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Scientific Method Flashcards | StudBud
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Scientific Method
Scientific Method
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1
Planaria (type of worm) is affected by the presence of light. What is the IV?
Same number of planaria
No light
Presence of light
Movement towards or away from light source
2
Different pH levels may affect the rate of tooth decay. What is the IV?
Same type of tooth
Tooth's mass (or weight)
Neutral pH
pH 2, 4, 9, and 12 (diff. pH levels)
3
High salt diet is linked to heart disease. In an experiment, what is the DV?
Type of food
Amount of salt in food
Blood pressure measurement
Amount of water
4
Different pH levels may affect the rate of tooth decay. What is the Control?
Same type of tooth
Tooth's mass (or weight)
pH 2, 4, 9, and 12
Neutral pH
5
Different pH levels may affect the rate of tooth decay. What is the DV?
Tooth's mass (or weight) / amount of decay
pH 2, 4, 9, and 12
Same type of tooth
Neutral pH
6
Which of the following is the first step of the Scientific Method?
High levels of Vitamin C causes an increase in cancer cell #
If Vitamin C levels are high, chemotherapy is less effective
Cancer patients should avoid citrus during treatment
Do certain food interfere with chemotherapy?
7
Is seed germination affected by overcrowding? What is the Dependent Variable?
one seed planted in each pot
number of seeds planted in a pot or soil
type of seed
the number of seeds that germinated or grew
8
Is seed germination affected by overcrowding? What is the Independent Variable?
number of seeds planted in a pot or soil
one seed planted in each pot
the number of seeds that germinated
type of seed
9
It's hypothesized increased atm. pollution is linked to salamander pop. reduction. What is DV?
Salamander species
Amount of pollution
Salamander pop. size
Type of pollution
10
In the U.S., skin cancer occurs on the left side of face at higher rate. Best research source?
Scientific Journal on Disease
Newspaper
Wikipedia
Biology textbook
11
What is the comparison group to show if the IV caused any changes in an experiment?
Dependent variable
Control group
Independent variable
Experimental group
12
Is seed germination affected by overcrowding? What is the Control Group?
number of seeds planted in a pot or soil
type of seed
one seed planted in each pot
the number of seeds that germinated
13
High salt diet is linked to heart disease. In an experiment, what is the IV?
Type of food
Amount of salt in food
Blood pressure measurement
Amount of water
14
Alcohol concentration in cleaning product may affect bacterial reproduction. What is the IV?
amount of alcohol in cleaning product
growth rate of bacteria
size of bacterial colony
no alcohol used
15
Is seed germination affected by overcrowding? Which is NOT a Constant in the experiment?
same type of plant (seed)
number of seeds
amount of sunlight and water
size of planting pot/container
16
Every experiment will need a _______ for valid results. Pick the best answer.
Control
Constants
Independent variable
Dependent variable
17
If you want credit for work, what should you do? (think of Alfred Wallace & Rosalind Franklin)
Publish with a group
Money, money, money
Publish first
Analyze the results accurately
18
Alcohol concentration in cleaning product may affect bacterial reproduction. What is the DV?
no alcohol used
non-alcoholic cleaning products
size of bacterial colony
amount of alcohol in cleaning product
19
This statement, "plants will grow at faster under green light than white light" is a .......
Conclusion
Hypothesis
Experimental variable
Constant
20
Planaria (type of worm) is affected by the presence of light. What is the Control?
No light
Presence of light
Number of planaria
Movement towards or away from light source
21
Planaria (type of worm) is affected by the presence of light. What is the DV?
Same number of planaria
Movement towards or away from light source
Presence of light
No light
