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Total questions: 55

Worksheet time: 30mins

Name
Class
Date
1.

What is a possible answer or explanation to a question based on knowledge, observations, and research?

HINT: It is often written in "if...then" format.

a)

Observation

b)

Hypothesis

c)

Experiment

d)

Conclusion

2.

Why is it important to write down your procedure?

a)

So that I can photocopy it for my friends.

b)

To take up more class time.

c)

So that other scientists can repeat it.

d)

So that I don't have to do it later.

3.

The information gathered from making observations is called ____.

a)
data
b)

experiment

c)

graph

d)

procedure

4.

What is an independent variable?

a)

The variable being tested or changed by the scientist, also known as the manipulated variable.

b)

The variable that the

scientist is measuring or

observing, also known as the responding variable.

c)

The variables that the scientist keeps constant, which allows them to attribute the results to the independent variable alone.

5.

How many independent variables should we change when conducting an experiment?

a)

1

b)

2

c)

3

d)

As many as we want

6.

What is the independent variable in the following scenario?

"The blood pressure of a soldier is measured while he is resting. The soldier is then exposed to a stressful environment and his blood pressure is measured again."

a)

the environment

b)

the soldier

c)

blood pressure

d)

none of the above

7.

What is a dependent variable?

a)

The variable being tested or changed by the scientist, also known as the manipulated variable.

b)

The variable that the

scientist is measuring or

observing, also known as the responding variable.

c)

The variables that the scientist keeps constant, which allows them to attribute the results to the independent variable alone.

8.

What is the dependent variable in the following scenario?

"The blood pressure of a soldier is measured while he is resting. The soldier is then exposed to a stressful environment and his blood pressure is measured again."

a)

the environment

b)

the soldier

c)

blood pressure

d)

none of the above

9.

What is a controlled variable?

a)

The variable being tested or changed by the scientist, also known as the manipulated variable.

b)

The variable that the

scientist is measuring or

observing, also known as the responding variable.

c)

The variables that the scientist keeps constant, which allows them to attribute the results to the independent variable alone.

10.

What is the controlled variable in the following scenario?

"The blood pressure of a soldier is measured while he is resting. The soldier is then exposed to a stressful environment and his blood pressure is measured again."

a)

the environment

b)

the soldier

c)

blood pressure

d)

none of the above

11.

Suppose you are performing an experiment measuring the maximum amount of table salt that can be dissolved in water as the temperature of the water increases. In this experiment, what would be the dependent and independent variables?

a)

temperature is the independent variable; amount of table salt is the dependent variable

b)

amount of water is the independent variable; amount of table salt is the dependent variable

c)

temperature is the independent variable; amount of water is the dependent variable

d)

amount of table salt is the independent variable; temperature is the dependent variable

12.

A theory is a ____.

a)

proposed explanation for an observation

b)

well-tested explanation for a broad set of observations

c)

summary of the results of many observations

d)

procedure used to test a proposed explanation

13.

A variable that you change during an experiment is called a(n)

a)

Dependent variable

b)

Independent variable

14.

What is an observation?

a)

Something you measure or detect with your senses.

b)

The way you feel about something

c)

An educated guess

d)

A theory that has been disproved

15.

What is the scientific method?

a)

A systematic procedure for how to conduct a scientific experiment

b)

The process of solving a problem

c)

A way of making non-scientific observations

d)

A way to summarize findings from multiple investigations

16.

An educated guess in science is called a/an

a)

hypothesis

b)

procedure

c)

conclusion

d)

lucky

17.

What step does every scientific experiment begin with?

a)

hypothesis

b)

question/problem

c)

procedures

d)

conclusion

18.
When making an observation, you must use...
a)
Only Sight
b)
Smell & Touch
c)
ALL 5 Senses
d)
Only Taste
19.
Which of the following is an observation of the picture?
a)
The person is wearing a T-shirt
b)
It is a sunny day
c)
The person is going to a birthday party
d)
The gift is a DVD player
20.
A scientist performs an experiment to see if acids have an effect on the health of a particular type of plant. Three sets of plants were treated with acidic solutions of known pH while the control set was treated with a solution of neutral pH 7.Which is the best conclusion for this experiment?
a)
Acid has no effect on the health of this type of plant.
b)
B. High acidity is helpful to this type of plant.
c)
C. Low acidity is harmful to this type of plant.
d)
High acidity is harmful to this type of plant.
21.
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.
22.
Carmen conducted an experiment to determine if listening to different types of music would affect a person’s pulse. Her hypothesis was that pulse rate would change with different types of music. Each person listened to seven different selections of music for 30 seconds each. Each person’s pulse was taken before the music and then after each 30-second interval of music. The pulses were taken again after the music selections were completed. Based on her experiment, Carmen concluded that a person’s pulse rate changed when the person listened to different types of music.  Which component is missing from Carmen’s experiment?
a)
a question
b)
a hypothesis
c)
a control group
d)
a description of the experiment
23.
An osmosis investigation was conducted using chicken eggs to represent cells with semipermeable membranes. The mass of each egg was measured to determine how much water diffused into or out of the eggs. The eggs were first soaked in vinegar to dissolve the shell. Each egg was then placed in one of three different solutions for 24 hours. The table below shows the results of the investigation. Based on this experiment, which of the following should be inferred about cells with semipermeable membranes?
a)
Substances other than water may also cross the cell membrane.
b)
Substances other than water may block pores in the cell membrane.
c)
 Water enters the cell when placed in environments of high water concentration.
d)
Water leaves the cell when placed in environments with a low concentration of solutes
24.
In order to be accepted, a scientific theory must be
a)
 widely tested and supported by extensive data
b)
 based on the results of a single experiment
c)
 controversial and cause debate
d)
 in line with all previous historical ideas
25.
Which statement best expresses a basic scientific assumption?
a)
Interpretation of experimental results has provided explanations for all natural phenomena.
b)
If a conclusion is valid, similar investigations by other scientists should result in the same conclusion.
c)
For any conclusion to be valid, the design of the experiment requires that only two groups be compared.
d)
After a scientist formulates a conclusion based on an experiment, no further investigation is necessary.
26.

