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Unit 0: Lab Safety, Scientific Method, Creating Tables, Graphing

Total questions: 51

Worksheet time: 35mins

Name
Class
Date
1.

A controlled experiment allows scientists to isolate and test

a)

several variables

b)

a conclusion

c)

a mass of information

d)

a single variable

2.

If data from repeated experiments do not support the hypothesis, the scientist's next step should be to

a)

give up

b)

alter the experiment and try again

c)

repeat the experiment

d)

overturn the theory

3.

If you were testing how well different dish soap cleaned grease, the independent (experimental) variable would be the

a)

dishes

b)

water

c)

dish soap

d)

type of grease

4.

In order for the conclusion of a scientific experiment to be convincing, the researcher must report adequate evidence supporting or refuting the hypothesis. Scientific evidence should include the

a)

results from an experiment with just one trial.

b)

results from only the trials that produced the expected results.

c)

results from multiple trials of one experiment, including the unexpected.

d)

results from multiple different experiments.

5.

The______________ variable is the variable you are observing and that changes in response to the ______________variable

a)

independent; dependent

b)

dependent; independent

c)

dependent; control

d)

independent; control

6.

Which one of the following is NOT an example of quantitative data?

a)

number of flowers on a plant

b)

size of the flower

c)

height of the flower

d)

color of the flower

7.

Using the graph, estimate ice cream sales when the temperature was 25 degrees C

a)

~$30

b)

~$40

c)

~$60

d)

Impossible to tell

8.

Using the graph, which of the following would be a good title for this graph?

a)

Temperature and ice cream sales

b)

Ice cream tastes better when it’s hot

c)

The relationship between ice cream sales and temperature

d)

The effect of ice cream sales on temperature

9.

Flammable materials, like alcohol, should never be used near

a)

an open door

b)

another student

c)

a sink

d)

an open flame

10.

If a lab fire erupts, immediately

a)

tell Mr. Worthy

b)

Run around the room laughing

c)

open the windows

d)

throw water on the fire

e)

get and use the fire extinguisher

11.

Approved eye protection devices (such as goggles) are worn in the laboratory

a)

to avoid eye strain

b)

to improve your vision

c)

only if you have corrective glasses

d)

any time chemicals, heat, or glassware is used.

12.

If you do not understand a direction or part of a lab procedure, you should

a)

skip it and go to the next part

b)

ask Mr. Worthy

c)

try different ideas until something works

d)

figure it out as you do the lab

13.

After completing an experiment, all chemical wastes should be

a)

taken home

b)

dumped in the sink

c)

disposed of per Mr. Worthy's instructions

d)

left at your lab station for the next class

14.

You are heating a substance in a test tube. Always point the open end of the tube

a)

away from all people

b)

toward a classmate you don't like

c)

toward yourself

d)

toward your best friend in class

15.

You are heating a piece of glass and now want to pick it up. You should

a)

pour cold water on it

b)

use tongs or heat resistant gloves

c)

pick it up by the end that was farthest from the heat

d)

use some paper towels

16.

Long hair in the laboratory must be

a)

tied back or kept entirely out of the way with a hair band, hairpins, or other confining device

b)

always neatly groomed

c)

held away from the experiment with one hand

d)

left to cascade like a supermodel, your popularity is more important

17.

The following footwear is best in the laboratory.

a)

flip flops

b)

high heels

c)

closed-toed shoes

d)

Jesus Joggers

18.

Horseplay or practical jokes in the laboratory are

a)

ok if you are working alone

b)

not dangerous

c)

hilarious

d)

always against the rules

19.

A set of principles that explains and predicts a phenomena is called a _____.

a)

scientific law

b)

scientific theory

c)

scientific method

d)

none of these

20.

A scientific ____________ is a statement that describes what always happens under certain conditions in nature.

a)

law

b)

theory

c)

method

d)

variable

21.

This variable in an experiment is the one being deliberately changed by the scientist.

a)

dependent variable

b)

independent variable

c)

data

d)

control group

22.

There are two types of data. Which type of data involves numbers that are obtained by counting or measuring?

a)

quantitative

b)

qualitative

23.

A list of the steps anyone could follow to conduct an experiment.

a)

observations

b)

question/problem

c)

materials

d)

procedures

24.

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.

a)

height from which the ball is dropped

b)

force acting on the ball

c)

height that the ball bounces

d)

diameter of the ball

25.

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

a)

dependent

b)

compound

c)

independent

d)

control

26.

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, what is the dependent variable?

a)

plant growth

b)

water, apple juice, milk

c)

color of the plant's leaves

d)

type of plant

27.

What is the part of the experiment that is left alone or “natural", and is used to compare back to?

a)

independent variable

b)

dependent variable

c)

experimental group

d)

control group

28.

