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enviromental science midterm

Total questions: 151

Worksheet time: 10hrs 46mins

Name
Class
Date
1.
When should you tie back long hair or baggy clothing?
a)
When working with chemicals
b)
When working with a Bunsen burner
c)
When doing dissections.
d)
Any time you are working in the lab.
2.
When is it OK to eat or drink in the lab?
a)
Always
b)
Never
3.
If you break glassware in the lab, you should...
a)
Tell the teacher
b)
Clean it up quickly before the teacher notices
c)
Scream at the top of your lungs
4.
When in the lab...
a)
long sleeves and loose clothing should be rolled up
b)
closed toe shoes should be worn
c)
long hair should be pulled back
d)
all of the above
5.
Before leaving the lab you should always wash your hands.
a)
True 
b)
False
6.
It's fine to smell chemicals directly from their containers.
a)
True
b)
False
7.
If you get something in your eyes, how long do you need to use the eyewash station?
a)
15 - 20 seconds
b)
5 minutes
c)
15 - 20 minutes
d)
Don't use the eyewash.
8.
 If you do not understand a direction or part of a lab procedure, you should 
a)
skip it and go on to the next part.
b)
ask the instructor before proceeding
c)
try several methods until something works
d)
figure it out as you do the lab
9.
 After completing an experiment, all chemical wastes should be
a)
taken home
b)
dumped in the sink
c)
disposed of according to your instructor’s directions
d)
left at your lab station for the next class
10.
You have been injured in the laboratory (cut, burn, etc.). First you should
a)
apply first aid yourself
b)
tell the science instructor at once
c)
see a doctor after school
d)
visit the school nurse after class
11.
 The following footwear is best in the laboratory. 
a)
shoes appropriate for the weather
b)
open-toed shoes
c)
closed-toed shoes
d)
sandals
12.
Hot glass looks the same as cold glass.
a)
True
b)
False
13.
Never remove chemicals or other equipment from the laboratory.
a)
True
b)
False
14.
Chipped or cracked glassware is okay to use.
a)
True
b)
False
15.
Read all procedures thoroughly before entering the laboratory
a)
True
b)
False
16.
It’s okay to pick up broken glass with your bare hands as long as the glass is placed in the trash.
a)
True
b)
False
17.
You are allowed to enter the chemical preparation/storage area any time you need to get an item
a)
True
b)
False
18.
All chemicals in the lab are to be considered dangerous
a)
True
b)
False
19.

What does MSDS stand for?

a)

Material Safety Data Sheet

b)

Modern Safety Day Special

c)

Medium Small Data Stuff

d)

Made Something Doing Something

20.

What does the blue color on the NFPA diamond stand for?

a)

Special Information

b)

Health Hazard

c)

Flammability Hazard

d)

Reactivity Hazard

21.

What does the white color on the NFPA diamond stand for?

a)

Special Information Hazard

b)

Health Hazard

c)

Flammability Hazard

d)

Reactivity Hazard

22.

What does the yellow color on the NFPA diamond stand for?

a)

Reactivity Hazard

b)

Radioactivity Hazard

c)

Flammability Hazard

d)

Health Hazard

23.

What does the red color on the NFPA diamond stand for?

a)

Special Hazard

b)

Health Hazard

c)

Flammability Hazard

d)

Reactivity Hazard

24.

Glassware used to measure liquid volume. A very accurate tool. Graduated in mL (milliliters).

a)

beaker

b)

cup

c)

graduated cylinder

d)

Erlenmeyer flask

25.

Used to handle hot beakers.

a)

crucible tongs

b)

pot holders

c)

test tube tongs

d)

gloves

26.

Used to measure temperature in degrees Celsius or Fahrenheit.

a)

digital scale

b)

tape measure

c)

measuring stick

d)

thermometer

27.

Used to measure temperature in degrees Celsius or Fahrenheit.

a)

digital scale

b)

tape measure

c)

measuring stick

d)

thermometer

28.

A slender tube attached to a bulb and used for transferring or measuring small amounts of liquids.

a)

pipette

b)

graduated cylinder

c)

beaker

d)

pipe

29.

