A scientific model is a

representation of a real event or object.

a description of a natural event.

An important science skill is critical thinking. This means

thinking logically to solve a problem.

What do scientists who do pure science do?

They do experiments to find out about the world.

Accuracy is judged by

how close a value is to the true value.

The main branches of natural science are

life, physical, and Earth science.

A scientific theory is an explanation that

has been tested by many observations.

Pure science is best defined as the

continuing search for new knowledge.

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1- Introduction to Science

42 termsStudBud Administration216 plays

Unit 1: The nature of science

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Questions 42

Answers

1
A precise measurement is one that
contains at least three significant figures.
is close to the true value.
is as exact as possible.
contains the correct number of significant figures.
2
Scientific theories can be changed or replaced when
new technology is invented.
scientists decide to work on different problems.
scientists decide to work on different problems.
new discoveries are made.
3
A scientific model is a
representation of a real event or object.
new theory that takes the place of an incorrect one.
small building used to conduct experiments.
mathematical statement of a theory.
4
What are our schools colors spelled backwards?
der & etihw
egnaro & eulb
der & eulb
knip & elprup
5
A measurement that is accurate is one that
contains five decimal places.
is as exact as possible.
contains at least four significant figures.
is close to the true value.
6
A tool used by physicists to smash atoms is a
spectroscope.
radio telescope.
stopwatch.
particle accelerator.
7
A tool used to break light into a rainbowlike spectrum is the
telescope
spectroscope
radio telescope.
particle accelerator
8
Which type of graph best shows data that are parts of a whole?
pie chart
all of the above
bar graph
line graph
9
Which unit is used to measure the mass of a computer?
kilogram
meter
mol
kelvin
10
The two main branches of science are
natural and physical science.
natural and social science.
biological and Earth science.
physics and chemistry.
11
Which tool would a scientist use to find information on the structure of an atom?
telescope
radio telescope
spectroscope
particle accelerator
12
After formulating a question, the next step of the scientific method is
Blue and Orange
to state a conclusion.
to test a hypothesis.
to research and collect data.
13
Technology can best be defined as
the use of lenses and microscopes.
applied science.
new inventions.
science that uses computers.
14
Critical thinking
All of the above
is based on facts.
uses observations.
uses logic.
15
The speed of light is approximately 3 x 10⁸ m/s. How is this written in scientific notation?
300,000 m/s
300,000,000 m/s
30,000,000 m/s
3,000,000 m/s
16
The decimal equivalent of 10–2 is
100
0.01
0.1
10
17
A loaf of bread weighs 1,362 g. The weight in kilograms is
1,362 kg.
0.01362 kg.
0.1362 kg.
1.362 kg.
18
Scientists test a hypothesis by
designing models.
formulating questions.
doing experiments.
drawing conclusions.
19
A scientific law is
the conclusion of a scientific experiment.
a description of a natural event.
the same as a hypothesis.
an explanation of a scientific observation.
20
An important science skill is critical thinking. This means
thinking logically to solve a problem.
discovering the shortcomings of others.
testing a hypothesis during an experiment.
knowing when something is very important.
21
What do scientists who do pure science do?
They build faster and more powerful computers.
What do scientists who do pure science do?
They develop new uses for scientific knowledge.
They do experiments to find out about the world.
22
SI is considered a consistent system because it
has seven base units.
is used worldwide.
dates back to 1795.
uses derived units.
23
Accuracy is judged by
None of the above
the precision of the tool used for measurement.
the reputation of the scientist.
how close a value is to the true value.
24
The first step in the scientific method is usually
making an observation.
collecting data.
testing a hypothesis.
forming a hypothesis.
25
What is the area of a room that is 4 x 10² cm long and 2 x 10³cm wide?
8 x 105 cm2
8 x 103 cm2
8 x 107 cm2
6 x 103 cm2
26
Scientific Method
are used to find and evaluate possible answers to problems.
All of the above
use critical thinking to solve scientific problems.
are a general description of scientific thinking.
27
Which of the following shows 0.0000043 g?
4.3 x 107 g
4.3 x 10-6 g
4.3 x 106 g
4.3 x 10-7 g
28
The main branches of natural science are
biology, zoology, and ecology.
physics and chemistry.
life, physical, and Earth science.
medicine and agriculture.
29
Which graph best shows a change in data over time?
Line
Bar
Pie
All of them
30
Maria is 123 centimeters tall. Her height in meters is
12.3 m
0.123 m
0.0123 m
1.23 m
31
Which unit is used to measure the height of a bookcase?
meter
kilogram
mole
kelvin
32
The sample contained the same number of pennies for which two years?
1988 and 1992
1994 and 1997
1994 and 1998
1988 and 1991
33
For a scientific theory to be valid, it must allow you to
form a hypothesis.
obtain new results each time.
perform experiments.
make predictions
34
A scientific theory is an explanation that
predicts what will happen.
has been tested by many observations.
a scientist has tested with an experiment.
has been published in a journal or book.
35
According to the graph above, how long does it take this car to travel 270 kilometers?
6 hours
9 hours
12 hours
15 hours
36
Which of the following is not a branch of biology?
medicine
ecology
geology
botany
37
Pure science is best defined as the
study of the makeup of living things.
continuing search for new knowledge.
application of scientific knowledge.
use of science to solve human problems.
38
Which of the following is equal to 5,800,000,000 cm?
5.8 x 109 cm
58 x 107 cm
58 x 109 cm
5.8 x 108 cm
39
Most scientific questions are developed from
research.
investigation
observations
forming a hypothesis
40
Which type of graph best shows a comparison of several items or events?
line graph
pie chart
All of the above
bar graph
41
(5.2 x 10⁶) x (5.0 x 10³) =
2.6 x 106
2.6 x 109
2.6 x 108
2.6 x 1010
42
According to the graph, for which year was the smallest number of pennies found?
1990
1988
1991
1989

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