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Scientific Method Review Flashcards | StudBud
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Scientific Method Review
Scientific Method Review
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1
How do scientists make sure that the independent variable caused the result?
use controls and constants
use multiple dependent variables
use multiple independent variables
record data in a data table
2
What is the dependent variable: The less light something is exposed to the less bacteria will grow on it.
the item being exposed
the amount of bacteria growth
the amount of light exposure
no dependent variable
3
A possible answer or prediction to a testable question is called a _______.
guess
hypothesis
law
theory
4
What do you call the thing that the scientist deliberately changes?
independent variable
dependent variable
experimental group
control group
5
Testable or Not Testable: Are opossums more active at night than in the day?
not testable
testable
6
What do you call the group in an experiment that DOES receive the independent variable?
random sample
variable group
experimental group
control group
7
What amounts of caffeine were tested?
67.8, 80.5, 90.8, 98.3
65, 68, 72, 66
96, 99, 101, 97
0, 95, 190, 285
8
If your experiment proves your hypothesis wrong then the experiment is a failure.
true
false
9
Why do scientists do multiple trials in an experiment?
to look for different dependent variables
to determine if the results are reliable
because science is super fun!
so they can test mulitple variables
10
Things kept the same throughout an experiment are called___.
variables
control group
constants
experimental group
11
Testable or Not Testable: Will the number of hours slept have an affect on memory?
testable
not testable
12
Testable or Not Testable: The best brand of dog food is Purina Dog Chow.
Testable
Not testable
13
How many trials did the scientist do?
1
4
6
5
14
How do scientist make sure that their data is reliable?
test multiple independent variables
only do experiments in the laboratory
apply dependent variables
do multiple trials
15
Proven or Disproven? If you increase your caffeine consumption you will increase your heart rate.
proven
disproven
16
What is the dependent variable?
amount of caffeine
age of person
heart rate
blood pressure
17
What was the independent variable?
amount of caffeine
average heart rate
heart rate
blood pressure
18
Testable or Not Testable: Are hamburgers better for you than hot dogs?
Testable
Not Testable
19
What do you call the group that DOES NOT receive the independent variable?
students
control group
experimental group
variables
20
What is a constant that this experiment would need?
heart rate in beats per minute
age of person
amount of caffeine
how many pets the person has
21
The thing you are measuring in an experiment, also known as the result, is called ___.
dependent variable
control
independent variable
constant
22
You're testing if the amount of oxygen in water affects crab population. What would be a constant?
the amount of crabs
the data
amount of oxygen
breed of crab
23
What is the independent variable: The more salt you put in water the higher things will float.
the amount of salt in the water
the height that objects will float
the water
the amount of salt water you use
24
What testable question is answered by this data table?
Does heart rate affect the amount of caffeine you consume?
Does caffeine affect a person's heart rate?
Does stress affect your heart rate?
Does caffeine have an affect on blood pressure?
25
Anything that changes in an experiment is called:
control
variable
device
constant
