Free Printable Scientific Method

1.

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

2.

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 are the controlled variables?

a)

Type of plant, amount of music, and sunlight

b)

Water, apple juice, milk

c)

Plant growth

3.

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.

4.

An experiment was carried out to determine whether drinking caffeinated soda increases pulse rate. The pulse rates of two groups of people at rest were measured. Group A was then given caffeinated soda and group B was given caffeine-free soda. One hour after drinking the soda, the pulse rates were measured. The participants in the experiment were all the same age, and they were all given the same amount of soda. The dependent variable in this experiment is the

a)

type of soda given to each group

b)

amount of soda given to each group

c)

pulse rate of each group

d)

age of participants in each group

5.

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. The fact that we kept the light, plant, and water the same in each experiment are examples of ____________.

a)

an dependent variable

b)

an independent variable

c)

a control

d)

constants

6.

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.

What is the independent variable?

a)

Dropping the same way

b)

Wing Length

c)

Amount of time it takes the helicopter to hit the floor

d)

Dropping from the same height

7.

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.

What is the dependent variable?

a)

Dropping the same way

b)

Wing Length

c)

Amount of time it takes the helicopter to hit the floor

d)

Dropping from the same height

8.

Ms. DiGeronimo wanted to see how different types of music affected students' pulse rates. She played different types of music: heavy metal, rap, R&B, alternative, pop, country, and classical music. What constant should be considered when doing this experiment?

a)

types of music

b)

using a different student for each music type

c)

amount of time the music was played

d)

Pulse rate of students

9.

This experiment was done to find out which mouthwash kills bacteria most effectively. Each disk was soaked in a different brand of mouthwash. What change would improve the experiment?

a)

Use a smaller plate with less food and moisture

b)

Use bacteria from many habitats, instead of just from the mouth

c)

Use the same size paper disk for each mouthwash

d)

Use only 1 brand of mouthwash for every disk

10.

There is a new vitamin supplement designed to prevent the flu. It was given to two groups. After 10 weeks, neither group reported a case of the flu. What would make this study more valid?

a)

Test only 1 group with 200 mg of the supplement

b)

Test the supplement on both groups for only 5 weeks instead of 10

c)

Test a third group that receives 150 mg of the supplement

d)

Test a third group that does not receive the supplement

11.

There is a new vitamin supplement designed to prevent the flu. It was given to two groups. After 10 weeks, neither group reported a case of the flu. What would make this study more valid?

a)

Test only 1 group with 200 mg of the supplement

b)

Test the supplement on both groups for only 5 weeks instead of 10

c)

Test a third group that receives 150 mg of the supplement

d)

Test a third group that does not receive the supplement

12.

A student is designing an experiment to investigate the effect of light on the rate of ripening of tomatoes. She set up 4 pots of the same size and identical amounts of soil, water, and tomato plants. What label would be most appropriate for the third column of this table?

a)

Height of tomato plants (cm)

b)

Average ripening time (days)

c)

Average weight of tomatoes per plant (grams)

d)

Acidity of tomatoes (pH)

13.

A student did an experiment to find the relationship between breathing rate and exercise. She separated students into 3 groups as shown in the table. What was the purpose of finding the respiratory rates of the students at rest?

a)

To determine if the students were healthy

b)

To practice using the timer

c)

To use as a baseline for comparison

d)

To use as the variable

14.

A student did an experiment to test how effective different antibiotics are. She treated one paper disk with water, and three others with different antibiotics. Each was placed on a dish where bacteria could grow. What is the purpose of the disk treated with water?

a)

It serves as the conclusion for the expeirment

b)

It is needed to provide additional moisture

c)

It serves as a control group

d)

It is needed for safety

15.

A student did an experiment to test how effective different antibiotics are. She treated one paper disk with water, and three others with different antibiotics. Each was placed on a dish where bacteria could grow. What is the independent variable?

a)

The bacterial growth

b)

The size of the paper disks

c)

The type of antibiotic

d)

The disk with water

16.

A student did an experiment to find the relationship between breathing rate and exercise. She separated students into 3 groups as shown in the table. What is the dependent variable?

a)

The type of activity

b)

The group at rest

c)

The groups who ran one lap or two laps

d)

The average respiratory rate

17.

A student is designing an experiment to investigate the effect of light on the rate of ripening of tomatoes. She set up 4 pots of the same size and identical amounts of soil, water, and tomato plants. What is the control group in this experiment?

a)

The pots, soil, and water

b)

Plant 1

c)

The light intensity

d)

The rate of ripening

18.

