Which event is more likely with warmer oceans?

More rainfall and storms, More algae and less oxygen, Flooding of coasts

What is the main message of this unit?

Environmental threats are real and very solvable

What’s one disadvantage of wind and solar power?

Need lots of batteries, Infrastructure is sill expensive

What happens if ocean currents slow down?

Less oxygen mixes in ocean, Climate becomes less stable

What’s the connection between food security and oceans?

Tourism is good for income, Fish are a protein source

What happens when algae die?

They use up oxygen during decay

Why is coral bleaching dangerous?

Coral loses its main food source

Why are ecosystems with many species more stable?

More species = more backup roles

What’s an advantage of switching to renewables?

Costs less, Safer and creates jobs

What is one long-term effect of ocean acidification?

Dissolving of shellfish skeletons

What causes algae blooms to grow fast?

More nutrients from farming and warmer water

Why don’t we already use only wind and solar energy?

Energy storage is still a challenge

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S4 Quiz Threatened Environment

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Questions 30

Answers

1
Which event is more likely with warmer oceans?
More rainfall and storms
More algae and less oxygen
More algae and acidification
Flooding of coasts
2
What human activity releases nitrous oxide?
Burning plastic
Fishing
Farming with fertilisers
Cutting trees
3
Why might richer countries be more responsible for climate change?
More forests
Less pollution
More people
More historic emissions
4
What is the main message of this unit?
Ecosystems are very stable so there is no worry yet
Environmental threats are real and very solvable
Eat less rabits so there are more hawks
Save yourself only and your kids
5
What’s the best reason to reduce plastic in oceans?
It causes deadzones
It traps heat
It causes algal blooms
It harms wildlife
6
Which group is hit hardest by climate change in oceans?
LEDCs
Scientists
Rich countries
Tourists
7
Which is NOT a solution to ocean threats?
Reduce pollution
Increase fishing in farms
Protect marine areas
Cut CO₂ emissions
8
What’s one disadvantage of wind and solar power?
Unlimited energy
Need lots of batteries
They release oil
Infrastructure is sill expensive
9
Why is sea level rise a threat to people?
Less sea ice
Warmer summers
More wind
Coastal flooding
10
What happens if ocean currents slow down?
Global climate warms up
Coral bleaching stops
Less oxygen mixes in ocean
Climate becomes less stable
11
What is a sustainable action you can take?
Recycle and reduce waste
Eat more smaller fish
Buy more meat instead of fish
Burn wood away from the sea
12
Why is CO₂ a problem for oceans?
It makes waves stronger
It blocks sunlight
It turns into acids
It makes water colder
13
What do arrows in a food web show?
Direction of energy flow
Animal movement
Direction of wind
Who is strongest
14
Which gas is 30x more powerful than CO₂?
Oxygen
Nitrogen
Argon
Methane
15
What’s the connection between food security and oceans?
Tourism is good for income
Fish are a protein source
Oceans grow nutritious algal blooms
Ocean salt helps farms
16
What would happen if rabbits suddenly disappeared from a forest?
More grass grows
All of the above
Less energy moves through food web
Fewer predators survive
17
What happens when algae die?
They smother the corals
They add methane to the ocean water
They use up oxygen during decay
They produce too much oxygen
18
Why is coral bleaching dangerous?
Corals become poisonous for fish
Corals turn the ocean water acidic
Coral glows in the dark
Coral loses its main food source
19
What is coral bleaching?
Algae getting too warm and killing the coral
Oceans acidifying and dissolving the corals
Corals turning into bleach
Corals kicking out algae
20
What happens when warm water expands?
Ice melts faster
Coral grows
Ocean cools
Sea levels rise
21
Which is a possible future effect of climate change?
More oxygen
More underwater cities
More forced migration
More fossil fuel use
22
Why do dead zones harm fish?
Too warm
No light
No salt
No oxygen
23
Why are ecosystems with many species more stable?
They’re less biodiverse
They are harder to destroy
Energy stops flowing
More species = more backup roles
24
What’s an advantage of switching to renewables?
They are more reliable
Costs less
Safer and creates jobs
It will stop mining and destruction of ecosystems
25
Which best describes a food web?
A list of animals
A map of a forest
A diagram of one food chain
A network of energy flows
26
Which is abiotic?
Temperature
Rabbit
Fungi
Tree
27
What is one long-term effect of ocean acidification?
Coral bleaching and less fish
Less oxygen and suffocating corals
Dissolving of shellfish skeletons
Dissolving of coast lines
28
Why would losing coral reefs affect economies?
Less marine life to see
Coral reeds dampen waves so tourists can swim
Algal blooms cause deadzones
Coral reefs are home to many bleaches
29
What causes algae blooms to grow fast?
More nutrients from farming and colder water
More nutrients from farming and warmer water
More nutrients and more oxygen
More of nutrients and more acidic water
30
Why don’t we already use only wind and solar energy?
It’s dark in the winer
It’s too expensive
Energy storage is still a challenge
It creates more CO₂ than fossil fuels

S4 Quiz Threatened Environment Flashcards | StudBud