WorksheetsScientific Method Review
Total questions: 18
Worksheet time: 54mins
Name
Class
Date
1.
A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of plants were treated with acidic solutions of known pH while the control set was treated with a solution of neutral pH 7.Which is the best conclusion for this experiment?
a)
Acid has no effect on the health of this type of plant.
b)
B. High acidity is helpful to this type of plant.
c)
C. Low acidity is harmful to this type of plant.
d)
High acidity is harmful to this type of plant.
2.
The graph below shows atmospheric carbon dioxide levels since the year 1880.Which of the following conclusions can be drawn from this graph
a)
Atmospheric carbon dioxide levels are responsible for global temperature change.
b)
Atmospheric carbon dioxide levels have been rising at about the same rate for the past century.
c)
Atmospheric carbon dioxide levels have remained the same over the past century.
d)
Atmospheric carbon dioxide levels have been rising at an increasingly higher rate as the past century has progressed.
3.
A research group has discovered that damselflies, a type of dragonfly, are being infected by a particular type of aquatic protozoan. Both young and adult damselflies are not directly infected by the protozoan but contract the infection from the prey they eat. The graph shows the percentage of adult damselflies infected by protozoans during the summer and early fall
a)
Infection in embanked ponds increased during the sampling period.
b)
Protozoans were more common in creek-fed ponds than embanked ponds.
c)
Protozoans reproduce more quickly in embanked ponds than creek-fed ponds.
d)
Infection in creed-fed ponds remained constant throughout the sampling period.
4.
An osmosis investigation was conducted using chicken eggs to represent cells with semipermeable membranes. The mass of each egg was measured to determine how much water diffused into or out of the eggs. The eggs were first soaked in vinegar to dissolve the shell. Each egg was then placed in one of three different solutions for 24 hours. The table below shows the results of the investigation. Based on this experiment, which of the following should be inferred about cells with semipermeable membranes?
a)
Substances other than water may also cross the cell membrane.
b)
Substances other than water may block pores in the cell membrane.
c)
Water enters the cell when placed in environments of high water concentration.
d)
Water leaves the cell when placed in environments with a low concentration of solutes
5.
In order to be accepted, a scientific theory must be
a)
widely tested and supported by extensive data
b)
based on the results of a single experiment
c)
controversial and cause debate
d)
in line with all previous historical ideas
6.
Which statement best expresses a basic scientific assumption?
a)
Interpretation of experimental results has provided explanations for all natural phenomena.
b)
If a conclusion is valid, similar investigations by other scientists should result in the same conclusion.
c)
For any conclusion to be valid, the design of the experiment requires that only two groups be compared.
d)
After a scientist formulates a conclusion based on an experiment, no further investigation is necessary.
7.
The basic unit of length in the metric system is
a)
foot
b)
inch
c)
meter
d)
mile
8.
Using one or more of your senses to gather information is called
a)
observing
b)
classifying
c)
predicting
d)
inferring
9.
The most important lab safety rule is
a)
Follow teacher's instructions and textbook directions exactly
b)
Always wear a lab apron
c)
Always wear safety goggles
d)
Design & conduct your own experiment without asking your teacher
10.
What is the first thing you should do if a lab accident occurs?
a)
Run out of the room screaming
b)
Tell your teacher
c)
Find the emergency equipment
d)
Go to the nearest hospital
11.
The standard to which you compare the results of an experiment is called
a)
constant
b)
control group
c)
independent variable
d)
dependent variable
12.
During an experiment, if you purposely change the temperature to test a hypothesis, the temp is called the
a)
independent variable
b)
operational variable
c)
dependent variable
d)
responding variable
13.
Observations that deal with a number or amount are called
a)
manipulated observations
b)
operational observations
c)
qualitative observations
d)
quantitative observations
14.
An explanation that ties together many hypotheses and explanations is called a(n)
a)
model
b)
concept
c)
theory
d)
investigation
15.
Walker is testing which fertilizer will grow the tallest grass. The height of the grown grass is the __ variable.
a)
dependent (measured)
b)
independent (changes)
16.
A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.
a)
Diameter of the ball
b)
Force acting on the ball
c)
Height that the ball bounces
d)
Height from which the ball is dropped
17.
Information gathered from your experiment.
a)
observation
b)
variable
c)
hypothesis
d)
data
18.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...
a)
The type of plant
b)
The amount of sunlight
c)
The type of music
d)
The type of liquid
100 %
