what is filtering separating different sized particles out of a mixture

I am a student at in Uru Mānuka. In 2020 I was a year 8 and in 2021 I will be a year 9. This is a place where I will be able to share my learning with you. Please note....some work won't be edited - just my first drafts, so there may be some surface errors. I would love your feedback, comments, thoughts and ideas.
Democracy means power by the people. New Zealand is a democratic country.
Schools should have more mufti days
I agree that schools should have more mufti days. Because we hardly have mufti days we should have a mufti twice a month one, every two weeks. cause some people to find that the school uniform is uncomfortable
Cars are better than dogs agree to disagree
I disagree with this statement because dogs can be more energetic and fun to play outside with and you own them and with cats they own you. evidence I can provide is that I have 8 dogs and 5 cats
School uniform should be mandatory. agree or disagree.
I agree because if you go out
Elephants are the greatest animals. Agree or Disagree. I disagree with this statement. I believe that the lion is the greatest because the lion can kill and demolish the elephant in under an hour. The lion is and has been the king of the forest for centuries.
Topic: School holidays should be only one week Yes or No.
I disagree with this statement. For most of the two weeks, people spend time with their parents and family. If it was one week they wouldn't have much time with them. For example, I go to the west coast to see my Dad. One week flies by like nothing else but two weeks is just perfect.
Science at work.
Today I read a book called Science at work at the end we get a question, this is the question for the book.
Write about three inventions or gadgets you and your family have that are important to you. State why each is important, and what life would be like without them.
1. Lightbulb. If the lightbulb hadn't been invented or was taken away my family would go nuts cause the house gets dark quickly also stuff would get broken quickly.
2. The Engine. If the engine wasn't invented it would take so long to get to school and my family would never go anywhere.
3. The heater. If a heater when it's cold so people use a heater if it hadn't been invented my family would be cold all winter.
Hope you like it blog you later