A device to measure the weight or mass of an object. . usually in grams

a)

digital scale

b)

Erlenmeyer flask

c)

beaker

d)

graduated cylinder

30.

Cylinders usually made from glass which are used to mix, heat, or store substances in a science lab.

a)

beakers

b)

graduated cylinders

c)

cans

d)

test tubes

31.

Used to hold hot test tubes and found in a science lab.

a)

plastic bins

b)

test tube holders

c)

zip lock bags

d)

crucible tongs

32.

Something you hold and use in a science lab to magnify something.

a)

microscope

b)

scanning microscope

c)

hand lens

d)

camera

33.

Used to measure temperature in degrees Celsius or Fahrenheit.

a)

digital scale

b)

tape measure

c)

measuring stick

d)

thermometer

34.

What Symbol?

a)

• This symbol appears when substances can irritate the skin.

• Wear gloves at all times during the lab.

• Always wash hands thoroughly after each use. Go to your teacher for first aid.

b)

• This symbol appears when care should be taken when using electrical equipment.

• Double check setup with teacher. Check conditions of wires and apparatus.

• Do not attempt to fix electrical problems. Notify your teacher immediately.

c)

• This symbol appears when a danger to the eyes exists.

• Safety goggles should be worn at all times by any one performing or observing the lab.

• Use the eye wash if needed. Notify teacher immediately.

35.
a)

• This symbol appears when care must be taken to dispose of materials properly.

• Do not dispose of these materials in the sink or trash can.

Dispose of wastes as directed by your teacher.

b)

• This symbol appears when chemical used can cause burns or are poisonous if absorbed through the skin.

• Wear goggles, gloves and an apron.

• Immediately flush the affected area with water and notify your teacher.

c)

• This symbol appears when care should be taken when using electrical equipment.

• Double check setup with teacher. Check conditions of wires and apparatus.

• Do not attempt to fix electrical problems. Notify your teacher immediately.

36.

What is the symbol?

a)

• This symbol appears when substances can irritate the skin.

• Wear gloves at all times during the lab.

• Always wash hands thoroughly after each use. Go to your teacher for first aid.

b)

• This symbol appears when there is danger involving bacteria, fungi blood, unpreserved tissue or plant matter.

• Avoid skin contact with these materials by wearing gloves.

• Notify your teacher if you suspect contact with material and wash your hands thoroughly.

c)

• This symbol appears as a reminder to use caution when handling hot objects

• Use proper protection when handling.

• Go to your teacher for first aid.

37.

What is the symbol?

a)

• This symbol appears as a reminder to use caution when handling hot objects

• Use proper protection when handling.

• Go to your teacher for first aid.

b)

• This symbol appears when substances used could stain or burn clothing.

• Wear proper protection.

• Notify teacher immediately. Use fire safety equipment if necessary.

c)

• This symbol appears when use of an open flame could cause a fire or explosion.

• Tie back hair. Avoid wearing loose clothing. Avoid open flames when using flammable chemicals. Be aware of locations of fire safety equipment.

• Notify your teacher immediately. Use fire safety equipment if applicable.

38.

What is the symbol?

a)

• This symbol appears as a reminder to use caution when handling hot objects

• Use proper protection when handling.

• Go to your teacher for first aid.

b)

• This symbol appears when substances used could stain or burn clothing.

• Wear proper protection.

• Notify teacher immediately. Use fire safety equipment if necessary.

c)

• This symbol appears when chemicals or chemical reactions could cause dangerous fumes.

• Never smell fumes directly. Wear a mask if necessary.

• Leave area and notify your teacher immediately.

