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Scientific Method & Lab Safety Flashcards | StudBud

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Scientific Method & Lab Safety

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Semester Review of Unit 1 and 2 Lab Safety and Scientific Method

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Questions 10

Answers

1
In order for the apple tree experiment to be valid scientifically, both orchards must:
all of these
receive the same amount of water
receive the same amount of sunlight
have the same species of apple tree
2
What should be done immediately if a chemical gets in the eye?
Notify the Instructor; then use the eye-wash fountain
Nothing, unless the chemical causes discomfort
Use the eye-wash fountain; then return to the experiment
Use the eye-wash fountain; then notify the instructor
3
What would immediately be used if a large chemical spill had occurred on your clothing?
Eye-wash fountain
Safety shower
Laboratory sinks
Fire extinguisher
4
If a theory is challenged by new evidence, which of the following could occur?
the theory is accepted, not the evidence
the theory could be altered
the evidence is wrong
a vote is taken on whether to accept the new evidence
5
What is the independent variable?
the first orchard
the chemical
the number of apples
the second orchard
6
Theories help scientists to:
prove hypotheses
explain large bodies of data
determine truth from lies
propose new ideas
7
Whom should you call in case of an emergency in the lab?
Lab Partner
Everyone
Teacher
Ghostbusters
8
A hypothesis must be:
observed
testable
experimental
proven correct
9
What should be worn in a laboratory at all times to decrease the likelihood of eye injury?
Contacts
Safety Goggles
A mask
Corrective lenses
10
Ultimately, all scientific knowledge comes from:
textbooks
both experimentation & observation
experimentation
observation