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Unit 1 Checkpoint Review (7th) Flashcards | StudBud
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Unit 1 Checkpoint Review (7th)
Unit 1 Checkpoint Review (7th)
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Flashcards
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Questions
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Answers
1
Which property of vinegar can you investigate using one of your senses?
Its pH is greater than water's pH
It conducts electricity when mixed with water
It's density is greater than water's
Tastes sour
2
Where would a chemist most likely perform an experiment?
Performing a survey
Out in the field
In a laboratory
Using scientific laws
3
Which definition best describes a variable in an investigation?
Any factor that might change during an experiment
The factor that is being controlled
The factor that is being measured
Set of results for an experiment
4
Which answer best describes a scientific theory?
Explanation based on an opinion
Well-supported explanation of nature
Description of a specific relationship
A statement describing what always happens
5
A testable idea or explanation that leads to scientific investigation.
Variable
Hypothesis
Law
Theory
6
Kathleen knows that finding new data can change a scientific idea. What else can change it?
Debate
Opinions
New government laws
New scientists
7
Why do experiments include many trials as opposed to a single trial?
It makes data easier to analyze
Scientists can make changes as they go
It increases the amount of data
Scientists can spend less time making observations
8
The study of the natural world.
Language Arts
Science
Math
Social Studies
9
Which of the following is a reason a scientist would use a model to study DNA?
DNA is too dangerous
DNA is too small
DNA doesn't really exist
DNA is very rare
10
A well-supported explanation of nature. Helps us understand the laws we observe.
Variable
Law
Theory
Science
11
During an scientific investigation, which step will a scientist perform first?
Plan the experiment
Defend their conclusions
Collect and organize data
Define the problem
12
A visual or mathematical representation of an object or system.
Theory
Model
Data
Law
13
What most likely caused scientist to change the model of what an atom looked like?
Scientists found new evidence
The particles in atoms were observed
The structure actual of atoms changed
Scientists become more creative
14
What should a scientist do if the data from their investigation doesn't match their hypothesis?
Change the procedures of the experiment
Do more trials
Change the data to match the hypothesis
Form a new hypothesis and test it
15
The factor that is deliberately manipulated or changed in an investigation.
Hypothesis
Law
Dependent Variable
Independent Variable
16
The factor that changes as a result of manipulation or one or more independent variables.
Theory
Dependent Variable
Hypothesis
Independent Variable
17
During a scientific investigation, which step occurs after the scientist collects data?
Follow the procedure
Form a hypothesis
Draw conclusions
Plan the experiment
18
Why is a model an effective way to understand the structure of water?
Water is too complex to understand
The structure of water is not really known
Real water molecules are too small
It's too dangerous to observe them
19
A description of a specific relationship under given condition in the natural world.
Empirical Evidence
Variable
Theory
Law
20
Which branch of science would most likely deal with living organisms?
Physics
Chemistry
Mathematics
Biology
