Coastal management - Australia's east coast

What is the main focus of Lesson 3 Coastal management - Australia's east coast ?

• Coastal biophysical processes

• Coastal erosion

• Coastal management - Australia and the Netherlands

• Warilla Beach case study

Answer explanation

The main focus of Lesson 3 Coastal management - Australia's east coast is on comparing coastal management strategies between Australia and the Netherlands.

Which of the following is a natural process in the accretion cycle but has become an issue due to human activities?

• Seawalls

• Dune erosion

• Beach nourishment

• Groynes

Answer explanation

Dune erosion is a natural process in the accretion cycle but has become an issue due to human activities, making it the correct choice.

What is a common consequence of building coastal protection works like breakwaters and seawalls?

• Improved marine biodiversity

• Exacerbated erosional problems

• Natural adjustment of the coast

• Increased tourism

Answer explanation

Building coastal protection works like breakwaters and seawalls can exacerbate erosional problems by disrupting natural sediment transport processes along the coast.

What has caused houses to collapse into the ocean along Australia's east coast?

• Volcanic activity

• Tsunamis

• Shoreline erosion

• Earthquakes

Answer explanation

Houses collapsing into the ocean along Australia's east coast are caused by shoreline erosion, not volcanic activity, tsunamis, or earthquakes.

Which coastal management strategy involves adding sand to eroded beaches?

• Seawalls

• Rock walls

• Beach nourishment

• Groynes

Answer explanation

Beach nourishment involves adding sand to eroded beaches, making it the coastal management strategy that fits this description.

What is a major downside of the coastal management strategies like rock walls and beach nourishment?

• They are sustainable long-term

• They require ongoing and expensive upkeep

• They are inexpensive

• They increase natural erosion

Answer explanation

They require ongoing and expensive upkeep

Which location is NOT mentioned as a case study for coastal erosion on Australia's east coast?

• Collaroy, NSW

• Gold Coast, QLD

• Sydney, NSW

• Byron Bay, NSW

Answer explanation

Sydney, NSW is NOT mentioned as a case study for coastal erosion on Australia's east coast.

What is the estimated time to complete Lesson 3 on Coastal management - Australia's east coast?

• 45 minutes

• 60 minutes

• 30 minutes

• 90 minutes

Answer explanation

The estimated time to complete Lesson 3 on Coastal management - Australia's east coast is 60 minutes, as indicated in the answer choices.

Which of the following is a factor influencing management responses in Australia?

• Daily Telegraph article after Collaroy storm

• All of the above

• ABC story about erosion on Kingscliff Beach

• Al Jezeera news report on beach erosion

Answer explanation

The correct choice is 'All of the above' because all the listed factors influence management responses in Australia.

What is the main issue with coastal protection works like groynes?

• They promote natural coastal processes

• They increase marine biodiversity

• They are inexpensive to build

• They prevent the flow of sediment along the shore

Answer explanation

The main issue with coastal protection works like groynes is that they prevent the flow of sediment along the shore, leading to erosion in other areas.