How does the control group differ from an experimental group in a scientific experiment?

a)

the control group does not contain the experimental data, whereas the experimental group does not

b)

the control group does not contain the experimental variable, whereas the experimental group does

c)

the control group is not tested or measured

d)

the control group contains more than one experimental variable

19.

Which of the following must be done for the results of an experiment to be considered valid?

a)

the experiment must be repeated numerous times and the same results are obtained

b)

the results must be published in a national journal

c)

the results must be shown in a graph

d)

the results must be only quantitative

20.

Two groups of students were timed to compare how fast they could complete a set of math problems. Each group was given the same problems. One group used calculators. The other group did not use calculators.

IV: using or not using calculators

DV: amount of problems solved correctly

CV: same math problems

a)

The DV is wrong. Here is what it should be: the time it takes to complete the problems

b)

The IV is wrong. Here is what it should be: boys versus girls

c)

The CV is wrong. Here is what it should be: same amount of time for all students

21.

Francis wonders where his dog is getting through the fence. He found a spot behind a bush where the fence is rotted away. Francis thought, if the fence is rotted away, then that is where my dog is getting through. Francis developed a

a)

hypothesis

b)

constant

c)

control

d)

graph

22.

A company wants to sell more sports drinks so they decide to add more sugar. For Group A they give them gatorade with an added teaspoon of sugar. For Group B they give them plain gatorade without adding sugar. Which Group is the CONTROL GROUP?

a)

Group A

b)

Group B

c)

The Gatorade

d)

The Company

23.

In the experiment shown, plant A received 50 mL of coke each day, plant B received 50 mL of juice, and plant C received 50 mL of water. Every day for one week, plant growth was measured. Which group served as the control group?

a)

Plant A

b)

Plant B

c)

Plant C

d)

There was no control group

24.

A group of plants receives the same amounts of sunlight BUT different amount of water at the different times each day. What is the constant or controls?

a)

water

b)

amount of sunlight

c)

times of the day

25.

Jim loves tomatoes & beans. He believed that fertilizer will make the plants grow faster, so he treated one plant with fertilizer and the other plant did not receive fertilizer. They both received the same amounts of water & sunlight. Which one is the experimental group?

a)

plant receiving fertilizer

b)

plant not receiving fertilizer

c)

tomatoes

d)

both plants

26.

Michael loves lettuce & lima beans. He believes that fertilizer will make the plant grow faster, so he treated one plant with fertilizer and the other plant did not receive fertilizer. They both received the same amounts of water & sunlight? What is the control group?

a)

plant receiving fertilizer

b)

plant not receiving fertilizer

c)

lima beans

d)

both plants

27.

Michael loves lettuce & lima beans. He believes that fertilizer will make the plant grow faster, so he treated one plant with fertilizer and the other plant did not receive fertilizer. They both received the same amounts of water & sunlight? What is the controls or controlled variables?

a)

fertilizer

b)

water & sunlight

c)

water only

d)

lima beans

28.

A test is set up to test which brand of soda creates the biggest foam explosion when adding a Mentos candy. Three different sodas were tested. They measured the height of the foam eruption. What is a controlled variable (constant) for this experiment?

a)

Brand of soda

b)

Number of mentos candies used

c)

Height of foam eruption

d)

All are controlled variables (constants)

29.

Research Question: Does using a higher quality of gasoline in a car effect how fast the car can drive. What is the experimental group in this experiment?

a)

cars with regular unleaded gasoline

b)

cars with higher quality gasoline

c)

electric cars

d)

gasoline-powered cars

30.

Suppose you are looking at how daisies grow in different light sources. What would your control group be?

a)

Blue filtered light

b)

Red filtered light

c)

Green filtered light

d)

Sunglight

31.

You believe that when someone drinks an energy drink, their heart rate increases. You set up an experiment with various energy drinks and amounts of consumption, and then measure the heart rate of individuals. The types of energy drinks in the experiment is the __.

a)

IV

b)

DV

c)

Control

d)

Constant

32.

A custodian notices some dirty tables and wants to know which cleaner is the best to use. He tests three different cleaners and looks at how well they clean compared to tap water. What is the independent variable?

a)

type of cleaner

b)

tap water

33.

