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ocean acidification

Total questions: 80

Worksheet time: 3hrs 30mins

Name
Class
Date
1.
Man made carbon dioxide comes from the burning of fossil fuels.  An example of a fossil fuel is
a)
wood
b)
oil
c)
shale
2.
Ocean acidification begins with 
a)
pollution from ships
b)
carbon dioxide released from combustion
c)
dumping of waste from cities into the ocean
3.
Carbon dioxide and seawater combine to form
a)
calcium carbonate
b)
carbon monoxide
c)
carbonic acid 
4.
The H+ ion is a(n)
a)
acid
b)
base
c)
neutral
5.
An example of a marine organism that needs calcium carbonate 
a)
a crab
b)
a shark
c)
an octopus
6.
The process of burning fuel to drive a car or operate a factory is called 
a)
photosynthesis
b)
combustion
c)
respiration
7.
Very slight increases in the acidity of seawater __________  marine organisms that make shells.
a)
doesn't bother
b)
has no effect on 
c)
is unhealthy and stresses
8.
Carbon dioxide levels in the air have changed throughout earth's history.  The difference today is how ______ the change is happening.
a)
rapidly 
b)
slowly 
c)
wide spread
9.
Too many greenhouse gasses in the atmosphere may block heat from escaping into space and trap too much heat next to the Earth’s surface causing
a)
another ice age
b)
earthquakes
c)
volcanic eruptions
d)
global warming
10.
A greenhouse gas which is present in very high quantity is
a)
propane
b)
ethane
c)
CO2
d)
Methane
11.
Which is a green-house gas?
a)
Methane
b)
Oxygen
c)
Hydrogen
d)
Ammonium
12.
Which of the following are greenhouse gases?
a)
Carbon dioxide
b)
Methane
c)
Water vapour
d)
All answers are correct
13.
People depend on ocean organisms for __________________.
a)
minerals
b)
fuels
c)
food and water
d)
All of these choices
14.

In aquatic ecosystems, phytoplankton and other photosynthetic organisms appear in the upper layers of the water,but not deeper layers. Which statement explains this distribution?

a)

The deeper layers are too cold for photosynthesis to occur.

b)

The deeper layers have too little oxygen for photosynthetic organisms to survive.

c)

The deeper layers have too much carbon dioxide for photosynthetic organisms to survive.

d)

The deeper layers do not receive sunlight which is necessary for photosynthesis to occur.

15.

Carrie is conducting an experiment on a solution. The solution’s initial pH is 3.2. Then, as Carrie gradually adds Compound X into the solution, the pH increases to 9.8. Which is the most likely identity of Compound X?

a)

a strong acid, such as hydrochloric acid (HCL)

b)

a strong base, such as sodium hydroxide (NaOH)

c)

a salt, such as sodium chloride (NaCl)

d)

a solvent, such as water (H20)

16.
Marine organisms make their shells from calcium and
a)
chloride
b)
carbonate
c)
seawater
17.

What happens to 1/4 of the greenhouse gases in the atmosphere?

a)

It is released into space.

b)

It gets absorbed by the ocean.

18.
As the ocean becomes more acidic, the pH of the water
a)
increases
b)
decreases
19.

What do some marine creatures do with the carbonate ion?

a)

use it as a food source

b)

use it as a defense mechanism

c)

use it to build shells and exoskeletons

d)

use it to cool body temperatures

20.

According to this slide

a)

CO2 is causing marine life to die by "poisoning' the water

b)

CO2 is destroying sea shells

c)

CO2 is formed from the combustion of Octane

21.

According to this slide the final products of the reaction HCO3- & H+. Which are products from

a)

CO2 is synthesizing with H2O

b)

CO2 is reacting with marine life

c)

CO2 is reacting with O2

22.

This image demonstrates that

a)

There is a direct correlation with the atmospheric CO2 and the CO2 in seawater

b)

That pH of the ocean increases as the atmospheric CO2 increases

c)

That there is no correlation between pH of the ocean and atmospheric CO2

23.

A common "Antacid" would be Tums or Rolaids. These are "anti-acids", which we take when we have too much acid in our stomachs. Therefore Antacids must be made from

a)

bases

b)

O2

c)

neutral water

24.