39.
Identify the equipment shown here:
a)
measuring cylinder
b)
conical flask
c)
beaker
d)
volumetric flask
40.
Identify the equipment shown here:
a)
beakers
b)
flasks
c)
decanters
d)
measuring cylinders
41.
Identify the equipment shown here:
a)
beaker holder
b)
iron ring
c)
forceps
d)
test tube holder
42.
Identify the equipment shown here:
a)
acetylene torch
b)
flame thrower
c)
alcohol burner
d)
Bunsen burner
43.
Identify the equipment shown here:
a)
wire gauze
b)
flame spreader
c)
sieve
d)
mesh
44.
Identify the equipment shown here:
a)
test tube holder
b)
iron rod
c)
iron ring
d)
clamp stand
45.
Name the tool pictured
a)
Pipette
b)
Eye dropper
c)
Tweezer
d)
Forceps
46.
Identify the equipment shown here:
a)
concave glass
b)
convex glass
c)
watch glass
d)
glass plate
47.
Identify the equipment shown here:
a)
grinder
b)
evaporating dish
c)
mortar and pestle
d)
crucible
48.
Identify the equipment shown here:
a)
crucible
b)
evaporating dish
c)
mortar and pestle
d)
bowl
49.
Name this lab apparatus:
a)
wash bottle
b)
striker
c)
well plate
d)
safety glasses or safety goggles
50.
Identify the equipment shown here:
a)
crucible holder
b)
wire gauze
c)
clay triangle
d)
test tube holder
51.
Name this lab apparatus:
a)
forceps
b)
filter funnel
c)
mortar and pestle
d)
clay triangle
52.
Name this lab apparatus:
a)
test tube holder
b)
tongs
c)
thermometer
d)
test tube rack
53.
What is measured with a measuring cylinder?
a)
Passage of time
b)
Distance from one thing to another
c)
Weight of an object
d)
Volume of liquid
54.
At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the mode.
12,10,10,10,13,12,11,13,10
a)
13
b)
12
c)
11
d)
10
55.
Which number is not the mean, median, mode, or range of the data set 4, 3, 15, 11, 3, 8, 7, 5?
a)
3
b)
6
c)
12
d)
11
56.
Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Roger's scores?
a)
193
b)
127
c)
60
d)
66
57.
What is the mode?
a)
# happening the most
b)
the average
c)
biggest - smallest
d)
the middle #
58.
Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Roger's scores?
a)
193
b)
127
c)
60
d)
66
59.
Dr. Dre is a dentist. He needs to report on the average number of cavities that his patients have.
1,0,1,5,6,3,4
a)
3.33
b)
2.85
c)
3
d)
3.5
60.
To find the average of a set of numbers, add up all the items and divide by...
a)
2
b)
The minimum
c)
The maximum
d)
The number of items
61.
The scores awarded to 25 students for an assignment were as follows:
4  7  5  9  8  6  7  7  8  5  6  9  8    5  8  7  4  7  3  6  8  9  7  6  9
What is  the mode?
a)
6
b)
7
c)
8
d)
9
62.
The heights of some students are given.
158cm     172cm      164cm
164cm     167cm      159cm
 What is the range of the heights?
a)
13cm
b)
14cm
c)
164cm
d)
330cm
63.
find the median of
20 30 40 50 60
a)
50
b)
40
c)
1
d)
5
64.
Find the mean of these numbers:
2, 57, 38, 42, 6
a)
29
b)
38
c)
50
d)
145
65.
What is the mode in the set of data?
2,2,2,4,4,5,6,6,6,7
a)
2
b)
6
c)
2 and 6
d)
2,4, and 6
66.
Find the median, mode and range: 
3, 5, 7, 9, 11, 8, 3
a)
median:7  mode:3  range:8
b)
median:6  mode:3  range:7
c)
median:7  mode:3 range:8
67.
An object with which of the following densities will float on water?
a)
0.7 g/cm3
b)
1.2 g/cm3
c)
3.5 g/cm3
d)
11.4 g/cm3
68.
A block has a mass of 54g and a volume of 20cm3.  What is the density of the block?
a)
74 g/cm3
b)
1080 g/cm3
c)
34 g/cm3
d)
2.7 g/cm3
69.
A can of Coke will sink in a bowl of water.  A can of Diet Coke will float in a bowl of water.  What does this tell you about the density of the Diet Coke?
a)
it is bigger than 1
b)
it is smaller than 1
c)
it is equal to 1
d)
it is equal to -1
70.
Why do ice cubes float in a  glass of water?
a)
the ice cubes are more dense than the water
