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Exit Level TAKS -- Objective 1 - 3
Test Description: Release TAKS questions and other questions for objective 1
Instructions: Answer all questions to get your test result.
1) What part of the compound microscope should be used to adjust the amount of light illuminating a prepared slide?
A
diaphragm
B
coarse-focus knob
C
eyepiece
D
rotating nosepiece
2) Which of these is the best reason to not eat or drink while in the laboratory?
A
Spilled drinks can make cleanup of chemicals difficult.
B
Some foods produce toxic gases when mixed with acits.
C
Chemicals spilled on hands can be transferred to food.
D
Particles of food an contaminate chemical reagents.
3) Which of the following should be used to determine whether pond water is too acidic to support plant life?
A
Voltmeter
B
pH meter
C
Geiger counter
D
Motion detector
4) What are the correct steps of the scientific method?
A
observations, hypothesis, experiment, model, further experiment
B
experiment, observations, hypothesis, model, further experiment
C
observations, experiment, hypothesis, model, further experiment
D
model, further experiment, experiment, hypothesis, observations
5) Erlenmeyer flasks and beakers are used for --
A
all of the above
B
reacting
C
mixing
D
transporting
6) When water is paced in a glass or plastic container the surface takes on a curve shape. The curve is known as a --
A
it doesn't curve!
B
meniscus
C
minus
D
graduated curve
7) A tentative proposal that explains observations is known as --
A
observation
B
experiment
C
hypothesis
D
model
8) Data that is obtained by making measurement is called --
A
contolled data
B
qualitative data
C
measured data
D
quantitative data
9) The single varialbe that we elect to manipulate is called --
A
independent variable
B
control
C
dependent variable
D
variable
10) Errors are unavoidable in any experiment. No measurement is perfect. An error in reading a measurement is called --
A
random error
B
systematic error
C
random and systematic error
D
reading error
*select an answer for all questions
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