minutes per day, 5 days a week
39

During the Second Industrial Revolution, which building material became one of the most important in the world?

A
brick
B
wood
C
stone
D
steel
40

What feature is common to all microscopes, and how is this feature related in the word "microscope"?

Answer not available

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