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Scientific Method Practice

Total questions: 20

Worksheet time: 40mins

Name
Class
Date
1.

The _________________________ answers the problem you are trying to solve in an experiment and explains the results to others.

a)

procedure

b)

hypothesis

c)

conclusion

d)

data

2.
What is the part of the experiment that is left alone or “natural", and is used to compare back to?
a)
Independent Variable
b)
Dependent Variable
c)
Control Group
d)
Experimental Group 
3.
What is a factor that the experimenter has full control over and changes to see what happens?
a)
Dependent Variable
b)
Independent Variable
c)
Control group 
d)
Hypothesis
4.
What is a factor that changes because of what the experimenter does?
a)
Dependent Variable
b)
Independent Variable
c)
Control Group
d)
Hypothesis
5.
Nick wanted to see how high an ice cube would float in different temperatures of water. Identify the DEPENDENT variable
-Amount of water
-Height of Ice cube
-Temperature the ice cube was at its highest height
-Temperature of the water
-Size of the ice cube
a)
Amount of water 
b)
Height of Ice cube
c)
Temperature the ice cube was at its highest height 
d)
Size of the ice cube
6.
The following statement is a hypothesis formed about marsh grass: 
If the amount of nitrogen marsh grass receives is increased, then the height of the grass will increase, because nitrogen is an essential nutrient needed for marsh grass to grow.
What is the independent variable of the statement above? 
a)
Height of grass
b)
Amount of nitrogen
c)
Essential nutrient
d)
Amount of growth
7.
A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is
a)
the male alligators
b)
the incubator
c)
the gender of the alligator
d)
the temperature
8.
A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The dependent variable is
a)
the size of the baby alligators
b)
the gender of the baby alligators
c)
the incubator
d)
the temperature
9.
In this graph, what is the independent variable? 
a)
Population
b)
Day
c)
Species 5
10.
In this graph, what is the dependent variable? 
a)
Walla Walla Island
b)
Time
c)
Number of Deer
11.
The summary at the end of an experiment that explains the results. 
a)
conclusion
b)
procedures
c)
materials
d)
responding variable
12.
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
13.
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, what is the dependent variable?
a)
Type of plant
b)
Water, apple juice, milk
c)
Plant growth
d)
Color of the plant's leaves
14.
If plants are exposed to sunlight, then they will grow taller.
What part of the scientific method is this an example of?
a)
Procedure
b)
Hypothesis
c)
Question
d)
Results
15.
The independent variable is the ONE thing you _____.
a)
change on purpose
b)
control or keep constant
c)
measure
16.
Why do we want to test one variable at a time?
a)
Because it is hard to setup a data table with more
b)
To know what is causing the changes. This helps us understand cause and effect.
c)
It is what has always been done
17.

Degas, Nyasia, and Abriana decided to test which objects in their classroom were attracted to magnets. When their teacher asked why they were doing their experiment, they told their teacher the reason.

What part of the scientific method is this called?

a)

a) purpose (problem statement)

b)

b) materials

c)

c) data

d)

d) hypothesis

18.
Which would go on the y-axis?
a)
Time
b)
# of Bacteria 
19.

Diamond wanted to know how earthworms will affect the growth rate of her plants, so she placed soil in two identical pots, and added earthworms to Pot A and no earthworms to Pot B. Diamond kept everything else the same. What is the control group?

a)

the earthworms

b)

Pot A

c)

Pot B

d)

the soil

20.

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 a known pH while the control.

Remember: (0 - highest acidity / 7 = neutral / 14 - highest alkalinity)


Using the picture, what is the best conclusion for this experiment?

a)

Acid has no effect on the health of this type of plant

b)

High acidity is helpful to this type of plant

c)

Low acidity is harmful to this type of plant

d)

High acidity is harmful to this type of plant

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