A study was created to test the effects of jazz on people’s sleep patterns. The hypothesis of the experiment was that if people listened to jazz music as they fall asleep, they will sleep for longer periods of time. For the experiment, 2 groups of people were created. One group was placed in a quiet room where they went to sleep and they were timed on how long they slept. The other group was placed in a room where jazz music played softly as they began to sleep and played throughout the night. As each group awoke, their sleep times were monitored. What is the control group?

a)

The group placed in the quiet room

b)

The group in the room where they played jazz

c)

Jazz

d)

Sleep time

e)

Room Temperature

34.

A study was created to test the effects of jazz on people’s sleep patterns. The hypothesis of the experiment was that if people listened to jazz music as they fall asleep, they will sleep for longer periods of time. For the experiment, 2 groups of people were created. One group was placed in a quiet room where they went to sleep and they were timed on how long they slept. The other group was placed in a room where jazz music played softly as they began to sleep and played throughout the night. As each group awoke, their sleep times were monitored. What is the experimental group?

a)

The group placed in the quiet room

b)

The group in the room where they played jazz

c)

Jazz

d)

Sleep time

e)

Room Temperature

35.

A study was created to test the effects of jazz on people’s sleep patterns. The hypothesis of the experiment was that if people listened to jazz music as they fall asleep, they will sleep for longer periods of time. For the experiment, 2 groups of people were created. One group was placed in a quiet room where they went to sleep and they were timed on how long they slept. The other group was placed in a room where jazz music played softly as they began to sleep and played throughout the night. As each group awoke, their sleep times were monitored. What is the independent variable?

a)

The group placed in the quiet room

b)

The group in the room where they played jazz

c)

Jazz

d)

Sleep time

e)

Room Temperature

36.

A study was created to test the effects of jazz on people’s sleep patterns. The hypothesis of the experiment was that if people listened to jazz music as they fall asleep, they will sleep for longer periods of time. For the experiment, 2 groups of people were created. One group was placed in a quiet room where they went to sleep and they were timed on how long they slept. The other group was placed in a room where jazz music played softly as they began to sleep and played throughout the night. As each group awoke, their sleep times were monitored. What is the dependent variable?

a)

The group placed in the quiet room

b)

The group in the room where they played jazz

c)

Jazz

d)

Sleep time

e)

Room Temperature

37.

A study was created to test the effects of jazz on people’s sleep patterns. The hypothesis of the experiment was that if people listened to jazz music as they fall asleep, they will sleep for longer periods of time. For the experiment, 2 groups of people were created. One group was placed in a quiet room where they went to sleep and they were timed on how long they slept. The other group was placed in a room where jazz music played softly as they began to sleep and played throughout the night. As each group awoke, their sleep times were monitored. What is a constant that should be used in this experiment?

a)

The group placed in the quiet room

b)

The group in the room where they played jazz

c)

Jazz

d)

Sleep time

e)

Room Temperature

38.

A study was created to test the effects of fear in children. The hypothesis of the experimenters was that if babies were exposed to fuzzy bunnies and at the same time a loud cymbal was struck close behind them, then that child would be afraid of all fuzzy things. Another group of children would be exposed to bunnies without any loud noises. The study was carried out as planned and as a result, hundreds of young children developed fear of all cute furry bunny rabbits. What is the independent variable?

a)

Babies that heard a loud cymbal every time they saw a bunny

b)

Fear

c)

Cymbal Sound

d)

Age

e)

Babies that did not hear a loud cymbal every time they saw a bunny

39.

A study was created to test the effects of fear in children. The hypothesis of the experimenters was that if babies were exposed to fuzzy bunnies and at the same time a loud cymbal was struck close behind them, then that child would be afraid of all fuzzy things. Another group of children would be exposed to bunnies without any loud noises. The study was carried out as planned and as a result, hundreds of young children developed fear of all cute furry bunny rabbits. What is the dependent variable?

a)

Babies that heard a loud cymbal every time they saw a bunny

b)

Fear

c)

Cymbal Sound

d)

Age

e)

Babies that did not hear a loud cymbal every time they saw a bunny

40.

A study was created to test the effects of fear in children. The hypothesis of the experimenters was that if babies were exposed to fuzzy bunnies and at the same time a loud cymbal was struck close behind them, then that child would be afraid of all fuzzy things. Another group of children would be exposed to bunnies without any loud noises. The study was carried out as planned and as a result, hundreds of young children developed fear of all cute furry bunny rabbits. What is a constant that should be used in this experiment?

a)

Babies that heard a loud cymbal every time they saw a bunny

b)

Fear

c)

Cymbal Sound

d)

Age

e)

Babies that did not hear a loud cymbal every time they saw a bunny

41.