During the lab we added CO2 to the solution once it changed colors. This caused the solution to

a)

become Acidic

b)

remain Neutral

c)

become Basic

25.
Why is the increase of Greenhouse gasses a big issue?
a)
It causes climate change and increase in the global temerature 
b)
It can lead to a major increase in Greenhouses 
c)
It leads to more factories
d)
It causes a major decrease in people
26.
The graph below shows CO2 emissions and temperatures from 1909 to 1949.  What conclusion is best supported by the graph?
a)
There is no relationship between carbon dioxide concentrations and temperatures
b)
As carbon dioxide concentrations increase, temperatures increase
c)
As carbon dioxide concentrations increase, temperatures decrease
d)
As carbon dioxide concentrations decrease, temperatures increase
27.
Why does too much carbon dioxide in the atmosphere cause climate change?
a)
It cools down our planet
b)
It blocks out UV rays
c)
It traps heat and warms up our planet
d)
It lets sunlight escape
28.
The H+ ion is a(n)
a)
acid
b)
base
c)
neutral
29.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
30.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
31.
Complete the sentence.
A substance that is more basic has a _____ pH than a substance that is acidic.
a)
lower
b)
higher
c)
the same
d)
none of the above
32.
According to the pH range which substance is more acidic than lemon juice
a)
Hydrochloric acid
b)
cabbage
c)
milk
33.
Bleach is a strong base, what is the pH level of bleach?
a)
13
b)
14
c)
1
d)
2
34.
This substance releases OH- into solution
a)
Acid
b)
Base
c)
Neutral
35.
A solution with a pH of 10 is mixed with a solution with a pH of 4.  What would the pH of the mixture most likely be?
a)
10
b)
4
c)
40
d)
7
36.

What does the blue line show?

a)

CO2 in the water

b)

Air temperature

c)

Carbon emissions

d)

pH of the water

37.

What does the orange line show?

a)

CO2 in the water

b)

Air temperature

c)

Carbon emissions

d)

pH of the water

38.

What happened to the pCO2 between 1989 and 2014?

a)

it increased by 50

b)

it decreased by 50

c)

it increased by 100

d)

it decreased by 150

39.

What happened to the pH between 1989 and 2014?

a)

it increased by 8

b)

it decreased by .5

c)

it increased by 30

d)

it decreased by 30

40.

As the pH decreases, what happens to the pCO2?

a)

it increases

b)

it decreased

c)

it stays consistent

d)

it disappears

41.

What does a pH of 8.1 mean?

a)

Neutral

b)

weak base

c)

strong base

d)

strong acid

42.

As the pH decreases, what happens to the ocean?

a)

It becomes more acidic.

b)

It becomes more basic.

43.

What was the pCO2 around 1994?

a)

about 300

b)

about 350

c)

about 325

d)

about 375

44.

What was the pH around 1989?

a)

about 8.1

b)

about 7.5

c)

about 8.5

d)

about 8.9

45.

A line of best fit (or "trend" line) is a straight line that best represents the data on a scatter plot.

This line may pass through some of the points, none of the points, or all of the points. What represents the line of best fit in this graph?

a)

straight lines

b)

dotted lines

c)

points

d)

numbers

46.

Which atmospheric gas is responsible for increasing the acidity of the ocean?

a)

Nitrogen

b)

Oxygen

c)

Carbon Dioxide

d)

Water Vapor

47.

As the ocean heats up, what happens to the amount of dissolved CO2?

a)

It increases

b)

It decreases

c)

It doesn't change

48.

Historically, has the deep ocean been a carbon sink or a carbon source?

a)

Sink

b)

Source

49.

A team of deep-sea divers and biologists is exploring the open ocean. As team members dive downward from the surface, they observe significant changes to the ocean community at a depth of about 200 meters. What is the main cause of the changes at this depth?

a)

loss of brightness of the water

b)

increasing salinity of the water

c)

increasing temperature of the water

d)

decreased oxygen concentration of the water

50.

Jill made the table below during her research on aquatic zones and living organisms.

a)

Organisms in the intertidal zone must be able to withstand very cold water.

b)

There are no producers in the benthic zone that rely on photosynthesis.

c)

Organisms in the benthic zone must be able to tolerate large amounts of oxygen.

d)

The warm water and abundant sunlight in the neritic zone limits the plankton population.