b)
the water is more dense than the ice cubes
c)
the water is more dense than the glass
d)
the ice is more dense than the glass
71.
Veal finds a gold colored rock in a river.  It has a mass of 9.65 grams and a volume of 0.5 cm3.  What is the density of the rock?
a)
10.15 g/cm3
b)
19.3 g/cm3
c)
9.15 g/cm3
d)
4.825 g/cm3
72.
Will an object with a density of 1.01 g/cm3 float or sink?
a)
float
b)
sink
73.
The following liquids are poured together in a beaker: alcohol (density=0.79), corn syrup (density=1.38), water (density=1.0), and cooking oil (density=0.93).  Which of these liquids will sink to the bottom of the beaker?
a)
alcohol
b)
corn syrup
c)
water
d)
cooking oil
74.
Mercury is a metal that is liquid at room temperature and has a density of 13.5 g/cm3.  Which of these metals would sink below the mercury if dropped into a container of mercury?
a)
gold (density=19.3 g/cm3)
b)
lead (density=11.4 g/cm3)
c)
iron (density=7.9g/cm3)
d)
aluminum (density=2.7g/cm3)
75.
What is the water cycle?
a)
the 3 forms of water
b)
the movement of water on, above, or below the surface of the Earth
c)
when water melts
d)
when clouds form
76.
What part of the water cycle does this picture show?
a)
condensation
b)
precipitation
c)
evaporation
77.
Which of these is an example of precipitation?
a)
snow
b)
air
c)
clouds
d)
vapor
78.
What is the water cycle?
a)
the 3 forms of water
b)
the movement of water on, above, or below the surface of the Earth
c)
when water melts
d)
when clouds form
79.
What is condensation?
a)
The part of the water cycle when the sun heats up water, turning it from a liquid into water vapor or steam. It rises from the ground into the air.
b)
The part of the water cycle when the water vapor in the air gets cold. The water turns back into a liquid and forms clouds.
c)
The part of the water cycle when clouds get heavy and can no longer hold the liquid water. This causes the water to fall from the sky to the earth as rain, snow, sleet, or hail.
80.
What is precipitation?
a)
The part of the water cycle when the sun heats up water, turning it from a liquid into water vapor or steam. It rises from the ground into the air.
b)
The part of the water cycle when the water vapor in the air gets cold. The water turns back into a liquid and forms clouds.
c)
The part of the water cycle when clouds get heavy and can no longer hold the liquid water. This causes the water to fall from the sky to the earth as rain, snow, sleet, or hail.
81.
Evaporation happens when the sun ___________ water and turns it into vapor.
a)
cools
b)
heats up
c)
freezes
d)
lights up
82.
What is it called when plants give off water vapor as a waste product?
a)
condensation
b)
evaporation
c)
sublimation
d)
transpiration
83.
Snow, sleet, hail, and rain are all examples of  ________________. 
a)
evaporation
b)
condensation
c)
accumulation
d)
precipitation
84.
When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.
a)
Water
b)
Atmosphere
c)
Sun
d)
Air
85.
Which one of these does not add CO2 to the atmosphere?
a)
cooking with gas
b)
planting trees
c)
burning wood
d)
riding in a bus
86.
Combustion is another word for _______________.
a)
a train
b)
a bus
c)
a dog
d)
burning
87.
What does not produce carbon dioxide?
a)
Photosynthesis
b)
Burning Fossil Fuels
c)
Animal respiration
d)
Plants decaying
88.
In what process is Carbon transformed into chemical energy?
a)
Photosynthesis
b)
Respiration
c)
Primary Production
d)
Secondary Production
89.
How does the carbon in grass become part of a lion?
a)
The lion eats the grass
b)
Carbon from grass doesn't end up in a lion. 
c)
The carbon ends up in the lion's food chain. 
d)
The lion breathes in carbon given out by the plant
90.

