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Unit 1: scientific skills test
Unit 1: scientific skills test
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1
How is 0.00074 written in scientific notation?
0.74 X 10-3
69 X 10-5
7.4 x 104
7.4 X 10-4
2
How many significant figures wil the answer to the calculation 34.234 x 23.34 have?
2
4
3
5
3
What type of data is best displayed as a line graph?
data that shows a part of a whole
comparing similar data for several individual items or events
data that shows a continuous change
the data doesn't matter
4
How are science and technology related?
technology is a branch of science
science is a branch of technology
science and technology are not related
advances in science may lead to advances in technology and vice versa
5
What type of graph is represented by Figure 1-1?
none of the answers
bar graph
circle graph
line graph
6
_________________________ are the factors in an experiment that can be changed
hypotheses
controls
constants
variables
7
An organized set of procedures describe the
problem
hypothesis
experiment
scientific method
8
How do scientist communicate the results of investigations?
by exchanging e-mails
by giving talks at scientific conferences
by publishing articles in scientific journals
all the answers
9
Which of the following clocks offers the most precision?
a clock with a hand measuring the hour, hand measuring minutes & seconds
a clock with only one hand to measure the hour
a clock with only one hand to measure the minutes
a clock with a hand to measure the hour and a hand to measure the minutes
10
What is the volume in the graduated cylinder?
26 ml
24 ml
30 ml
0.6 ml
11
What system of units do scientist use for measurements?
The number system
The American system
the SI system
The English system
12
Where isD on the ruler in cm?
530 cm
5.3 cm
5.5 cm
53 cm
13
This variable is the actual data collected during an experiment
independent
constant
dependent
control
14
The composition of mixture of gases that makes up the air of our atmosphere is best represented on what kind of graph?
bar graph
line graph
circle graph
variable graph
15
Convert 42
o
C to Kelvin
279o C
273oC
107oC
315oC
16
The information collected during an experiment is called _______________
data
guesses
variables
laws
17
A hypothesis must be proposed in a way that
ensures that the experiment will work
enables the hypotehsis to be proven or disproven
doesn't interfere with previous hypotheses
ensures that the experiment will be proven true
18
This variable in an experiment is the one being deliberately changed by a scientist
constant
control
independent
dependent
19
An explanation based on many observations supported by experimental results is a
none of these
scientific theory
scientific law
hypothesis
20
What is a system of knowledge and the methods used to find that knowledge?
measurement
curiosity
science
technology
21
In a controlled experiment,
one variable is changed while all others remained fixed
the outcome is controlled
results are obtained by computer models
one variable is fixed while all the others are changed
22
An ideal, event, or object that represents something that is being explained is a
model
experiment
hypothesis
problem
23
The ___________ variable is the part of the experiment that is affected by the independent variable.
constant
independent
dependent
control
24
Perform the following calculation and express the answer in scientific notation: 0.00084/34
2.5 x 105
2.5 x 10-5
1.8 x 105
1.8 x 10-5
25
The __variable is the part of the experiment that is tested; the part that is changed by the person doing the experiment
dependent
independent
control
constant
26
Perform the following calculation and express your answer in scientific notation: (8.2 x 10
-3
m) x (1.5 X 10
8
m)
12 X 105 m
12 x 10-5 m2
1.2 X 106 m2
12 x 106 m2
27
One-thousandths expressed by what prefix?
centi-
nano-
milli-
kilo-
28
What is the relationship between two variables if the product of the variables is constant?
there is no relation
inverse proportion
direct proportion
indirect proportion
29
What is the relationship in which the ratio of the manipulated variable and the responding variable is constant?
direct proportion
interdependent
inverse proportion
slope
30
Where is G in mm on the ruler?
120 mm
12 mm
12 cm
12 inches
31
Physical science is the study of the relationship between?
space and time
matter and energy
forces and energy
living things and the environment
32
What is the volume of the toy dinosaur?
10.4 ml
0.8 ml
5.6 ml
4.8 ml
33
An important goal of scientist is to use ______________ to learn about the natural world.
technology
goals
evidence
signs
34
Timers at a swim meet used four different clocks to time an event. Which recorded time is the most precise?
65.3 s
65.32 s
65.321 s
65 s
35
What is the mass on the triple beam balance?
37.3 g
7.3 g
33 g
137 g
36
What are the major branches of natural science?
chemistry and physics
astrology, chemistry, and geology
astronomy, geology, and life science
Earth and space science, life science, and physical science
37
What type of graph would be the best to use to compare levels of arsenic contamination in 8 water wells?
a line graph
a variable graph
a bar graph
a scatter plot
38
The two main areas of physical science are
chemistry and biology
physics and chemistry
physics and biology
psychology and chemistry
39
The type of graph used to show how a part of something relates to the whole is which of the following?
line graph
circle graph
bar graph
scatter plot
40
The scientific method or process of science starts with a _____________
experiment
problem
hypothesis
all of the answers
41
In which step of the scientific method is information gathered through the senses?
revising hypotheses
drawing conclusions
analyzing data
making observations
42
__________________ is the closeness of a measurement to the actual value being measured
accuracy
true value
precision
variablity
43
How many centimeters are in 3.5 km?
35,000 cm
350 cm
3500 cm
350,000 cm
44
The purpose of the "control" in an experiment is
to form a conclusion based on the data gathered in the experiment
to gather more data by repeating the experiment over and over
to show the effect of the variable being tested
serves as a comparison because the experimental factor has been removed
45
The three values 67.890 cm, 12.345 km, and 13. 646 m have the same number of _________________
scientific notation
significant figures
measurement
value
46
Write the following scientific notation in long form: 8.9 x 10
4
g
0.89 g
0.0089 g
8900 g
89000 g
47
What are the building blocks of all matter?
forces
magnetic fields
atoms
kinetic and potential energy
48
A ___________ is a possible answer to a question that can be tested
hypothesis
model
expriment
variable
49
What is a statement that summarizes a pattern found in nature?
a hypothesis
a scientific theory
a fact
a scientific law
50
Which graph is most useful for showing the relationship between independent & dependent variables that change over time?
pictograph
line graph
circle graph
bar graph
51
____________________ is a system of knowledge, while ______ is the practical application of that knowledge
science; technology
chemistry; physics
technology; science
physics, chemistry
52
A measurement must include what?
only a unit
only a number
a measurement can be anything
a number and unit
53
The _________ is the part of the experiment that is not being tested and is used for comparison.
independent variable
control
constants
dependent variable
54
A ______________ is a statement that summarizes a pattern found in nature.
variable
scientific theory
hypothesis
scientific law
55
The ability to reproduce results is an important part of any
scientific law
experiment
hypothesis
scientific theory
56
In a controlled experiment, how many variables can be tested at a time?
one
as many as needed
depends on the experiment
none
57
Which of the following conversion factors would you use to change 35 kilometers to meters?
1 km/ 100 m
1000 m/ 1 km
100 m/ 1 km
1 km/ 1000 m
58
Scientists make ________________ to help them make a hypothesis or collect data during an experiment
guesses
observations
experiments
hypotheses
59
Why are scientific models important?
They visualize things that are very complex, very large, or very small
They prove scientific theories
They make it hard to understand things
They never change
60
In the graph, how many meters of precipitation, were recorded during Jan?
18 cm
0.18 m
18 m
1.8 m
61
This part of the experiment shows the effect of the one variable being tested
independent group
experimental group
control group
dependent group