What type of graph is this?

a)

bar

b)

scatter plot

c)

line

d)

pie

29.
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, what are the controlled variables?
a)
Type of plant, amount of music, and sunlight
b)
Water, apple juice, milk
c)
Plant growth
30.
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, what is the dependent variable?
a)
Type of plant
b)
Water, apple juice, milk
c)
Plant growth
31.
Find the DV:  You experiment to see if a bouncy ball or a tennis ball bounces higher.
a)
Type of ball
b)
Same drop height
c)
Height of bounce
d)
Same surface
32.
Find the IV:  You experiment to see if a bouncy ball or a tennis ball bounces higher.
a)
Type of ball
b)
Same drop height
c)
Height of Bounce
d)
Same surface
33.
An experiment for a new asthma medication was set up into two groups. Group one was given the new drug for asthma, while group 2 was given a sugar pill. The sugar pill serves as a 
a)
control
b)
dependent variable 
c)
experimental variable
d)
constant
34.
Scientific questions have to be...
a)
Measurable 
b)
Easy
c)
Interesting
35.
Nick wanted to see how high an ice cube would float in different temperatures of water. Identify the DEPENDENT variable
-Amount of water
-Height of Ice cube
-Temperature the ice cube was at its highest height
-Temperature of the water
-Size of the ice cube
a)
Amount of water 
b)
Height of Ice cube
c)
Temperature the ice cube was at its highest height 
d)
Size of the ice cube
36.
Mario studied how far room temperature water would spurt out of a plastic milk carton when 3mm holes were punched at different heights from the bottom of the container. Identify the DEPENDENT variable
-3mm holes
-Distant water traveled out of carton
-Different heights of the holes in the container
-Ice water from Iceland
a)
3mm holes
b)
Distant water traveled out of carton
c)
Different heights of the holes in the container 
d)
Ice water from Iceland
37.
The following statement is a hypothesis formed about marsh grass: 
If the amount of nitrogen marsh grass receives is increased, then the height of the grass will increase, because nitrogen is an essential nutrient needed for marsh grass to grow.
What is the independent variable of the statement above? 
a)
Height of grass
b)
Amount of nitrogen
c)
Essential nutrient
d)
Amount of growth
38.
What skill is a scientist using when she listens to the sounds that an elephant makes?
a)
drawing conclusions
b)
making observations
c)
interpreting data
d)
making a hypothesis
39.
A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The dependent variable is
a)
the size of the baby alligators
b)
the gender of the baby alligators
c)
the incubator
d)
the temperature
40.
When you decide whether or not the data supports the original hypothesis, you are
a)
drawing conclusions
b)
forming a hypothesis
c)
asking questions
d)
making observations
41.
In this graph, what is the independent variable? 
a)
Population
b)
Day
c)
Species 5
42.
In this graph, what is the dependent variable? 
a)
Walla Walla Island
b)
Time
c)
Number of Deer
43.
At a middle school, the 7th graders will conduct a survey for where to go on a field trip. Which method will result in the least biased decision?
a)
to randomly ask 8th grade students who went on a field trip last year
b)
to randomly choose some 7th grade students to select a location
c)
to ask all 7th grade teachers and administrators for a location
d)
to ask the student council to choose a location
44.
The choir director in a high school wants to know how the students in the school feel about singing. If the director selects 100 girls and 100 boys to complete a survey, which method will result in a biased sample?
a)
The students will be selected from the choir
b)
The students will be selected randomly throughout the school
c)
The students will be selected on Wednesday afternoon before the choir concert
d)
The choir director will select five students from each of the forty homerooms in the school
45.
Ana wants to know the average student’s opinion of the tardy policy at her school. Which group of students should she survey in order to achieve the most accurate results?
a)
thirty students who are often tardy
b)
thirty students who are rarely tardy
c)
thirty of her friends
d)
thirty randomly selected students from her school
46.
A factory manufactures light bulbs. The factory currently has 300 boxes of light bulbs in its warehouse. To test the quality of bulbs, Alex decides to take out a sample of bulbs and test them to see if they work. Which surveying method will give him the least valid results?
a)
selecting ten boxes randomly, mixing the bulbs of these boxes together and then selecting ten bulbs randomly
b)
selecting ten boxes randomly and then selecting one bulb randomly from each box
c)
selecting one bulb randomly from every tenth box
d)
selecting one box randomly and then selecting all the bulbs from the box
47.
Describe the correlation in the graph shown.
a)
Strong Negative
b)
Strong Positive
c)
Weak Negative
d)
No Correlation
48.
Ice cream sale and shark attacks are strongly correlated, so…
a)
shark eat ice cream
b)
there is not causation
c)
ice cream causes shark attacks
d)
sharks make us eat ice cream
49.

Correlation or Causation?

a)

Correlation

b)

Causation

50.

Correlation or Causation?

a)

Correlation

b)

Causation

51.

Correlation or Causation?

a)

Correlation

b)

Causation

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