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Laboratory Safety and Scientific Method Review Flashcards | StudBud
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Laboratory Safety and Scientific Method Review
Laboratory Safety and Scientific Method Review
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1
How many factors change in an experiment?
four
never more than 1
three
two
2
What does a thermometer measure?
volume
mass
temperature
weight
3
When a student makes an a conclusion, based upon an observation best defines:
variable
hypothesis
observation
inference
4
If I increase the height of my ramp, then my bike will move faster. What did the student make?
a hypothesis
an observation
a riddle
an inference
5
The control group in an experiment is:
kept the same.
what is measured.
used for comparison.
what is changed.
6
What tool is used to measure the volume of an irregularly shaped object?
spring scale
graduated cylinder
triple beam
ruler
7
What instrument is used to measure mass?
spring scale
ruler
Triple beam balance
Graduated cylinder
8
Which of the following is an example of a dependent variable (measure)?
The amount of sunlight
The height of the plant
The same plant
The control group
9
A tool used to measure the weight of an object is:
triple beam
ruler
spring scale
grad cylinder
10
Which way of writing a hypothesis is appropriate?
I think I have strep throat.
I believe I have strep throat.
The results were positive for strep throat.
If I have a throat culture, then I will test postive for strep throat.
11
If only 1 factor in an experiment changes, then everything else must stay:
the same or constant.
opposite
different
12
A grad cylinder holding 30 ml of water was displaced by rock rising the level to 45 ml, what is its volume?
15 ml
85 ml
30 ml
75 ml
13
The amount of sunlight causes the sunflowers to grow taller. Which of the following is the independent variable?
The same type of plant
The amount of sunlight
The sunflower without sunlight
The height of the sunflower
14
Which of the following is an example of an inference?
The teacher handed back Sai his test, he smiled, he must have a good grade.
A student went to the office.
I believe I got a good grade on my quiz.
I witnessed a car accident.
15
After you test a hypothesis, the next step in the scientific method is:
results/analysis
identify the problem
conclusion
make a hypothesis
16
What tool is used to enlarge a small object with your eye?
graduated cylinder
thermometer
magnifying glass
ruler
17
Which of the following is an example of an observation?
A doctor prescribed me medicine.
A student states If I wash my hands, then I will have no germs.
It is cloudy outside, it will probably rain later.
A student writes in his journal that lithium bubbled in water.
18
What instrument is used to measure volume?
funnel
graduated cylinder
pipette
triple beam balance
19
A theory is based upon:
laws.
beliefs that are widely accepted.
observations
facts.
20
Which of the following is an inference?
A duck crosses the road, he must be going to the pond.
My little sister hit my other sister with a bottle.
A student lit his bunsen burner.
A student saw a fight in the cafeteria.
