This week we looked at the health of our oceans.
Why is the ocean important to us?
What is affecting the ocean?
How can we help look after the ocean?
We specifically looked at coral reefs, as indicators of ocean health. We looked at how global warming and acidification, due to CO2 being absorbed into the water, is damaging the reefs - bleaching and killing the coral.
We tried mixing CO2 and water with an indicator in it (blowing into purple cabbage water). It turned a slight pink which indicates a weak acid. For the scientists - H2O+CO2 = H2CO3 (carbonic acid)
Oceans are thought to absorb almost half the CO2 from the atmosphere, which is produced by burning fossil fuels.
There are some great little videos that help understand these very difficult concepts.
Importantly, we looked at ideas to HELP our oceans - kids came up with ideas like using electric cars (but what about the electricity stations - they cause pollution, someone stated) So then we looked at ideas for clean energy like solar and wind farms.
Children talked about walking or biking instead of using cars all the time, using less electricity, not dropping rubbish, using less plastic etc
Back in May I shared the recipe for making indicator solution with purple cabbage. It's a fun way to experiment with everyday substances to identify acids and bases. Here it is again...
Hot tap water
WEEK FOUR - there will not be Quest next week sorry as I am taking the TravelWise Team to a TravelWise Celebration on Wednesday, and two teams to the EPro8 engineering challenge on Thursday (instead of working Tuesday). Year 3-6's can look at their penpal information - watch the video, read information and discuss next week's topic 'A Groundbreaking Crisis' with their penpals.
WEEK FIVE - we will be looking at people who are helping our planet - starting with the 'Black Mambas' who are working to protect Rhinos.
SUSTAINABILITY CHALLENGE - Wenderholm Regional Park 31st October. We took 3 teams to participate in this - a fun day full of map reading, team work and problem solving while learning about caring for our environment. There were about 350 students from many schools there - a great day! Here are a few pictures of our day - complete with a couple of the challenge stations - predator recognition, and first aid.