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Science: Chapter 01 Test MC

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 
What did Mario Molina contribute to science?
a.
He discovered that CFCs could damage the ozone layer.
b.
His research led to new treatments for the virus that causes AIDS.
c.
His skepticism about the safety of DDT led to its being banned.
d.
He used space technology to help people in West Africa.
 

 2. 
Which of the following processes allows scientists to read and comment on scientific research before publication?
a.
scientific review
c.
peer review
b.
scientific criticism
d.
informed consent
 

 3. 
How does skepticism benefit scientists?
a.
It helps separate science from other subjects.
b.
It leads scientists to continually question assumptions.
c.
It prevents other scientists from being ethical.
d.
It allows scientists to be more competitive.
 

 4. 
What is the first step of a scientific investigation?
a.
conducting an experiment
c.
drawing a conclusion
b.
asking a question
d.
making a prediction
 

 5. 
By sharing information, scientists can compare hypotheses and
a.
make more money.
c.
win prizes.
b.
start over again.
d.
form consistent explanations.
 

 6. 
A statement made in an if-then format is called a
a.
variable.
c.
conclusion.
b.
question.
d.
prediction.
 

 7. 
When analyzing results, scientists sometimes arrange data in a
a.
graph.
c.
hypothesis.
b.
speech.
d.
variable.
 

 8. 
Accurate record keeping, openness, and replication of results help to maintain a scientist’s
a.
income at a high level.
b.
hypotheses and observations.
c.
believability with other scientists and society.
d.
loss of believability.
 

 9. 
Why are safety rules important in science?
a.
They help prevent accidents and injury.
b.
They help you earn more money.
c.
They help you teach other students.
d.
They help prevent injury but not accidents.
 

 10. 
First aid is
a.
follow-up.
c.
permanent care.
b.
emergency medical care.
d.
intensive care.
 

 11. 
When an accident happens during a science lab, you should always
a.
clean up quickly and hide the accident.
b.
stay calm and tell your teacher.
c.
pick up your books and leave the lab.
d.
wave your hands and warn people by yelling.
 

 12. 
What do scientists use to answer questions and solve problems?
a.
the natural world
c.
dinosaurs
b.
scientific methods
d.
hypothesis
 

 13. 
Which of the following is NOT an element of safety?
a.
Read the directions after an activity.
c.
Clean up your work area.
b.
Know the meaning of safety symbols.
d.
Use the right safety equipment.
 

 14. 
What should you do when an accident happens?
a.
Clean up the mess as slowly as you can.
c.
Stay calm and tell your teacher.
b.
Pretend you know nothing.
d.
Wave your hands and yell for help.
 

 15. 
What should you learn about each safety symbol?
a.
how to draw it
c.
what it warns you about
b.
who made it up
d.
where to find it
 

 16. 
What is the importance of scientific literacy in daily life?
a.
Science teaches you to think like the majority of other people so you can fit in better.
b.
Science teaches you to make careful observations, ask good questions, and think logically about information.
c.
Science teaches you to make decisions that can lead to finding a better career.
d.
Science teaches you to question everything whether it makes sense or not, and to always be skeptical.
 

 17. 
Which of the following will make you a better-informed consumer?
a.
watching television
c.
reading novels
b.
surfing the Internet
d.
studying science
 

 18. 
What happens when similar investigations give different results?
a.
Scientists do more studies to see if the differences are significant.
b.
Scientists give up and start new projects.
c.
Scientists only believe their own results.
d.
Scientists decide that all the different results are true.
 

 19. 
What do accurate record keeping, openness, and replication of results help maintain?
a.
a scientist’s income
b.
a high number of scientific awards
c.
a scientist’s believability with other scientists and society
d.
the education of a scientist
 

 20. 
Which of the following statements is true when a hypothesis is unsupported?
a.
The question was not valid.
c.
The observations were wrong.
b.
The results are still valuable.
d.
The investigation will end.
 

 21. 
When Rachel Carson questioned the claims chemical companies made about pesticides, she was showing
a.
skepticism.
c.
curiosity.
b.
creativity.
d.
honesty.
 

 22. 
How does a controlled experiment work?
a.
One variable is changed and the results are observed.
b.
No observations are made.
c.
Many variables are changed at once and observed.
d.
A factor called a prediction is changed.
 

 23. 
What does a safety symbol showing a bottle with a skull and cross-bones mean?
a.
Handle animals used with care.
b.
Protect your eyes with goggles.
c.
Be careful handling the chemicals used in the activity.
d.
Don’t do this dangerous activity at all.
 

 24. 
A man who has diabetes signs up to participate in a research study. He has a free medical exam and learns about the study. He tells the researchers that he thinks that the study is too risky. What should the researchers tell him?
a.
that he has the right to refuse to participate in the study
b.
that he must participate because he had a free exam
c.
that he should volunteer to be in a control group
d.
that he should start the study and should later decide if he wants to quit
 

 25. 
Roshan wants to investigate whether petting dogs and cats helps people who are anxious stay calm. Which of the following should Roshan take into consideration before starting her experiment?
a.
if the people in the study own a dog or cat
b.
if the people in the study know the risks they may face
c.
if the people in the study are willing to adopt the dogs and cats
d.
if the people in the study know the common breeds of dogs and cats
 



 
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