Ocean Acidification
Presentation
•
Science
•
10th Grade
•
Practice Problem
•
Medium
+9
Standards-aligned
Amy Hurley
Used 3+ times
FREE Resource
13 Slides • 18 Questions
1
2
3
Multiple Select
Based on the pH scale, which of the following statements is correct?
A solution with a pH of 5 is considered a base.
Pure water is more acidic than ocean water.
Ocean water is slightly alkaline.
A solution with a pH of 7 is considered an acid.
4
Open Ended
Why is it important to understand the pH scale when studying ocean acidification?
5
6
Multiple Choice
Which of the following best describes acidification?
The process of a liquid becoming more alkaline
The process of a liquid becoming more acidic
The process of a liquid maintaining a neutral pH
The process of a liquid evaporating
7
8
Drag and Drop
-oceans absorb
-Carbon dioxide then combines with water to form
-
9
10
Fill in the Blanks
A decrease in available carbonate makes it difficult for marine life to build
Type answer...
11
Multiple Choice
Which organisms are most affected by a decrease in available carbonate in the ocean?
Fish and sharks
Coral, mollusks, and sea urchins
Seagulls and crabs
Plankton and algae
12
13
Open Ended
What is a trophic cascade?
14
15
Multiple Select
What are the other impacts of acidification that we don't yet fully understand?
Organisms' ability to send chemical signals
Lowering the blood pH of fish
Changes in reproductive ability
Global warming
16
17
Fill in the Blanks
Ocean water currently has a pH of
Type answer...
18
19
Fill in the Blanks
How do scientists determine what pH levels were in the past? Scientists analyze _____ _____.
Type answer...
20
21
Multiple Choice
Which of the following changes did scientists observe in ocean sediment around 55.8 million years ago?
The sediment changed from white calcium carbonate 'chalk' to red-brown mud.
The sediment became more alkaline.
The sediment showed increased fossil diversity.
The sediment turned into pure sand.
22
23
Multiple Select
Select all the measurements that scientists can take in lab experiments to study the effects of ocean acidification on marine organisms.
Organism behavior
Energy use
Immune response
Salinity levels
24
Open Ended
What are some ways scientists can predict how marine organisms will respond to future changes in pH?
25
26
Multiple Choice
How much of human-produced carbon dioxide ends up dissolved in the ocean?
one-third
one-half
one-fifth
one-tenth
27
28
Multiple Choice
Which of the following actions can help lower your carbon footprint?
Using less energy at home
Driving more
Buying bottled water
Eating more meat
29
Fill in the Blanks
Pure water has a pH of
Type answer...
30
Open Ended
Based on what you learned about the pH scale, how does the pH of ocean water compare to pure water, and what does this tell us about ocean water's acidity or alkalinity?
31
Open Ended
What is ocean acidification and what are the causes?
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