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JA Experimental Design Flashcards | StudBud
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JA Experimental Design
JA Experimental Design
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Answers
1
A beaker measures the mass of an object
False
True
2
An observation can be made with your
ears
nose
eyes
all of the above
3
A factor that could change in an experiment is known as a(n)
variable
constant
response
hypothesis
4
The variable that changes because of the other variables in an experiment.
dependent
controlled
independent
5
Repeating an experiment makes it more reliable
False
True
6
In an experiment, only one thing should be changed at a time. Everything else should be CONSTANT.
False
True
7
Which of the following explains WHY something in the natural world occurs?
Law
Inference
Theory
Observation
8
This must be done before a hypothesis is formed
experiment
analyze
conclusion
research
9
How must data be analyzed
after 24 hours
quickly
1 time
critically or carefully
10
Lisa investigates the effect that air temp. has on the heartbeat of humans. Which would be the independent variable?
temperature
heartbeat
sunlight
environment
11
The first thing you should do if there is a lab fire is tell the teacher.
true
false
depends
I have no idea
12
A triple beam balance and a digital scale measures this
length
volume
mass
distance
13
In his garden, Mica notices that plants in the shade do not grow as much as those in the sun. This is known as a(n)...
testable hypothesis
scientific theory
observation
conclusion
14
The group that does not receive the experimental treatment in an experiment
experimental group
control group
15
What is the acronym that is helpful when using a fire extinguisher properly?
P.A.S.S
P.U.S.H.
P.U.M.P.
P. A. N.I.C.
16
The volume of a liquid is measured in
grams
loudness
milliliters
meters
17
How many independent variables should a controlled experiment contain?
4
2
3
1
18
R. does an experiment to find if increased UV radiation increases the number of freckles on a person. The dependent v is
wrinkles
UV radiation
amount of sunlight
freckles
19
Where does the independent variable go on a bar or line graph?
y axis
x axis
20
How is an graduated cylinder different from a beaker?
a GC is used when you graduate and are an official scientist
a GC is used for heating chemicals
a CG is used for precise measurements
a GC is used for stirring chemicals
21
Numerical data that is collected in an experiment is know as
Quantitative
Qualitative
22
A THEORY is an explanation of WHY things or events happen based on observations and investigations.
False
True
23
A ratio of equivalent values is called a...
variable
unit
conversion factor
standard notation
24
Which of the following occurs in the first step of the Scientific Method?
an experiment is conducted
A conclusion is formed
a question is asked
a hypothesis is stated
25
Data that contains descriptive information
Qualitative
Quantitative
26
An example of qualitative data
570 g
34 cm
27mph
brown, dry, brittle
27
The purpose of this group is to act as the comparison-to compare changes to
control group
experimental group
