A biologist reported success in breeding a hybrid. Other biologists will accept this if...

other researchers can replicate it

An experiment is invalid if...

contains conclusions not backed by data

a logical interpretation of data

are observations that happen every time

are hard to change but can be modified

Which of the following is a quantitative observation:

There are over thirty people in there

In trying a new vaccine on 100 chickens do you...?

vaccinate 50, not vaccinate 50 and then expose all

Put the steps of the Sci Method in correct order...

question, hypothesis, experiment, analyze data, conclusion

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Mrs. Lane's Introduction Test Review

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#hypotheses #theories #laws #experimentaldesign #observations #inferences #scientificmethod #introductionunit #ninthgrade

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Questions 30

Answers

1
A biologist reported success in breeding a hybrid. Other biologists will accept this if...
there was a control
other researchers can replicate it
research
offspring are given a science name
2
An experiment is invalid if...
contains conclusions not backed by data
Another experimenter can recreate the results
The sample size yielded a lot of data
conclusions don't verify the hypothesis
3
You let your friend dye your hair and when you rinse it you see it is bright pink. This is an
experiment
inference
independent variable
observation
4
A student’s experiment showed that ants move away from light. This statement is...
conclusion
hypothesis
prediction
inference
5
The observations or measurements collected during an experiment
research
theory
law
data
6
An inference is
a statement of how something looks or feels
a measurement
using your senses to gather info
a logical interpretation of data
7
A hypothesis...
can not be proven wrong
needs to be testable
something proven correct
something you know the answer to
8
Why do we gather data during an experiment?
to come up with a conclusion
to write our hypothesis
to design a control
to make graphs
9
The only difference between the control and the experimental group is?
Independent variable
dependent variable
change in temperature
time
10
Laws...
are observations that happen every time
are the highest rule to follow
not as important as theories
explanations backed by evidence
11
First step scientists must do is...
Question
Research
Collect Data
create an experiment
12
Using data from an experiment of how fertilizer affects plants, what is the DV?
temperature
plant height
fertilizer
light
13
How do you validate an experiment?
test multiple variables
Use a much larger sample size
keep a very small privileged test group
only do it once
14
What is written as an if...then... statement?
controlled experiment
hypothesis
conclusion
independent variable
15
the group or factor that experiences no change and must remain constant is the
dependent variable
control group
independent variable
experimental group
16
Theories...
never can change
are hard to change but can be modified
you need to experiment to draw a conclusion
can change easily
17
Theory is...
educated guess
universal observation
explanation backed by evidence
scientific fact
18
Conclusions should be based on?
bias
data from an experiment
the hypothesis
a small sample size to ensure no mistakes were made
19
Experiment: 3 different cultures of the bacteria grown under different temps. What was the IV?
length of experiment
temperature
reproduction rate
bacteria
20
term that describes what is expected to happen every time under a particular set of conditions
scientific law
scientific theory
scientific inquiry
scientific hypothesis
21
Which of the following is a qualitative observation:
I have two green eyes
I have three kids
My hair is multiple colors
Mrs Lane is always 29 years old
22
Which of the following is a quantitative observation:
Mr. Pegula is older than me
There is way too many people in a certain class
There are over thirty people in there
The room smells like lavender
23
A control group is...
is given the drug or manipulated
makes your experiment more complex
in not necessary
used to make a comparison
24
In trying a new vaccine on 100 chickens do you...?
vaccinate all 100 and expose all to the disease
vaccinate all 100 and expose half to the disease
vaccinate 50, not vaccinate 50 and then expose half
vaccinate 50, not vaccinate 50 and then expose all
25
How do you validate an experiment
only do it once
make your data fit your hypothesis
do it many more times
make your hypothesis fit your dat
26
How many independent variables should there be in a well-designed experiment?
1
2
infinite
0
27
Observations that deal with a number or amount?
infererences
quantitative
operational
qualitative
28
Put the steps of the Sci Method in correct order...
question, analyze data, hypothesis, experiment, conclusion
hypothesis, experiment, conclusion, analyze data, question
question, hypothesis, experiment, analyze data, conclusion
hypothesis, question, experiment, analyze data, conclusion
29
A well-tested explanation for a wide range of observations or experimental results is called
scientific law
scientific inquiry
scientific theory
scientific hypothesis
30
Any factor that can affect the outcome of an experiment is called a
hypothesis
conclusion
variable
control group

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