A study was created to test the effects of fear in children. The hypothesis of the experimenters was that if babies were exposed to fuzzy bunnies and at the same time a loud cymbal was struck close behind them, then that child would be afraid of all fuzzy things. Another group of children would be exposed to bunnies without any loud noises. The study was carried out as planned and as a result, hundreds of young children developed fear of all cute furry bunny rabbits. What is the experimental group in this experiment?

a)

Babies that heard a loud cymbal every time they saw a bunny

b)

Fear

c)

Cymbal Sound

d)

Age

e)

Babies that did not hear a loud cymbal every time they saw a bunny

42.

Suzie wants to know the effect of different colors of light on the growth of plants. She believes that plants can survive best in white light. She buys 5 ferns of the same species, which are all approximately the same age and height. She places one in white light, one in blue light, one in green light, one in red light and one in the closet. All of the ferns are planted in Miracle-Grow and given 20 mL of water once a day for 2 weeks. After the two weeks, Suzie observes the plants and makes measurements. What is the independent variable?

a)

Plant grown with no light in a closet

b)

color of light

c)

Amount of water given to the ferns

d)

Plants grown in different colors of light

e)

height

43.

Suzie wants to know the effect of different colors of light on the growth of plants. She believes that plants can survive best in white light. She buys 5 ferns of the same species, which are all approximately the same age and height. She places one in white light, one in blue light, one in green light, one in red light and one in the closet. All of the ferns are planted in Miracle-Grow and given 20 mL of water once a day for 2 weeks. After the two weeks, Suzie observes the plants and makes measurements. What is the dependent variable?

a)

Plant grown with no light in a closet

b)

color of light

c)

Amount of water given to the ferns

d)

Plants grown in different colors of light

e)

height

44.

Suzie wants to know the effect of different colors of light on the growth of plants. She believes that plants can survive best in white light. She buys 5 ferns of the same species, which are all approximately the same age and height. She places one in white light, one in blue light, one in green light, one in red light and one in the closet. All of the ferns are planted in Miracle-Grow and given 20 mL of water once a day for 2 weeks. After the two weeks, Suzie observes the plants and makes measurements. What is a controlled variable in this experiment?

a)

Plant grown with no light in a closet

b)

color of light

c)

Amount of water given to the ferns

d)

Plants grown in different colors of light

e)

height

45.

Suzie wants to know the effect of different colors of light on the growth of plants. She believes that plants can survive best in white light. She buys 5 ferns of the same species, which are all approximately the same age and height. She places one in white light, one in blue light, one in green light, one in red light and one in the closet. All of the ferns are planted in Miracle-Grow and given 20 mL of water once a day for 2 weeks. After the two weeks, Suzie observes the plants and makes measurements. What is the experimental group in this experiment?

a)

Plant grown with no light in a closet

b)

color of light

c)

Amount of water given to the ferns

d)

Plants grown in different colors of light

e)

height

46.

Mr. Batchelder wants to know if the the number of games he watches the Cardinals play each season has an effect on the number of games they win. Mr. Batchelder decides to run this experiment over three football seasons. The first season he watches none of the games the Cardinals play. The second season he watches 50% of the games they play. The third season he watches 100% of the games they play. He watches all the games from the same spot on his couch and wears his lucky tie. What is the independent variable?

a)

The number of games Mr. Batchelder watches

1.

Independent Variable

b)

His lucky tie

2.

Constant Variable

c)

The number of games the Cardinals win

3.

Dependent Variable

d)

The season where Mr. Batchelder watches 0 games.

4.

Control Group

e)

The seasons where Mr. Batchelder watches 50% and 100% of the games.

5.

Experimental Group

47.

A custodian notices some dirty tables and wants to know which cleaner is the best to use. He tests three different cleaners and looks at how well they clean compared to tap water. What is the control group?

a)

type of cleaner

b)

tap water

48.

An experiment is being done to determine how light affects the growth of small zinnia plants. One plant is placed in full sunlight, the second in a shaded area, the third in an unlit closet. What is the control group in this experiment?

a)

the amount of light

b)

the plant in the closet

Scientific Method

Total questions: 48

Worksheet time: 38mins

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