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Scientific method and lab safety
Scientific method and lab safety
26 terms
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review of method, safety, measurement
Flashcards
26 cards
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Questions
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Answers
1
What tool is used to measure length?
graduated cylinder
beaker
ruler
balance
2
In the water displacement method of finding volume, what should you do to the two numbers?
subtract
add
divide
multiply
3
A testable prediction is called a
inference
analysis
hypothesis
observation
4
To test the effect of studying on test scores, which group should study?
control group
neither control nor experimental group
experimental group
both control and experimental groups
5
The part of an experiment that serves as a standard for comparison is the
variable
constant
control group
hypothesis
6
Which of the following is NOT a lab safety procedure?
eating and drinking are permitted in the lab
Wear safety goggles
Clean the work area at end of lab
tell the teacher about broken glass and spills
7
A factor that does NOT change in an experiment is the
control group
dependent variable
constant
independent variable
8
If you raise the temperature, then enzyme activity is affected. What is the dependent variable
number of graphs you make
temperature
enzyme activity
how well you monitor temperature
9
The use of a drug to fight disease is an example of
controls
variables
technology
experimentation
10
Which prefix below is the
largest
?
milli
deci
deka
hecto
11
What tool is used to measure mass?
graduated cylinder
ruler
balance
beaker
12
Which of the following should be written in the IF, THEN format?
dependent variable
hypothesis
law
independent variable
13
5.41 x 10
2
is __________ in standard notation
.0541
54100
.00541
541
14
If a flower is 50cm and Marie measures it to be 51cm, 49 cm, and 49.5 cm, she is...
neither precise nor accurate
accurate and precise
accurate
precise
15
Theories tell _____ something occurs but laws tell ___ things occur.
why, how
how, how
why, why
how, why
16
Which of the following is an example of quantitative data?
There are 3 people in this room
The soil is black
The baby is small
The baby has blue eyes
17
The basic unit for volume in the SI, or International system of Units (metric system) is
liter
degree Celcius
meter
gram
18
What tool is used to measure volume?
scale
graduated cylinder
balance
ruler
19
The numbers of an item counted in an experiment are examples of
quantitative data
inferences
controls
qualitative data
20
What unit is used to measure mass?
milliliter
gram
centimeter
pound
21
A factor in an experiment that changes in response to the independent variable is the
independent variable
control group
dependent variable
constant
22
The purpose of many scientific investigations is to
make data agree with theories
change the natural world
influence public opinion
test a hypothesis
23
Where does the dependent variable go on a graph?
X-axis
in the title
y- axis
in the key
24
Which of the following is
always
true?
law
variables
hypothesis
theory
25
A scientist notices a worm moving away from light. This is an example of...
a conclusion
an inference
an observation
a hypothesis
26
Which item below is the best to use to measure volume?
ruler
balance
graduated cylinder
beaker