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Scientific Method Unit 1

Total questions: 28

Worksheet time: 28mins

Name
Class
Date
1.

Sharon wants to conduct an experiment to determine if increasing the concentration of carbon dioxide around a plant will affect the plant’s rate of photosynthesis. She knows she must complete the following steps:

  1. Interpret data and display results in a graph.
  2. Record data as she conducts the experiment.
  3. Evaluate data and draw conclusions.
  4. Make a hypothesis

In which order should she conduct these steps?

a)

2, 4, 3, 1

b)

4, 2, 1, 3

c)

3, 1, 2, 4

d)

4, 2, 3 ,1

2.

In 1927, the geneticist Hermann Muller exposed flies to ultraviolet light. He found that the flies’ offspring displayed many mutations. He concluded that the ultraviolet rays caused chromosome breakage, which caused the mutations?


What is his independent variable?

a)

Chromosomes

b)

Ultraviolet light

c)

Mutations

d)

Flies

3.

In 1887 a strange nerve disease attacked the people in the Dutch East Indies. The disease was beriberi. Symptoms of the disease included weakness and loss of appetite, victims often died of heart failure. Scientists thought the disease might be caused by bacteria. They injected chickens with bacteria from the blood of patients with beriberi. The injected chickens became sick. However, so did a group of chickens that were not injected with bacteria.


One of the scientists, Dr. Eijkman, noticed something. Before the experiment, all the chickens had eaten whole-grain rice, but during the experiment, the chickens were fed polished rice. Dr. Eijkman researched this interesting case. He found that polished rice lacked thiamine, a vitamin necessary for good health.


What was the hypothesis of the original study?

a)

Scientist thought the illness was caused by a virus

b)

Scientist thought the illness was being caused by people of the Dutch East Indies

c)

Scientist thought the illness was caused by bacteria

d)

Scientist thought the illness was due to a lack of thiamine.

4.

This is the variable that the scientist changes in order to test the results of the experiment.

a)

Independent Variable

b)

Dependent Variable

c)

Controlled Variable

d)

Causation Variable

5.

Consider the following statement: If the bananas are exposed to higher levels of ethylene gas, then they will ripen quicker. Which of the following words best describes this statement?

a)

Hypothesis

b)

Question

c)

Conclusion

d)

Experiment

6.

Once a scientist formulates a scientific question, they must complete another important step before starting their experiment. What is this step?

a)

Formulate a question.

b)

Gather research.

c)

Perform an experiment.

d)

Formulate a conclusion.

7.

Consider this hypothesis: If I increase the amount of sunlight, then plants will grow more blooms. What is the INDEPENDENT variable?

a)

Sunlight

b)

Water

c)

Blooms

d)

Plant growth

8.

Consider this hypothesis: If I increase the amount of sunlight, then plants will grow more blooms. What is the DEPENDENT variable?

a)

Sunlight

b)

Water

c)

Blooms

d)

Plant growth

9.

This is the variable that changes when the independent variable changes. They depend on changes from something else.

a)

Independent Variable

b)

Dependent Variable

c)

Controlled Variable

d)

Causation Variable

10.

These variables remain unchanged and include quantities that the scientist wants to remain constant.

a)

Independent Variable

b)

Dependent Variable

c)

Controlled Variable

d)

Causation Variable

11.

Landon wants to test how Miracle Grow fertilizer impacts the plant growth of his new tree over time. He will add various amounts of Miracle Grow fertilizer to his newly planted tree and measure their progress. The Miracle Grow is a(n) _______.

a)

Independent Variable

b)

Dependent Variable

c)

Controlled Variable

d)

Causation Variable

12.

Which is true about the scientific method?

a)

It's a series of processes of how scientists discover creativity in the lab.

b)

It's a list of safety precautions that all students and scientists must use in the lab.

c)

The scientific method can only be used by certified scientists in a lab setting.

d)

It's a series of processes which allow someone to make predictions, test, and form conclusions about a problem.

13.

Consider the following statement: If I post on Instagram at 10:00PM, then I'll get the most like. Which of the following words best describes this statement?

a)

Hypothesis

b)

Question

c)

Research

d)

Problem

14.
Hypothesis means: 
a)
a. An educated guess
b)
b. The main idea of a paragraph
c)
c. A random guess
d)
d.  None of the above
15.
Which is an example of making a conclusion?
a)
a.  Mr. Rivas asks, “Does a person move less if they eat more?"
b)
b.  Mr. Rivas sets up an experiment where he feeds different groups of people different amounts of food.
c)
c.  Mr. Rivas analyzes his data and sees that the groups of people that ate more moved less.
d)
d.  Mr. Rivas concludes his hypothesis was right based on his data: people do move less if they more.
16.
An experiment is the step that happens after:
a)
a.  Analyzing your data
b)
b.  Making a hypothesis
c)
c.  Sharing your results
d)
d.  Making a conclusion
17.
Which of the following would you analyze after you do an experiment?
a)
a.  The data you gathered
b)
b.  Other people’s conclusions
c)
c.  Your own conclusion
d)
d.  None of the above
18.
Which of the following happens first?
a)
a.  Make a hypothesis
b)
b.  Ask a question
c)
c.  Share your results
d)
d.  Analyze your data
19.
Which is an example of “making an experiment”?
a)
a. Mr. Rivas asks, “Does drinking milk help you fall asleep at night?”
b)
b. Mr. Rivas sees on his graph that people who drank more milk got tired faster at night.
c)
c. Mr. Rivas thinks that if a person drinks more milk, then the person will sleep faster at night.
d)
d. Mr. Rivas gives milk to 5 people and nothing to 5 other people. He times how long it takes for everyone to go to sleep.
20.
What is an observation?
a)
a. Using one or more of your five senses to describe a situation
b)
b. Making a guess about a situation
c)
c. Both a and b
d)
d. None of the above
21.
Which of the following are examples of data?
a)
a. Graphs
b)
b. Tables
c)
c. Diagrams or pictures
d)
d. All of the above
22.
Make a hypothesis from the following question:
Does Facebook make people feel lonelier the longer they use it?
a)
Facebook makes people lonelier.
b)
If I have people spend more time on Facebook, then they will feel more lonely the longer they use it.
c)
Facebook doesn't make people lonelier.
d)
The more posts you read about other people on facebook, the more lonely you feel.
23.
Independent variable means:
a)
What the scientists changes
b)
What doesnt change
c)
What changes by itself
d)
What you expect to change
24.
Dependent variable means:
a)
What the scientists changes
b)
What doesnt change
c)
What changes by itself
d)
What you expect to change
25.
Read the following hypothesis:
If I type the brand of battery being used, then the amount of time a battery will last longer.
What is the dependent variable?
a)
The time the battery lasts
b)
How big the battery is
c)
The color of the battery
d)
The type of battery
26.
A constant is:
a)
What the scientists changes
b)
What doesnt change
c)
What changes by itself
d)
What you expect to change
27.
I want to see if the color of a lit candle will affect how long it takes for the candle to completely melt. I make sure to use the same size candle and the same temperature to melt it.
What are the constants in this experiment?
a)
Just the size of the candle
b)
Both the size and the temperature
c)
Just the temperature
d)
The color of the candle
28.
I want to see if the color of a lit candle will affect how long it takes for the candle to completely melt. I make sure to use the same size candle and the same temperature to melt it.
What are the constants in this experiment?
a)
Just the size of the candle
b)
Both the size and the temperature
c)
Just the temperature
d)
The color of the candle