Free Printable scientific method

1.

A hypothesis is

a)

Something one can prove to be true

b)

broad

c)

specific and testable

d)

a fact

e)

an observation or natural phenomenon

2.

A theory

a)

has been substantiated by a large body of evidence.

b)

is a random guess

c)

is an educated guess

d)

is highly specific

e)

is something one can prove to be true

3.

The experimental group is compared to the _______ because it does not receive treatment.

a)

Control Group

b)

Experimental Group

c)

Control variable

d)

independent variable

e)

dependent variable

4.

The _______ receives the treatment or the change.

a)

Control Group

b)

Experimental Group

c)

Dependent variable

d)

Control variable

e)

Hypothesis

5.

If I study for my scientific method test, then I will have a better test score. What is the dependent variable?

a)

Scientific Method

b)

Studying

c)

Independent variable

d)

Test score

6.

If I ride my bike to school instead of walking, then I will get to school faster. I will take the same route. What is the dependent variable?

a)

The route

b)

Time

c)

Riding a bike or walking

d)

The destination

7.

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

8.

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

9.

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.

10.

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. What do the results indicate?

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.

11.

The graph below shows atmospheric carbon dioxide levels since the year 1880. What is the dependent variable?

a)

None of these

b)

Parts per million

c)

Year

d)

Atmospheric concentration of CO2

12.

Researchers observed the leaves from maple trees fall in autumn when the days were colder and shorter. To find out if the length of daylight causes leaves to fall, the researchers set up an experiment. They set up two greenhouses that were exactly the same size and maintained approximately the same temperature. Two small maple trees of the same age were placed in each greenhouse. In one greenhouse, the same amount of daily light was provided for 180 days. In the other greenhouse, the amount of daily light became progressively shorter for 180 days. The results were collected and are shown in the figure.

In this experiment, which of the following is the one variable that is changed in this experiment?

a)

The amount of light that the plants received

b)

The number of leaves that dropped

c)

The temperature inside of the greenhouse

d)

The group of plants that received a progressively lesser amount of light each day

e)

The group of plants that received the same amount of light each day.,

13.

Researchers observed the leaves from maple trees fall in autumn when the days were colder and shorter. To find out if the length of daylight causes leaves to fall, the researchers set up an experiment. They set up two greenhouses that were exactly the same size and maintained approximately the same temperature. Two small maple trees of the same age were placed in each greenhouse. In one greenhouse, the same amount of daily light was provided for 180 days. In the other greenhouse, the amount of daily light became progressively shorter for 180 days. The results were collected and are shown in the figure.

Which of the following is a constant/control variable in this experiment?

a)

The amount of light that the plants received

b)

The group of plants that received the same amount of daily light

c)

The number of leaves that dropped

d)

Time

e)

None of these

14.

Researchers observed the leaves from maple trees fall in autumn when the days were colder and shorter. To find out if the length of daylight causes leaves to fall, the researchers set up an experiment. They set up two greenhouses that were exactly the same size and maintained approximately the same temperature. Two small maple trees of the same age were placed in each greenhouse. In one greenhouse, the same amount of daily light was provided for 180 days. In the other greenhouse, the amount of daily light became progressively shorter for 180 days. The results were collected and are shown in the figure.

Which of the following is an independent variable in this experiment?

a)

The amount of light that the plants received each day

b)

The group of plants that received the same amount of light each day

c)

The number of leaves that dropped

d)

The temperature inside the greenhouse

e)

The group of plants that received a progressively lesser amount of light each day

15.

Researchers observed the leaves from maple trees fall in autumn when the days were colder and shorter. To find out if the length of daylight causes leaves to fall, the researchers set up an experiment. They set up two greenhouses that were exactly the same size and maintained approximately the same temperature. Two small maple trees of the same age were placed in each greenhouse. In one greenhouse, the same amount of daily light was provided for 180 days. In the other greenhouse, the amount of daily light became progressively shorter for 180 days. The results were collected and are shown in the figure.

Which of the following is a dependent variable in this experiment?

a)

The amount of light that the plants received each day

b)

The group of plants that received a progressively lesser amount of light each day

c)

The group of plants that received the same amount of daily light

d)

The number of leaves that dropped

e)

The temperature inside the greenhouse

16.

A researcher predicts that chemical X will make plants grow taller, and designs an experiment to test the prediction. This prediction can be classified as a(n)?

a)

Observation

b)

Dependent variable

c)

Independent variable

d)

Hypothesis

e)

Theory

17.

You spend energy each day to perform tasks, such as maintaining a heart rate, breathing, walking and writing. The original source of this energy came from

a)

glucose

b)

water

c)

the sun

d)

proteins

e)

aliens

18.

Living organisms and non-living systems have numerous characteristics in common, but only organisms

a)

Have the ability to utilize energy

b)

Are composed of atoms

c)

Have the ability to move

d)

Have the ability to self-replicate

e)

Are composed of cells

19.

At a laboratory at Case Western Reserve University in 1998, geneticist Patricia Hunt was making a routine check of her female lab mice. As she extracted and examined developing eggs from the ovaries, she began to wonder what had gone wrong. She noticed that many of the eggs showed problems with their chromosomes, and some had irregular amounts of genetic material, which can lead to miscarriages and birth defects in mammals. She learned that a lab assistant had washed the plastic mouse cages and water bottles with a harsh soap, releasing BPA from the plastic. Knowing that BPA is an endocrine disruptor, a chemical that can enter organisms and mimic hormones, Hunt set out to discover whether it had adversely affected her mice.

Hunt and her team designed an experiment to test her hypothesis about the effect of BPA on mice. They administered daily doses of BPA to groups of female mice over three, five, or seven days and then tested these mice for genetic abnormalities that occur during meiosis, the division of chromosomes during egg formation.

When Hunt graphs the results, the percentage of mice displaying genetic abnormalities will be on the...

a)

X axis because it is the dependent variable

b)

Y axis because it is the dependent variable

c)

X axis because it is the independent variable

d)

Y axis because it is the independent variable

e)

There is not enough information to determine

20.

At a laboratory at Case Western Reserve University in 1998, geneticist Patricia Hunt was making a routine check of her female lab mice. As she extracted and examined developing eggs from the ovaries, she began to wonder what had gone wrong. She noticed that many of the eggs showed problems with their chromosomes, and some had irregular amounts of genetic material, which can lead to miscarriages and birth defects in mammals. She learned that a lab assistant had washed the plastic mouse cages and water bottles with a harsh soap, releasing BPA from the plastic. Knowing that BPA is an endocrine disruptor, a chemical that can enter organisms and mimic hormones, Hunt set out to discover whether it had adversely affected her mice.

Hunt and her team designed an experiment to test her hypothesis about the effect of BPA on mice. They administered daily doses of BPA to groups of female mice over three, five, or seven days and then tested these mice for genetic abnormalities that occur during meiosis, the division of chromosomes during egg formation.

When Hunt graphs the results, the dosage of BPA administered will be on the...

a)

X axis because it is the dependent variable

b)

Y axis because it is the dependent variable

c)

X axis because it is the independent variable

d)

Y axis because it is the independent variable

e)

There is not enough information to determine

scientific method

Total questions: 20

Worksheet time: 20mins

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