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Nature of Science Flashcards | StudBud
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Nature of Science
Nature of Science
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Basic scientific method for Biology
Flashcards
30 cards
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Practice quiz
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Host live
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Questions
30
Answers
1
Exposing plants to more light will increase plant growth. This would be a good....
Outcome Dependent variable
Hypothesis
Question/Problem
Tested Independent variable
2
If I replace the battery in my car, then my car will get better gas mileage. Correctly identify the variables.
Outcome Dependent - Then the result "better gas milage.
Tested Independent variable - Then the result "better gas milage."
Tested Independent - If "I change the battery ."
Outcome Dependent - If "I change the battery."
3
This is when you state whether if the hypothesis was supported by your data, report your errors, and what you do next.
Conclusion
Question/Problem
Procedure
Analyze data on a graph
4
Scientific knowledge is constantly being changed and updated as more scientists change their opinions.
False
True
5
You are testing DIFFERENT amounts of fertilizer to see they affect plant growth. The variable that is being tested?
dependent variable
independent variable
constant variable
control variable
6
For a controlled experiment to be reliable you must conduct multiple trials.
True
False
7
What kind of science model is a Punnett Square
physical model
conceptual model
mathematical model
computer model
8
Which statement BEST describes the difference between a scientific theory and law?
A scientific law is based upon the opinion and scientific theory is fact
A scientific theory is based upon the opinion and scientific laws are fact
A scientific law explains a phenomenon, a scientific theory describes
A scientific theory explains a phenomenon, a scientific law describes
9
The steps of the scientific method..
must all be used in every scientific investigation.
often start with a question.
always results in the development of a theory.
must always be used in the same order.
10
The outcome that is measured at the end of experiment.
controlled variable
independent variable
dependent variable
11
Hypothesis ALWAYS includes the tested independent variable and the outcome dependent variable.
True
False
12
How many independent variables should be tested in an experiment?
1
3
2
As many as necessary
13
What is an outcome dependent variable in controlled experiment?
The results that you measure at the end of the experiment
The variable that is deliberately changed.
The variable that changes in response to the tested independent variable.
The variables that must remain the same to ensure the outcome is fair.
14
What is the independent variable
The outcome
When you hold something constant
The variable measured
The variable being tested and changed
15
What is an example of a hypothesis (prediction)?
The sugar had a mass of 15 grams.
oxygen produced by the plant decreased as the amount of light decreased.
Increasing the temperature will increase the rate of a chemical reaction
The metal was shiny and brittle.
16
All scientific research follows the same scientific method process.
False
True
17
What kind of scientific model represents a systems of ideas?
mathematical model
conceptual model
physical model
computer model
18
Why are scientific theories rarely discarded and
more likely
to be modified and changed with new evidence?
the data and evidence used to support the theory do not change
scientists are never wrong
Scientists often change their opinions
the data supporting theories are verified through replication by others
19
Theories can be modified, but laws are permanent
True
False
20
If I brush my teeth every day, then I will not develop cavities. Correctly identify the variables.
Outcome Dependent - Then the result "not develop cavities."
Tested Independent - If "I brush my teeth."
Outcome Dependent - If "I brush my teeth."
Tested Independent variable - Then the result "not develop cavities."
21
In this science experiment, what is the independent variable that you tested (changed)?
The type of container
The volume of the water
The color of the food dye
The temperature of the water
22
How can the results of your experiment be replicated?
you conduct multiple trials of your experiment
verify that only one tested variable was used in the experiment
compare your results to other experiments to see which process is better
other scientist to conduct the exact same experiment
23
Select the correctly written hypothesis
If you treat dogs well they will be friendly.
If you train dogs more they might be better.
Dogs are friendly
What happens if you train dogs?
24
How would using different amounts of light effect the plant's growth. What is the tested independent variable?
Amount of Light
The type of plant
The amount of Soil
Plant growth
25
What are the two variables always included in a hypothesis or problem statement?
tested independent
outcome dependent
tested dependent
outcome independent
26
Why did our model of atoms (the Atomic Theory) change over time?
Human’s evolved and became more intelligent over time.
Thomson and Rutherford’s ideas were completely incorrect.
Older models were based on opinions, current models are based on facts.
New empirical evidence leads to modifications of existing models.
27
What do you need in order to begin the scientific method?
Tools
A degree
A problem/question
Hands
28
In a controlled experiment, how many variables should be tested at one time?
1
4
3
2
29
Ancient cultures thought Earth was the center of the solar system (geocentric). Why do we know this is wrong?
More scientists believed that Earth was not the center
Human’s evolved and became more intelligent over time.
Ancient cultures lacked the tools to observe the solar system.
More evidence supported the Heliocentric model of our solar system.
30
How is a control variable different than the dependent variable?
Control Variables remain constant.
Control variables are the same as dependent variables
Control variables are the outcome.
Control variables are what the scientist is testing.
