AnswersHSOH-Geology IEvaluating Scientific Explanations

Evaluating Scientific Explanations — Unit test Answers

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Alisha organizes her data about the element lead into a table.Which did Alisha place in the wrong column?

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A
Density: 11.34 g/cm3
B
Soft
C
Solid at room temperature
D
Malleable
2
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Which is a scientific claim?

A
At least 75 percent of the class will pass the physical science test today because they studied more than two hours for it.
B
According to the star of the number-one teen TV show, crushed rosemary and olive oil spread over pimples will draw out the bacteria and prevent scarring.
C
Plants fertilized once per week with Super Plant Food Formula have been shown in testing to produce twice as much fruit as plants that are not.
D
Placing half-filled one-gallon jugs of water out on the lawn prevents moles from occupying the space underground.
3

Which is one precaution to take when working with heat and fire?

A
Do not use during experiments.
B
Keep flammables away.
C
Avoid touching face and eyes.
D
Do not mix chemicals unless told to do so.
4

The results of a dart game were precise but not accurate. The accepted value of the game was the center of the dartboard.

A
All of the darts hit the center of the board.
B
Some of the darts hit the center of the board.
C
The darts hit the same general area of the board.
D
The darts hit very different areas of the board.
5

Why is newton's first law of motion considered a law and not a theory?

A
It is an unsupported idea.
B
It is based on multiple observations.
C
It has never been tested.
D
It was validated by a singular experiment.
6

Material safety data sheets are used to give the information about a solvent. The excerpt below is part of an MSDS.

Question illustration
A
fire safety
B
disposal safety
C
chemical use safety
D
glassware safety
7

Which kind of investigations allow for the control of variables?

A
hypothesis
B
experimental
C
descriptive
D
comparative
8

Which professional most likely uses X-ray technology?

A
a food critic
B
a dentist
C
a financial analyst
D
a pharmacist
9

Read the measurement.

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A
34 mL
B
38 mL
C
39 mL
D
40 mL
10

The table shows results of an experiment that was replicated.

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A
They are neither precise nor reproducible.
B
They are precise but not reproducible.
C
They are accurate and reproducible.
D
They are accurate but not reproducible.
11

Which describes something in nature and predicts how it will behave without explaining why?

A
law
B
theory
C
hypothesis
D
data
12

Analyze the graph.

Question illustration
A
increasing parking meters
B
increasing traffic signals
C
increasing places to park bikes
D
decreasing bike-repair shops
17

Which is the SI base unit for mass?

A
meter
B
pound
C
gram
D
foot
19

A class is using marshmallows to demonstrate different chemicals’ properties by heating and cooling the marshmallows. Which student is practicing bad laboratory safety?

A
Neka is cleaning up the melted marshmallows after recording her observations.
B
Nikkos checks his glassware for imperfections before using them.
C
Kenneth is using the Bunsen burner to roast the marshmallows and eat them.
D
Kojo threw the used marshmallows into the trash can after his instructor told him to do so.
20

What is a main reason why the scientific model of atoms is considered a theory rather than a law?

A
It has been proven as a fact.
B
It has been changed over time.
C
It predicts but does not explain.
D
It has stayed the same for a long time.
25

When an experiment is replicated, how should the results of the two experiments compare?

A
The results of the first experiment should be less accurate.
B
The results of the second experiment should be less accurate.
C
The results of the experiments should be similar.
D
The results of the experiments should be one hundred percent certain.

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