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Living Environment Review 1: Scientific Method
Test Description: Scientific Method
Instructions: Answer all questions to get your test result.
1) Which structure is best observed using a compound light microscope?
A
a cell
B
a virus
C
a DNA sequence
D
the inner surface of a mitochondrion
2) A scientist is planning to carry out an experiment on the effect of heat on the function of a certain enzyme. Which would not be an appropriate step?
A
using what is already know about the enzyme
B
doing research in a library
C
having discussions with scientists
D
completing a data table of expected results
3) Researchers performing a well-designed experiment should base their conclusions on
A
data from repeated trials of the experiment
B
the hypothesis of the experiment
C
results predicted before performing the experiment
D
a small sample size to insure a reliable outcome of the experiment
4) Which statement best describes a controlled experiment?
A
It tests the effect of a single independent variable.
B
It avoid the use of variables.
C
It shows the effect of dependent variable on an independent variable.
D
It eliminates the need for dependent variables.
5) An investigation is carried out to determine the effect of exercise on the rate at which a person can squeeze a clothespin. In this investigation, the independent variable is the
A
exercise
B
rate of squeezing
C
number of participants
D
control
6) An experiment was carried out to answer the question Does the pH of water affect the growth of radish plants? What was the dependent variable in this experiment?
A
temperature of the water
B
pH of the water
C
height of the plants
D
type of soil
7) In an experiment to determine the effect of exercise on the pulse rate, a student checks his pulse rate before and after exercising. The purpose of checking his pulse before exercising is that it
A
serves as the conclusion for the experiment
B
is needed to formulate a hypothesis
C
is needed to justify the sample size
D
serves as a control for the experiment
8) Tomato plants in a garden are not growing well. The gardener hypothesizes that the soil is too acidic. To test this hypothesis, the gardener could
A
plant seeds of a different kind of plant
B
reduce the amount of water available to the plant
C
change the pH of the soil
D
move the tomato plants to area with less sunlight
9) Why do scientists consider any hypothesis valuable?
A
A hypothesis requires no further investigation
B
A hypothesis may lead to further investigation even if it is disproved by the experiment.
C
A hypothesis requires no further investigation if it is proved by the experiment.
D
A hypothesis can be used to explain a conclusion even if it is disproved by the experiment
10) Who is the best teacher around?
A
Me
B
Mrs. Hausman
C
Nobody
D
You
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