**Scientific Method Worksheet**

**Name :**

**Class/# :**

**Day, date :**

**Step 1: Put the steps of the scientific method in the correct order.**

Do background research

Ask a question

Analyze results

Construct a hypothesis

Draw conclusions

Test with an experiment

**Step 2: Using the below synopsis, match each of the steps of the scientific method to its corresponding statement.**

Synopsis: Jenny has been working hard
all summer on her tomato garden. Recently, she noticed that

insects have been eating her tomatoes
and tomato plants and she is worried about spraying them with
harmful, store-bought pesticides.

Jenny states that if she sprays her
vegetables with a natural, homemade solution to help fight

the bug problem, then her vegetables
will still grow to the same size as they would if she used

store bought
pesticides____________________________

Jenny sprays one third of her
vegetables with store bought pesticides , one third of her
vegetables with her homemade solution, and does not spray the
remaining third (her control
group) ____________________________

After one week, Jenny compares and
tests the differences in her vegetables____________________________

Jenny wonders how she can protect her
plants from bugs without harming the

vegetables____________________________

Jenny determines that her homemade
solution was just as effective as the store-bought

pesticides____________________________

Jenny goes to the library and looks up
different kind of pesticides and their effect on
vegetables and also
looks up natural remedies to help solve her bug
problem____________________________

**Identify the independent variable and the dependent variable.**

1. Christine investigated
how fast one year old Persian cats reacted to
different whistles.

Independent Variable
______________________________________________

Dependent Variable
_______________________________________________

2. Identify the
independent variable, dependent variable, and constants.

Mario studied how far
room temperature tap water would spurt out of a
plastic milk carton
when 3 mm holes were punched at different heights
from the bottom of
the container.

Independent Variable
______________________________________________

Dependent Variable
_______________________________________________

Constants
_______________________________________________________

________________________________________________________________

3. Identify the
independent variable and dependent variable in each hypothesis.

a. If different motor
oils are put in water, then they will float at different
heights on
the water.

Independent
Variable________________________________________

Dependent Variable
__________________________________________

b. If the number of
twists of a rubber band is increased, then a toy
propeller airplane
will fly farther.

Independent Variable
________________________________________

Dependent Variable
__________________________________________

4. Determine if the
hypothesis is supported by the data and explain your answer.

Lamont knew that water
made things look larger. He wondered what other
liquids such as
alcohol and glycerin would do. Lamont thought a pencil
would look
larger in the thicker liquid (glycerin), followed by water, and
then
alcohol. In the experiment he rated the increase in pencil size from
1
to 10, with 10 as the largest. His rankings were 7 for glycerin, 5
for water,
and 2 for alcohol.

________________________________________________________________

________________________________________________________________

________________________________________________________________

________________________________________________________________

5. Make a hypothesis
about the following using an “If . . . , then . . . “ statement.

a. The time for different
size water drops to fall through vegetable oil.

_________________________________________________________

_________________________________________________________

_________________________________________________________

b. How high an ice cube
will float in different temperatures of water.

_________________________________________________________

_________________________________________________________

_________________________________________________________

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