Grade 9 · Science · Unit 3 of 14
Sustainable Ecosystems
Climate, clean energy and over-population
What your child practises
Practises how human activity affects biodiversity and ecosystems, and issues such as climate change, over-population and clean energy that call for good scientific decisions.
Prince Edward Island Curriculum curriculum outcome: Biodiversity & Sustainability of Ecosystems; GCO 1 · sustainability of ecosystems, climate change, clean energy and population pressures
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
Which change is a main cause of biodiversity loss?
- habitat destruction
- more places for wildlife to live
- cleaner rivers
- more sunshine in spring
habitat destruction
Hint: Living things need a place with food, water and shelter.
Question 2
Which choice reduces the amount of waste going to landfill?
- buying more disposable items
- burning garbage in the open
- recycling and composting
- dumping garbage in streams
recycling and composting
Hint: Reuse the materials instead of throwing them out.
Question 3
Which of these is a fossil fuel?
- sunlight
- flowing water
- coal
- wind
coal
Hint: Fossil fuels formed from ancient living things.
Question 4
Which of these is a renewable energy source?
- oil
- coal
- natural gas
- wind
wind
Hint: Renewable sources are naturally replaced quickly.
Question 5
As ocean water warms, sea levels can rise partly because…
- tides stop moving and coasts get bigger
- fish disappear from every ocean of the world
- the air becomes much colder over the land
- water expands as it warms and ice on land melts
water expands as it warms and ice on land melts
Hint: Two things add to the volume of the oceans.
Question 6
Sea level rise is a concern for coastal communities because…
- tides stop completely
- fish disappear everywhere
- low land can be flooded and eroded
- the air gets colder
low land can be flooded and eroded
Hint: Think of land that sits just above the water.