How can global warming impact island and coastal communities?

Rising sea levels may lead to property loss and population relocation

Which of the following is NOT a line of evidence used to study historical climate?

Fossilized pollen in freshwater lakes

How does a weakened polar jet stream affect weather patterns?

It leads to extreme cold spells and dry spells

What do Milankovitch cycles explain?

The natural changes in Earth’s climate caused by changes in orbit and tilt

What causes ocean acidification?

Uptake of excess atmospheric CO₂ by ocean water

What is coral bleaching?

Coral losing algae due to increased temperature stress

Why is reproductive timing especially vulnerable to ocean warming?

Temperature changes disrupt the biological cues used by many species

Which of the following is a human activity that contributes to ocean acidification?

Fossil fuel combustion and deforestation

How does a lower ocean pH impact shell-forming organisms?

Their shells dissolve more easily

How does increased H⁺ concentration in seawater affect marine organisms?

It reduces available carbonate ions, weakening shells

What happens when zooxanthellae leave the coral?

Coral loses its main food source

How does permafrost melting contribute to climate change?

It releases methane and CO₂ from anaerobic decomposition

Why is the change in ocean pH from 8.2 to 8.1 considered significant?

The pH scale is logarithmic, so small changes reflect big shifts in acidity

Why are carbonate ions important in the ocean?

They are essential for calcification in shell-building organisms

What is one major effect of global climate change on atmospheric circulation?

The Hadley cell is expanding, shifting dry zones toward the poles

Why are barrier islands at risk due to climate change?

Rising sea levels can submerge them

studbud

9.5 and 9.7

21 termsStudBud Administration21 plays

Imported from external platform

Flashcards21 cardsFPractice quizPHost liveL

Questions 21

Answers

1
How can global warming impact island and coastal communities?
Warming improves agricultural productivity near the coast
Rising sea levels may lead to property loss and population relocation
It increases property values due to stronger ocean currents
Coral reef expansion protects coastlines from sea level rise
2
Which of the following is NOT a line of evidence used to study historical climate?
Air bubbles trapped in ice cores
16O/18O isotope ratios in ice cores
Foraminifera shell species in ocean sediments
Fossilized pollen in freshwater lakes
3
What is the primary cause of ocean warming?
The natural heat of ocean currents
Greenhouse gases trapping heat
Plate tectonics releasing thermal energy
Increased volcanic activity
4
What does carbonic acid dissociate into?
Sulfur and carbonate
Hydrogen and carbon monoxide
Oxygen and calcium ions
Hydrogen and bicarbonate ions
5
How does a weakened polar jet stream affect weather patterns?
It leads to extreme cold spells and dry spells
It increases stable weather across the globe
It strengthens the Hadley cell circulation
It improves the predictability of precipitation
6
What do Milankovitch cycles explain?
The patterns of sea level rise over time
The changes in ocean acidity levels
The natural changes in Earth’s climate caused by changes in orbit and tilt
How humans contribute to rising greenhouse gases
7
What causes ocean acidification?
Decrease in atmospheric oxygen
Uptake of excess atmospheric CO₂ by ocean water
Increase in ocean salinity
Ocean water releasing CO₂ into the air
8
What is coral bleaching?
Coral absorbing too much carbon dioxide
Coral losing pigmentation due to lack of sunlight
Coral turning white due to acid rain
Coral losing algae due to increased temperature stress
9
Why is reproductive timing especially vulnerable to ocean warming?
Temperature changes disrupt the biological cues used by many species
Warming delays fish maturity
Most fish require ice to lay eggs
Warmer water leads to species extinction before reproduction
10
Which of the following is a human activity that contributes to ocean acidification?
Fossil fuel combustion and deforestation
Use of nitrogen-based fertilizers
Plastic pollution
Overfishing
11
How does a lower ocean pH impact shell-forming organisms?
They produce more calcium carbonate
Their shells dissolve more easily
They form stronger shells
Their reproductive rates decrease
12
How does increased H⁺ concentration in seawater affect marine organisms?
It makes carbonate ions more available, making shells stronger
It reduces available carbonate ions, weakening shells
No affect
It causes marine organisms to grow faster
13
What happens when zooxanthellae leave the coral?
Coral loses its main food source
Coral becomes more colorful
Coral grows faster
Coral loses its main predator
14
Which of the following is NOT an impact of ocean warming?
Reduced oxygen availability
Coral bleaching
Disrupted migration and reproduction
Increased fish fertility
15
When CO₂ dissolves in seawater, what is the first chemical it forms?
Nitric acid
Carbon monoxide
Carbonic acid
Calcium carbonate
16
How does permafrost melting contribute to climate change?
It reduces cloud cover, warming the atmosphere
It increases freshwater availability for agriculture
It creates large lakes that reflect sunlight
It releases methane and CO₂ from anaerobic decomposition
17
Why is the change in ocean pH from 8.2 to 8.1 considered significant?
It has no real impact because the pH scale is linear, so changes are small
The pH scale is logarithmic, so small changes reflect big shifts in acidity
It signals the end of coral reef ecosystems
It represents a 30% increase in ocean oxygen
18
Why are carbonate ions important in the ocean?
They help with photosynthesis in algae
They provide nutrients to plankton
They neutralize acids in coral reefs
They are essential for calcification in shell-building organisms
19
What is one major effect of global climate change on atmospheric circulation?
The Hadley cell is expanding, shifting dry zones toward the poles
Polar cells are expanding toward the equator
Trade winds are intensifying and moving south
Hadley cells are shrinking due to cooling equator
20
What happens to ocean oxygen levels as water warms?
Warmer water holds less oxygen
Oxygen levels increase
Oxygen becomes more stable
Warm water releases oxygen into the atmosphere
21
Why are barrier islands at risk due to climate change?
Rising sea levels can submerge them
They are expanding due to thermal expansion
They are unaffected since they float on water
Their elevation increases with global warming

9.5 and 9.7 Flashcards | StudBud