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The Nature of Science

Total questions: 20

Worksheet time: 14mins

Name
Class
Date
1.

A scientist performs an experiment and asks other scientists around the world to replicate it.


Why would other scientists most likely try to perform the same experiment?

a)

to find out if weather of various regions of the world would affect the results

b)

to see if the experiment would be less expensive in another part of the world

c)

to confirm the results of the experiment conducted by the scientist

d)

to verify that the hypothesis of the experiment is a scientific law

2.

A scientific hypothesis is ________________

a)

a guess

b)

a proposed explanation that can be tested

c)

the correct answer to a question

d)

another important opinion in science

3.

If Mr. X tried to sell you a $900 product with the claim it "cured all illnesses," you should __

a)

buy all of it and sell it for a profit

b)

ask him if he would let you work for him

c)

ask for more data and evidence to support his claim

d)

buy 1 bottle and try it out on yourself

4.

When your classmate copies an experiment that you have already conducted it is called _____

a)

restitution

b)

replication

c)

repetition

d)

cheating

5.

Which is an example of a model?

a)

the globe of Mars

b)

paper

c)

an olive

d)

your textbook

6.
Which of the following is a scientific observation? 
a)
The potato is brown in color.
b)
The potato tastes the best.
c)
The potato may cause allergies.
d)
The potato smells funny. 
7.
What is another word for hypothesis?
a)
evidence
b)
graph
c)
investigation
d)
prediction
8.
A scientist is collecting data on the number of times a cricket chips per minute. What sense is the scientist most likely using to make observations?
a)
hearing
b)
smell
c)
sight
d)
touch
9.
Which question can best be investigated by a scientist?
a)
Should I buy a red shirt or a green shirt?
b)
Does chocolate milk or plain milk taste better?
c)
Does a plant need sunlight to grow?
d)
Which feels softer, cat fur or dog fur?
10.
Why should an experiment be repeated?
a)
to form a hypothesis
b)
to reduce the chance of error
c)
to change controls
d)
to identify the problem
11.
How many independent variables should be tested at a time in a scientific investigation?
a)
none
b)
one
c)
two
d)
three
12.
What is an inference? 
a)
Just a guess.
b)
A statement based off of your observations. 
c)
The same as an observation. 
d)
Examples of something. 
13.
Which statement is an observation?
a)
That house is empty because there are no lights on. 
b)
Her hair is brown. 
c)
Her hair is brown because she dyed it. 
d)
Her hair has not been cut in two years. 
14.
Waldriana would like to investigate the effect of temperature on the amount of food birds eat.  What should she do first to begin her investigation?
a)
develop a question 
b)
conduct background research
c)
design an experiment
d)
come up with a theory
15.
Rigoberto writes down his hypothesis that more salt will dissolve in cold water than in warm water.  He adds salt to different temperatures of water and records his observations including the amount of undissolved salt.  He finds that there is more salt dissolved in warm water than cold water.  What should Rigoberto do next to make sure that his conclusion is valid?
a)
do another investigation with sugar
b)
repeat his investigation using a different liquid than water
c)
repeat his investigation to see if his results are the same
d)
change his results to match his original hypothesis
16.
Scientists are studying how bears kept in zoos behave.  Which of these would be the best control group?
a)
bears in the wild
b)
bears kept as pets
c)
other animals in zoos
d)
other animals in the wild
17.
1.  Why is it important to have a control in an investigation?
a)
Controls are used to show that different results are caused by changing the variable.
b)
Without controls, it is not possible to make a hypothesis.
c)
A control helps us to predict.
d)
Controls are the answer to the investigative question.
18.
A valid scientific investigation must be able to be 
a)
graphed.
b)
predicted.
c)
replicated (which means repeated)
d)
observed.
19.

Step by step instructions for completing a task.

a)

inference

b)

procedure

c)

variable

d)

evidence

20.

The information from which a conclusion can be drawn or a prediction can be made.

a)

data

b)

evidence

c)

inference

d)

investigation

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