What converts atmospheric nitrogen to ammonia?

a)

ammonifying bacteria

b)

nitrifying bateria

c)

???????????????????????

d)

no.

91.

What do decomposing bacteria do?

a)

They are bacteria that decomposes.

b)

They break down dead organisms that have nitrogen compounds in them.

c)

They turn ammonia into nitrates.

d)

Nitrogen in the atmosphere.

92.

What converts nitrates back to atmospheric nitrogen?

a)

:C

b)

Atmospheric Nitrogen

c)

Nitrifying Nitrogen

d)

Denitrifying nitrogen

93.
240 cm = ___________ m
a)
2400
b)
24
c)
2.4
d)
0.24
94.
1000 m = ___________ km
a)
100
b)
10
c)
1
d)
0.1
95.
15.6 L = ___________ mL
a)
15,600
b)
156,000
c)
1,560,000
d)
15,600,000
96.
0.57 mL = ___________ L
a)
5.7
b)
0.057
c)
0.0057
d)
0.00057
97.
2804 mg = ___________ g
a)
0.2804
b)
2.804
c)
28.04
d)
280.4
98.
0.932 g = ___________ mg
a)
9.32
b)
93.2
c)
932
d)
9,320
99.
 159.7 g = ___________ kg
a)
0.1597
b)
1.597
c)
15.97
d)
1597
100.
 68 cm = ___________ mm
a)
0.68
b)
6.8
c)
68
d)
680
101.
 56 L = ___________ mL
a)
560
b)
5,600
c)
56,000
d)
560,000
102.
 330 cm = ___________ m
a)
3,300
b)
33
c)
3.3
d)
0.33
103.
183 cm = ___________ m
a)
0.183
b)
1.83
c)
18.3
d)
1,830
104.
What is the hazard shown in this hazard sign?
a)
Fireworks
b)
Broken Glass
c)
Explosive
d)
Corrosive
105.
What is the hazard shown in this hazard sign?
a)
Fire
b)
Goku
c)
Flammable
d)
Inflammable
106.
What is the hazard shown in this hazard sign?
a)
Corrosive
b)
Irritant
c)
Danger
d)
Caution
107.
What is the hazard shown in this hazard sign?
a)
Corrosive
b)
Irritant
c)
Danger
d)
Exclamation
108.
What is the hazard shown in this hazard sign?
a)
Explosive
b)
Corrosive
c)
Irritant
d)
High level Irritant
109.
What is the hazard shown in this hazard sign?
a)
Death
b)
Pirates
c)
Corrosive
d)
Toxic
110.
What is the hazard shown in this hazard sign?
a)
Pikachu
b)
Lightning
c)
Electrical
d)
Fault
111.
What is the hazard shown in this hazard sign?
a)
Chemical spill
b)
Toxic
c)
Biohazard
d)
Death
112.
All energy on Earth ultimately comes from what source?
a)
Water
b)
Sun
c)
Consumers
d)
Oxygen
113.
An organism that needs to eat other organisms to obtain energy is known as a:
a)
Autotroph
b)
Producer
c)
Consumer
d)
Mutualist
114.
An organism that uses sunlight to create its own food is known as a:
a)
Producer
b)
Heterotroph
c)
Consumer
d)
Decomposer
115.
What does a food chain represent?
a)
How all living organisms within a habitat are connected.
b)
All of the things that a particular animal eats.
c)
How plants create their own food.
d)
A single path of energy transfer within a habitat.
116.
What is a trophic level?
a)
Each level represented within a food chain or web.
b)
Levels of ecosystems that the world is divided into.
c)
Different levels of nutrients present within an organism.
d)
The levels of sunlight an autotroph needs to survive. 
117.
An energy pyramid represents what?
a)
How much sunlight is available for the ecosystem to use. 
b)
How much energy a particular organism needs. 
c)
How much energy is needed to build a pyramid. 
d)
The amount of energy available to the next 'feeder' in a food web.
118.
How much energy is available to be passed on to the next trophic level in an ecosystem?
a)
100%
b)
10%
c)
50%
d)
75%
119.
Why is there a limited amount of energy that can be passed on to the next feeding level?
a)
There is never enough sunlight available. 
b)
Some ecosystems have limited resources. 
c)
Organisms use some of the energy they get from eating.
d)
All the energy is available to be passed on. 
120.
Why might an organism have more than one arrow coming from them in a food web?
a)
More than one organism may eat them. 
b)
They may eat more than one other organism. 
c)
