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The Scientific Method and Variables
The Scientific Method and Variables
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#Scientific Method and Variables
Flashcards
30 cards
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Practice quiz
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Host live
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Questions
30
Answers
1
The group that is not changed in an experiment and is used to compare to another group is a . . .
independent group
control group
experimental group
valid group
2
Which of these is a qualitative observation?
The insect has a fuzzy abdomen.
The insect has six legs.
The insect has three body parts.
The insect has two pairs of wings.
3
A variable that is kept the same is . . . .
Controlled
Independent
Dependent
4
The more times an experiment is repeated, the more __________ it is.
testable
valid
repeatable
invalid
5
I will test 3 brands of paper towels to see how much water each soaks up. The ind. variable is
the brands of paper towels
the amount of water spilled
the amount of water each soaks up
6
If I expose plants to recycled air instead of fresh air, then they won't grow as well. This is
data
a conclusion
a hypothesis
an experiment
7
Which of the following is NOT a good reason for a scientist to use a scientific model?
It could be expensive to use the real thing.
The real thing might be too small.
Using the real thing might be easier.
Using the real thing could be dangerous.
8
I will add different colors of food coloring to vases each containing 3 carnations. This is
a hypothesis
an experiment
a conclusion
data
9
Which of the following is a way to show the results of an experiment?
all of these
a chart
a graph
a report
10
Use 4 different detergents to see which will clean grass stains from fabric the best. Dep. Var?
Size of stains at the beginning of the experiment.
Size of stain left after washing.
Kind of detergent.
11
I wonder if a goldfish would grow faster eating dried seaweed or regular fish food? This is
a hypothesis
background research
a question
a conclusion
12
The last step in the Scientific Method is . . .
Writing a Conclusion
Collecting Data
Analyzing Data
Conducting an Experiment
13
Results of an experiment that are recorded are called . . .
conclusions
data
observations
models
14
A good hypothesis must be . . .
testable
inferred
repeated
valid
15
An organized process or set of steps used by scientists to find an answer to a question is called . . .
The Experimental Group
The Scientific Method
An experiment
An observation
16
Which of these would NOT make an experiment more valid?
having a control group
repeating the experiment and averaging the data
using a large number of objects to experiment with
testing 2 independent variables at the same time
17
Use 4 different detergents to see which will clean grass stains from fabric the best. Con. Var?
Kind of detergent.
Size of stains at the beginning of the experiment.
Size of stain left after washing.
18
I will see which of 3 brands of paper towels will soak up the most water. A controlled var. is
The brand of paper towel.
The amount of water soaked up.
The amount of water spilled.
19
The toad jumped 15 in./min., the frog 27.5 in./min., and the cricket 41 in./min. This is . . .
a hypothesis
data
an experiment
a conclusion
20
Using observation data and background knowledge to determine what is happening or has just happened is to . . .
infer
observe
predict
classify
21
Something that is not experimented on but is used to compare what is experimented on is called
a control
a theroy
a variable
data
22
An educated guess which is usually phrased as an if/then statement is a . . .
hypothesis
model
theory
conclusion
23
Exposing skin to the sun for a long period of time causes the skin to wrinkle. This is . . .
a hypothesis
a conclusion
an experiment
a question
24
The most important rule when conducting an experiment is . . .
to use only 1 controlled variable
to test only one independent variable at a time
to ask a question
to use only one subject or object
25
A variable that may change when another variable changes is . . . . (the one you measure).
Independent
Controlled
Dependent
26
A variable that the scientist chooses to change on purpose is . . .
Dependent
Independent
Controlled
27
Use 4 different detergents to see which will clean grass stains from fabric the best. Ind. Var?
Kind of detergent.
Size of stains at beginning of experiment.
Size of stain left after washing.
28
I will test 3 brands of paper towels to see which soaks up the most water. The dep. var. is
The amount of water spilled
The amount of water soaked up.
The brand of paper towel.
29
The second step in the scientific method is to . . .
ask a quesiton
do an experiment
do background research
construct a hypothesis
30
A hypothesis that is supported by a lot of data and many experiments is called a . . .
scientific rule
model
control
theory
