Coastal Challenges Erosion Waves and Solutions

The video discusses the allure and challenges of coastal living, focusing on the impact of storms and erosion on beaches. It explains erosion as a natural process and its consequences, such as the destruction of infrastructure. Various methods to combat erosion, including seawalls and sand dunes, are explored, highlighting their costs and effectiveness. The importance of natural beach protection through sand dunes and vegetation is emphasized, especially in the face of rising sea levels.

What natural event recently affected the east coast of Australia, causing significant beach erosion?

• An earthquake

• A series of storm systems

• A severe drought

• A volcanic eruption

What is beach erosion primarily caused by?

• Human activities

• Earthquakes

• Animal movements

• Wind and water forces

What was demonstrated using a tub of sand and water in the video?

• The process of beach erosion

• How to build a sandcastle

• The impact of pollution on beaches

• The formation of sand dunes

What happened to a daycare center in Newcastle due to beach erosion?

• It was renovated

• It was torn down

• It was relocated

• It was expanded

What is a seawall designed to do?

• Attract tourists

• Create new beaches

• Increase beach size

• Absorb wave energy

What is one limitation of human-made structures like seawalls?

• They are environmentally friendly

• They are easy to build

• They are inexpensive

• They often don't last

What natural feature helps protect beaches by absorbing wave energy?

• Rock formations

• Mangrove forests

• Sand dunes

• Coral reefs

What role does vegetation play in the stability of sand dunes?

• It provides shade

• It decorates the dunes

• It traps and holds sand in place

• It attracts wildlife

Why are sand dunes considered a natural solution to beach erosion?

• They are man-made

• They require no maintenance

• They provide a stockpile of sand

• They are expensive to maintain

What is a growing concern as sea levels rise?

• Increased tourism

• More frequent earthquakes

• Worsening beach erosion

• Decreased rainfall