This organism gets its energy from multiple sources. 
d)
They have no resources available to them.
121.
The largest group of organisms found in a food web would be:
a)
Primary Consumers
b)
Producers
c)
Decomposers
d)
Tertiary Consumers
122.
What may happen if the snowshoe hare was removed from the food web pictured?
a)
The insects in the habitat would increase.
b)
The shrew population would decrease due to being only hawk food source.
c)
The willow tree population would decrease.
d)
Foxes would dies due to no food source. 
123.
The fox in this food web would be considered a:
a)
Tertiary Consumer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
124.
The mouse in this food web would be considered a:
a)
Primary Consumer
b)
Producer
c)
Tertiary Consumer
d)
Secondary Consumer
125.
The image provided is an example of a:
a)
Producer
b)
Heterotroph
c)
Consumer
d)
Decomposer
126.
The image provided is an example of a(n):
a)
Carnivore
b)
Herbivore
c)
Producer
d)
Autotroph
127.
The image provided is an example of a(n):
a)
Autotroph
b)
Carnivore
c)
Herbivore
d)
Decomposer
128.
Which organism do the owl and the weasel compete for in the food web?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
129.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
130.
How many carnivores are shown in this food web?
a)
6
b)
4
c)
5
d)
3
131.
What might happen if you remove a primary consumer from the ecosystem?
a)
There would be more food for secondary consumers.
b)
The number of primary consumers would increase.
c)
The number of plants would increase.
d)
The number of secondary consumers would increase.
132.
The animals that predators eat
a)
Predators
b)
Consumer
c)
DOODOO
d)
Prey
133.
An animal that eats the remains of animals that have died
a)
Fungi
b)
BUNNYS
c)
Vultures
d)
All of the above
134.
A producer in a food chain.
a)
Elephant
b)
Prey
c)
Consumer
d)
Autotroph
135.
The arrows in a food chain or web represents what?
a)
They point to the organism that is being eaten.
b)
It shows how sunlight flows within an ecosystem.
c)
They show what direction the energy is flowing between organisms. 
d)
They represent how water is transferred within a habitat.
136.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
137.
Trophic levels are represented by 
a)
squares
b)
circles
c)
pyramids
d)
lines
138.
What does every food chain start with?
a)
producers
b)
sun
c)
consumer
d)
decomposers
139.
Which animal is the apex predator?
a)
hawk
b)
lizard
c)
snake
d)
grass
140.
An organism that obtains energy by eating other organisms.
a)
Consumer
b)
Producer
c)
Decomposer
d)
Detriov
141.
An organism that uses an outside source of energy like the sun to create energy-rich food molecules.
a)
Consumer
b)
Producer
c)
Decomposer
d)
Parasite 
142.
Organisms that break down dead or decaying organisms.
a)
Decomposers
b)
Producers
c)
Consumers
143.
An organism that obtains energy by eating other organisms.
a)
Consumer
b)
Producer
c)
Decomposer
d)
Detriov
144.
Organisms that break down dead or decaying organisms.
a)
Decomposers
b)
Producers
c)
Consumers
145.
An organism that obtains energy by consuming plants.
a)
Omnivore
b)
Herbivore
c)
Carnivore
146.
An organism that uses an outside source of energy like the sun to create energy-rich food molecules.
a)
Consumer
b)
Producer
c)
Decomposer
d)
Parasite 
147.
Which axis runs horizontally?
a)
x
b)
y
148.
Which axis runs vertically?
a)
x
b)
Y
149.
On which axis is the independent variable found?
a)
z-axis
b)
w-axis
c)
y-axis
d)
x-axis
150.
On which axis is the independent variable found?
a)
z-axis
b)
w-axis
c)
y-axis
d)
x-axis
151.
Which variable is found on the y-axis?
a)
Independent
b)
Manipulated
c)
Dependent
d)
Input

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