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Unit 1 Review
Unit 1 Review
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Flashcards
30 cards
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Questions
30
Answers
1
What type of observation or data describe something without using numbers?
experimental observations
quantitative
qualitative
data tables
2
The first step in the scientific method is usually
making an observation.
testing a hypothesis.
collecting data.
forming a hypothesis.
3
When using a fire extinguisher, the PASS method should be used. What does it mean?
Pull, Air, Smash, Swap
Pass, Aim, Squeeze, Sweep
Pass, Air, Shoot, Squeeze
Pull, Aim, Squeeze, Sweep
4
What is difference between scientific theory and law?
A theory explains why, a law predicts what will happen.
A theory is always proven wrong.
A theory predicts what will happen, a law explains why.
A theory is never based on evidence.
5
How many sig figs does 40.0 have?
0
3
2
1
6
The variable that is measured in an experiment is the
dependent variable.
control.
independent variable.
constant.
7
How many sig figs should be in answer? 4.02 cm * 6.340 cm * 5.1102 cm
12
3
5
4
8
After an investigation, what do scientists do with their results?
share them with their family
put them away for several years
communicate their results
hide them from other scientists
9
The dependent variable is always graphed on the
x-axis
y-axis
10
How many significant figures does the number 1003.0 contain?
2
5
4
3
11
Why should all experiments have a control group?
to make other scientists jealous
to increase the number of testing subjects
to increase the chances that your data supports hypothesis
to have something to compare the results to
12
Which term refers to the force with which gravity pulls on matter?
length
weight
volume
mass
13
Convert 273 km to mm
273,000
273,000,000
0.000000273
0.000273
14
Based on the bar graph, approximately how many students like blue?
15
10
25
23
15
Convert 82 μg to mg.
8200
.082
.0082
82,000
16
In the SI system, the prefix ______ means billion.
Centi-
Mega-
Kilo-
Giga-
17
On which axis does the inependent (manipulated) variable get graphed?
y axis
x axis
18
A series of logical steps that is followed in order to solve a problem is called the
scientific theory.
model method.
scientific method.
experimental process.
19
What quantity is being measured with a Liter?
length
volume
time
mass
20
How many sig figs are in the number 0.00817?
3
4
6
5
21
What term refers to the amount of matter in an object?
weight
density
volume
mass
22
The main branches of natural science are
life, physical, and earth.
physics and chemistry.
medicine and agriculture.
biology, zoology, and ecology.
23
What are the 2 branches of physical science?
anatomy and biology
physics and chemistry
geology and meterology
chemistry and botany
24
Write 4.23 x 10
-3
in standard form.
4230
42300
.0423
.00423
25
In the SI system, the prefix ________ means one hundredth.
centi-
milli-
nano-
deci-
26
Which type of graph is best for data that changes?
conversion chart
line graph
pie chart
bar graph
27
A hypothesis must be
testable.
experimental.
proven correct.
observed.
28
Science attempts to explain
why the earth is round.
the difference between a theory and a law.
if supernatural powers exist.
how nature works.
29
Which of the following quantities is being measured with a gram?
mass
length
volume
weight
30
How many variables should an experimenter test at one time?
ten
as many as possible
two
one
