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NGSS Prep - Nature of Science Flashcards | StudBud
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NGSS Prep - Nature of Science
NGSS Prep - Nature of Science
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Basic scientific method for Biology
Flashcards
39 cards
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Practice quiz
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Questions
39
Answers
1
Why did our model of atoms (the Atomic Theory) change over time?
Older models were based on opinions, current models are based on facts.
Human’s evolved and became more intelligent over time.
Thomson and Rutherford’s ideas were completely incorrect.
New empirical evidence leads to modifications of existing models.
2
For a controlled experiment to be reliable you must conduct multiple trials.
True
False
3
What is happening between 4-10 seconds
an object was not moving
an object is experienceing positive acceleration
an object is experiencing negative acceleration
an object is moving at constant speed
4
Theories help explain the natural world. Why do scientific theories normally get modified over time?
scientist change their minds if it is learned to be harmful to society
scientists get smarter and use better technology
scientists find new evidence to better explain
scientists do experiment that show the theory was wrong
5
What kind of science model is a Punnett Square
mathematical model
conceptual model
physical model
computer model
6
What is an outcome dependent variable in controlled experiment?
The variable that changes in response to the tested independent variable.
The variables that must remain the same to ensure the outcome is fair.
The results that you measure at the end of the experiment
The variable that is deliberately changed.
7
Ancient cultures thought Earth was the center of the solar system (geocentric). Why do we know this is wrong?
Human’s evolved and became more intelligent over time.
More evidence supported the Heliocentric model of our solar system.
Ancient cultures lacked the tools to observe the solar system.
More scientists believed that Earth was not the center
8
How is a control variable different than the dependent variable?
Control variables are the same as dependent variables.
Control Variables remain constant.
Control variables are the outcome.
Control variables are what the scientist is testing.
9
Scientific knowledge is changed and updated as more scientists change their opinions.
False
True
10
What kind of scientific model represents a systems of ideas?
physical model
mathematical model
computer model
conceptual model
11
All scientific research follows the same scientific method process.
False
True
12
How many independent variables should be tested in an experiment?
1
As many as necessary
2
3
13
Theories can be modified, and laws are permanent
True
False
14
A student models the water cycle by following the steps listed below.
Put the cup in a sunny location.
Sprinkle water on the plastic
Turn the cup upside down.
Place the cup in a bowl of water.
15
Which scenario would be the most credible and accurate?
Not controlling variables and doing one trial.
Controlling variables and doing 100 trials
Not controlling variables and doing 100 trials
Controlling all variables and doing one trial
16
The dependent variable is the.....
Stays the same
Is known before the experiment
Results
Changed by the scientist
17
The outcome that is measured in an experiment.
controlled variable
independent variable
dependent variable
18
In a controlled experiment, how many variables should be tested at one time?
1
3
2
4
19
Hypothesis ALWAYS includes the tested independent variable and the outcome dependent variable.
False
True
20
The variable being tested.
independent variable
dependent variable
varying variable
constant variable
21
What is an example of a prediction?
Increasing the temperature will increase the rate of a chemical reaction
The metal was shiny and brittle.
The sugar had a mass of 15 grams.
oxygenproduced by the plant decreased as the amount of light decreased.
22
What is the independent variable
When you hold something constant
The variable measured
The outcome
The variable being tested and changed
23
Is sugar dissolving into water a physical or chemical change?
Chemical
Physical
24
Smithers thinks protein shakes makes workers stronger. What's the dependent variable here?
The task
Shakes
The age of workers
Worker Strength
25
What are the two variables always included in a hypothesis or problem statement?
tested dependent
tested independent
outcome independent
outcome dependent
26
How can the results of your experiment be replicated?
other scientist to conduct the exact same experiment
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
27
Why does the control group not get the independent variable?
To prove a hypothesis is correct
To be precise or accurate
To compare results against the test group
To prevent scientific bias
28
Why are scientific theories rarely discarded and more likely to be modified and changed with new evidence?
scientists are never wrong
Scientists often change their opinions
the data and evidence used to support the theory do not change
the data supporting theories are verified through replication by others
29
In this science experiment, what is the variable that is being tested?
The color of the food dye
The volume of the water
The temperature of the water
The type of container
30
The effect of amount of light on plant growth. What is the independent variable?
Plant growth
The type of plant
Amount of Light
The amount of Soil
31
The effect of the amount of light on plant growth. This would be a good....
Independent variable
Hypothesis
Title for a graph
Dependent variable
32
The steps of the scientific method..
must all be used in every scientific investigation.
always results in the development of a theory.
often start with a question.
must always be used in the same order.
33
Which statement BEST describes the difference between a scientific theory and law?
A scientific theory explains a phenomenon, a scientific law describes
A scientific law explains a phenomenon, a scientific theory describes
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
34
Select the correctly written hypothesis
Dogs are friendly
If you treat dogs well they will be friendly.
What happens if you train dogs?
If you train dogs more they might be better.
35
If an experiment cannot be replicated by other scientists then it's
a good experiment
Perfect
Reliable
Not reliable
36
What do you need in order to begin the scientific method?
A problem/question
Hands
Tools
A degree
37
This is when you state whether your hypothesis was correct, your errors, and what you do next.
Procedure
Conclusion
Problem
Graph
38
The variable that is being tested.
control
independent
constant
dependent
39
What is a scientific theory?
The same as a hypothesis
A well tested explanation for how something works.
A best guess about something.
An absolute truth.