51.
Greenhouse gases, in moderate amounts, keep the Earth's temperature stable
a)
True
b)
False
52.
This process keeps Earth's temperature suitable for life.
a)
Convection Currents
b)
Greenhouse Effect
c)
Albedo Effect
d)
Water Cycle
53.
The main human activity that releases greenhouse gases is
a)
using bottled water
b)
burning fossil fuels
c)
texting on cellphones
d)
eating meat
54.
Things you can do to help decrease global warming include:
a)
Eat more ice cream.
b)
Keep your freezer door open.
c)
Keep your air conditioner on high.
d)
Turn off your lights when you’re not using them.
55.
What is the average weather for a particular time and region called?
a)
drought
b)
weather
c)
emissions
d)
climate
56.
Climate change may have an impact on the following:
a)
Energy and human health
b)
Air quality, oceans, and coastal zones
c)
Agriculture
d)
All of the above
57.
Why is the carbon cycle important?
a)
It continuously reuses and recycles carbon in the ecosystem
b)
It helps animals to digest food
c)
It takes nitrogen and oxygen out of the atmosphere
58.
Carbon is used by plants during which process?
a)
Respiration
b)
Transpiration
c)
Photosynthesis
d)
Transportation
59.
How does carbon in a grass plant get into 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 food the lion eats. 
d)
The lion breathes in carbon given out by the plant
60.
What are the end products of cellular respiration? 
a)
Carbon dioxide, Water and energy
b)
Carbon dioxide, Glucose and Water
c)
Oxygen, Glucose and energy
d)
Water, Carbon dioxide and Oxygen
61.
Carbon dioxide is created by 
a)
Burning fossil fuels 
b)
Cellular respiration
c)
Decomposing organic matter
d)
All answers are correct
62.
Increase in which gas is primarily responsible for increased global warming?
a)
Carbon dioxide
b)
Water vapor
c)
Methane
d)
Nitric oxides
63.
Which of the following adds oxygen to the atmosphere?
a)
Forest fires
b)
Photosynthesis
c)
The weathering of rocks
d)
Life processes of animals
64.
What role do the oceans play in the carbon cycle?
a)
They have no role
b)
They are a major absorber (sink) of carbon dioxide
c)
both a and b
d)
neither a nor b
65.
If the climate becomes warmer, sea levels will _____________.
a)
rise,but this will have no impact on humans
b)
fall, which will increase the amount of available land
c)
rise, causing some pacific islands to disappear
d)
fall, which will have no impact on humans
66.
What is one way that carbon enters the atmosphere?
a)
Sunlight
b)
Vehicle emissions/Exhaust
c)
Ocean uptake
d)
Rain
67.
How are fossil fuels related to the Carbon cycle?
a)
Dead plants filled with carbon can become fossil fuels
b)
They aren't related
68.
Choose one way humans can affect the carbon cycle
a)
Inhaling oxygen
b)
Exhalation of carbon dioxide
c)
Using CFCs
d)
Wearing sunscreen
69.
In the food web, which organisms release the carbon from dead things back into the environment?
a)
Producers
b)
Consumers
c)
Scavengers
d)
Decomposers
70.
How are burning of fossil fuels and volcanic eruptions similar with respect to their effects on the carbon cycle?
a)
Both remove carbon from the atmosphere.
b)
Both add carbon to the atmosphere.
c)
Both add carbon to the lithosphere.
d)
Both remove carbon from the lithosphere.
71.
Deforestation contributes to greenhouse gases by
a)
loss of trees that would otherwise remove carbon dioxide from the air
b)
as trees are cut, they release carbon dioxide
c)
increasing the amount of oxygen in the air
72.
Carbon is stored in
a)
Trees and other living things
b)
Oceans
c)
Underground in soil and fossil fuels
d)
All are correct
73.
Carbon is released into the atmosphere through all of the following ways except:
a)
respiration
b)
cow flatulence
c)
photosynthesis
d)
burning fossil fuels
74.
Which picture best represents how the amount of carbon dioxide in the atmosphere has changed over the past 500 years?
a)
top left
b)
bottom left
c)
top right
d)
bottom right
75.
Carbon dioxide and seawater combine to form
a)
calcium carbonate
b)
carbon monoxide
c)
carbonic acid 
76.
Ocean acidification begins with 
a)
pollution from ships
b)
increased carbon dioxide released from combustion
c)
dumping of waste from cities into the ocean
d)
more marine animal wastes
77.
The H+ ion is released in a solution that is
a)
acidic
b)
alkaline
c)
neutral
78.
An example of a marine organism that needs calcium carbonate
a)
a crab
b)
a shark
c)
an octopus
79.
Very slight increases in the acidity of seawater __________  marine organisms that make shells.
a)
doesn't bother
b)
has no effect on 
c)
is unhealthy and stresses
80.

What does the orange line show?

a)

CO2 in the water

b)

Air temperature

c)

Carbon emissions

d)

pH of the water

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