Pages

Thursday, May 20, 2021

Ocean Pollution - Social Studies

In social studies so far this term we have been learning about the ocean and the pollution that is filling it. So far I've learnt that most ocean pollution starts on land and slowly makes it's way into the ocean. Other things that cause marine pollution are oil spills, littering and ocean mining. 

The great pacific garbage patch is a place in the ocean where a lot of rubbish has all came together and made a patch. Organizations are currently cleaning it up little by little and say it is not hopeless but will take some effort. The garbage patch came together by all of the rubbish in the ocean being pushed by ocean currents. This garbage patch is effecting our environment in a negative way because it is killing marine life and taking over their homes. 

The pollution that is in the ocean isn't just creating patches of rubbish or washing up on shore it is also killing the marine animals. These animals rely on the ocean, it is there home. From eating the rubbish to getting trapped in it and their habitats getting destroyed most marine life are slowly fighting for their lives.

































Some things that YOU can do to help prevent more marine pollution is 
- Use recyclable products.
- Don't litter.
- Put your rubbish in the right bins. 
- Conserve water.
- Use less energy.

Wednesday, May 19, 2021

Testing for the presence of Oxygen - Science

Testing for the presence of Oxygen

Aim: To carry out a test for the presence of Oxygen Gas (02)
Equipment: A pea-sized amount of manganese dioxide (Mn02), boiling tube, bottle of hydrogen peroxide (H202), safety glasses, wooden splint, Bunsen burner, test tube rack.

Method: 
1. Light your Bunsen burner.
2. Add the manganese dioxide to the boiling tube and place it in your test tube rack. 
3. Add 2mL of hydrogen peroxide. 
4. Light a splint and let it burn for a while. 
5. Blow the splint out and insert the glowing embers into the mouth of the boiling tube. 

Observations: The mixture rose to the top of the tube after the hydrogen peroxide was added. It also made smoke and bubbles. When we put the 
splint in the tube the splint reignited. That happened because if oxygen is present the splint will reignite and that did happen so the experiment 
worked. 
Discussion: The oxygen gas from both reactants was released which is how the splint reignited. 
Conclusion: This experiment went well and it did indeed work.