Show:
Water
Atmosphere
Soil
Materials
Surprise
100
What is a solute?
A solute is anything that dissolves in another substance, which means that it's anything that gets mixed out in another substance
100
If the ozone layer didn't exist, what would happen to all the organisms? And what is it?
The ozone layer is a few kilometers up in the air and it is like a layer that is protecting us from the sunrays. If the ozone layer didn't exist all the organisms would be more vulnerable because then the sun's rays would be much stronger and hotter. It would burn so bad.
100
What is soil made of?
Soil is made up of Crumbled rock, Dead plants & Dead animals
100
What's paper made of and how?
Papers are made of firstly wood/trees that later are cut down into small woodchips that gets mixed out with other chemicals and water that turnes into a pulp (pappersmassa). Later the pulp gets flattened and the water squeezed out. The paper gets cut and there you have paper.
100
What is aluminium made of?
It's made of the rock Bauxite that later gets melted into a aluminium liquid.
200
Label the following, which one is the solute and which one is the solvent: Chocolate + Hot Milk = Hot Chocolate
Chocolate is the solute and hot milk is the solvent, and when they get dissolved in eachother the solution will be hot chocolate
200
What is Greenhouse Effect?
Greenhouse Effect is when the Sun's energy gets to the earth but when it's on it's way back to the sun it bounce back to the earth because of the dangerous gases.
200
What's the two types of soil, and what are they made of?
Mineral soil -> is made of crumbled rock Organic soil -> is made of dead animals and dead plants
200
What happens to the aluminium when it gets recycled?
The solid aluminium gets melted into a liquid and then re-shaped into something else.
200
Is aluminium made of the mineral bauxite? True or false? If it's false explain why.
It's false, aluminium is made of the ROCK bauxite.
300
How can small insects walk on water?
It is because of the surface tension. That makes the water surface stick together. So all the water molecules are really close to eachother, so the insects can sit on them.
300
What gases/chemicals are in the air and why do we need them?
In the air there is mostly Oxygen and Nitrogen but there is also Carbon Dioxide, Argon gases and some other. We need Oxygen to breath and also to make fire. We need Nitrogen as a coolant for food. And we need Carbon Dioxide for the photosynthesis, cause without it we would have no food.
300
What's the difference between rocks and minerals?
Rocks are made of different minerals, while minerals are made of combounds chemicals that contains three different ions; oxide, silicone and aluminium ions.
300
How does iron rust? and why?
Iron rusts if it gets mixed with water and oxygen, so all of them together makes rust.
300
Is water a soluble? True or False?
False because it is a solvent (ex. water) and that means that the solute (ex. milkpowder) is soluble.
400
What happens to the water during winter? and why?
It becomes less dense and freezes. Which means that the surface tension "breaks" and the watermolecules spreads out.
400
How many percent of Nitrogen is in the air?
The answer is 78% nitrogen in the air and other gases
400
Why is soil so important to life?
Soil is important to life because the plants/life gets fixed nitrogen, water and other nutrients from the soil.
400
How is paper recycled?
If you recycle paper, then instead of wood chips they use recycled paper ships and the same thing happens but instead of hurting happy healthy trees they use already used paper from old dead trees.
400
Is there Nitrogen in the air? True or False?
True. There is 78% of nitrogen in the air.
500
Du är ute i naturen och det enda du har att dricka är smutsigt vatten. Vad skulle du göra för att rena vattnet? Förklara vilket steg i vattenreningen det är.
Filtrering (sil), då skulle du kunna sila vattnet för att få bort stenar och pinnar Desinfektion (kokning), då skulle du kunna koka vattnet så att alla bakterier skulle dö.
500
What does the ozone layer do?
It protects Earth from dangerous UV rays (sun).
500
What would happen if there wasn't any soil, at all?
We wouldn't be able to live because it's the soil that gives us fixed nitrogen, nutrients from the soil and WATER. And without water, we're dead.
500
What's another way to break down paper? Give an example.
Instead of just recycle it the normal way, you could make it wet so then the paper dissolves but it doesn't dissolve like sugar does. It dissolves because paper is made of trees/wood that is a natural source that makes it break down easily.
500
Is soil made of earth, fire, water and air? True or False.
False. Because soil is made up of dead animals, dead plants and crumbled rocks.