Tsunamis and Climate Change Effects

The video tutorial discusses the causes of coastal flooding, focusing on storm surges, tsunamis, and climate change. Storm surges are temporary rises in sea level due to storms, especially in areas like the Bay of Bengal. Tsunamis are caused by earthquakes at destructive plate boundaries, leading to massive waves. Climate change contributes to coastal flooding through the release of greenhouse gases, causing global warming and melting polar ice caps, which raises sea levels.

What are the main causes of coastal flooding discussed in the video?

• Volcanic eruptions, landslides, and hurricanes

• Storm surges, tsunamis, and climate change

• Deforestation, urbanization, and mining

• Tornadoes, earthquakes, and droughts

What is a storm surge?

• A permanent rise in sea level

• A temporary rise in local sea level due to a storm

• A decrease in sea level caused by high winds

• A rise in sea level caused by melting glaciers

Which conditions are optimal for a storm surge?

• High tides and low-lying land

• Calm seas and high pressure

• Strong winds and steep cliffs

• Low tides and high mountains

How are tsunamis typically generated?

• By volcanic eruptions

• By underwater landslides

• By earthquakes at destructive plate boundaries

• By strong ocean currents

What happens to tsunami waves as they reach shallower water?

• They slow down and move closer together

• They speed up and spread out

• They maintain the same speed and distance

• They disappear completely

What is the first sign that a tsunami is approaching the coast?

• The water retreats from the shore

• The water level rises suddenly

• The sky becomes cloudy

• The wind speed increases

How does climate change lead to coastal flooding?

• By increasing the frequency of earthquakes

• By causing more volcanic eruptions

• By melting polar ice caps and raising sea levels

• By decreasing rainfall in coastal areas

Which greenhouse gases are primarily responsible for the enhanced greenhouse effect?

• Carbon dioxide and methane

• Oxygen and nitrogen

• Argon and krypton

• Helium and neon

What is the result of the enhanced greenhouse effect?

• A stabilization of global temperatures

• An increase in global temperatures

• No change in global temperatures

• A decrease in global temperatures

Which areas are most at risk from sea level rise due to climate change?

• Mountainous regions

• Desert areas

• Low-lying coastal areas

• High-altitude plateaus