What is the best way to collect and record data?

a)

In a data table

b)

On post-it notes

c)

On scrap paper

d)

interpretive dance

27.
The summary at the end of an experiment that explains the results. 
a)
conclusion
b)
procedures
c)
materials
d)
responding variable
28.
This part of the experiment serves as a basis of comparison; the one variable being tested has been omitted. 
a)
experimental group
b)
control group
c)
data
d)
variables
29.
A student wants to test the effects of type of exercise on heart rate.  What is the dependent variable?
a)
heart rate
b)
type of exercise
c)
amount of exercise
d)
time of day exercise occurs
30.

What is the primary goal of conducting a risk assessment?

a)

To eliminate all risks entirely

b)

To identify and control workplace hazards

c)

To increase productivity and efficiency

d)

To meet legal requirements

31.

What is the first step in the risk assessment process?

a)

Implementing control measures

b)

Reviewing existing risk assessments

c)

Identifying hazards

d)

Training employees

32.

What are the steps to risk assessment?

a)

1: Identify the Hazards.

2: Decide Who Might Be Harmed and How.

3: Evaluate the Risks and Take Action to Prevent Them.

4: Record Your Findings.

5: Review the Risk Assessment.

b)

1: Identify the Hazards.

2: Decide Who Might Be Harmed and How.

3: Record Your Findings.

c)

1: Identify the Hazards.

2: Decide Who Might Be Harmed and How.

3: Evaluate the Risks and Take Action to Prevent Them.

4: Record Your Findings.

d)

1: Identify the Hazards.

2: Decide Who Might Be Harmed and How.

3: Evaluate the Risks and Take Action to Prevent Them.

4: Review the Risk Assessment.

33.
What is the aim of a risk assessment?
a)
To meet legal duties
b)
To meet moral obligations
c)
It is needed by the insurance company
d)
To make sure no one gets hurt or ill from work activities
34.

The first step in risk assessment is ........

a)

Hazard Identification

b)

Risk Evaluation

c)

Recording significant findings

d)

Risk Control

35.
What is a risk assessment?
a)
Essay about the environment
b)
Process for identifying preventive and protective measures by evaluating the risk from a hazard
c)
Checklist of hazards and preventive actions
d)
Minutes of a safety meeting
36.

What is this piece of lab equipment called?

a)

Beaker

b)

Graduated cylinder

c)

Test tube

d)

Funnel

37.
Identify the equipment shown here:
a)
graduated cylinder
b)
Erlenmeyer flask
c)
beaker
d)
volumetric flask
38.
Name this item
a)
Florence flask
b)
Stirring rod 
c)
Test tube
d)
Test tube holder
39.

Long hair should be....

a)

Cut short

b)

Tucked behind ears

c)

Tied back during experiments

d)

Put away

40.

What equipment is part of the Personal Protective Equipment?

a)

Goggles, Apron

b)

Hair tie, Apron

c)

Goggles, shoes

d)

gloves, hair tie

41.

If a spill should occur, what do you do?

a)

Report spill to teacher

b)

Clean the spill

c)

Continue with experiment

d)

Wipe spill onto floor/into sink

42.

If any equipment is broken or damaged, what should you do

a)

Continue with experiment

b)

Swap it with another group's equipment

c)

Don't do the experiment

d)

Report to teacher immediately

43.

Is it okay to run in the lab?

a)

Only if it is an emergency

b)

Yes

c)

No

d)

If i'm playing with friends

44.

When is it okay to mix chemicals

a)

During an experiment

b)

When a teacher instructs you to

c)

When you feel curious

d)

Before the experiment starts

45.

It is okay to sit down during an experiment?

a)

Only when the teacher says

b)

Yes

c)

No

d)

When i feel tired of standing

46.

If an injury occurs, what should you do?

a)

Leave the class and go to sick bay

b)

Stay quiet about it

c)

Notify Teacher immediately

d)

Administer first aid

47.

What does this symbol mean?

a)

flammable

b)

corrosive

c)

danger to the environment

d)

Health Hazard

48.

Which option below shows both precision and accuracy?

a)
b)
c)
49.
It is a measure of how close measurements come to each other when they are made in the same way
a)
Accuracy
b)
Precision
c)
Error
d)
Extrapolation
50.

How close a measurement is to the accepted value is called..

a)

Accuracy

b)

Precision

c)

Significant

d)

Estimate

51.
This bullseye demonstrates...
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
52.
?
a)
High Accuracy & High Precision
b)
High Accuracy & Low Precision
c)
Low Accuracy & High Precision
d)
Low Accuracy & Low Precision
53.
Describe the accuracy and precision of the image
a)
Accurate and Precise
b)
Accurate and not precise
c)
Not Accurate and Precise
d)
not accurate and not precise
54.
Volume?
a)
63.5 mL
b)
63 mL
c)
63.55 mL
d)
6 mL
55.

Which Student is the most Precise?

a)

Alex

b)

Shandra

c)

Luis

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