9 year olds science homework
2006-10-03 04:27:25 · 15 answers · asked by helen o 1 in Science & Mathematics ➔ Chemistry
You need a clear glass jar, ping pong ball, kitchen paper and a clear bowl or basin, deeper than the jar and containing water.
Place the paper in bottom of the jar, so it can't move about.
Place the ping pong ball on the surface of the water in the bowl.
Turn the jar upside down over the ping pong ball. Press down with the jar until it touches the bottom of the bowl.
You will notice that the ping pong ball restson the bottom of the jar and the water does not get into the jar. This is because the jar stops the air from getting in and making the paper wet. Lift the jar straight out of the water and you'll see that the paper is barely wet.
Immerse the jar again.
When it touches the bottom, tilt it a little.
Bubbles escape, rise to the surface and burst. Water gets into the jar, the ball rises higher until the paper gets wet.
This is because the air inside the jar finds a way to escape. the water takes up the space which has been left by the air.
2006-10-03 04:38:39 · answer #1 · answered by lovelylexie 4 · 0⤊ 0⤋
Only real things have weight that means they are heavy or light. Weigh a ballon on sensitive scales. Then blow it up. Now weigh it again. It should be heavier. This shows that it is real.
Good luck and stay with the sciences as they are really fascinating.
Ask Mum and Dad to help with the weighing.
2006-10-03 04:34:07 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Stand a book uprigtht on on a plastic bag. Blow into the bag as if it were a balloon. (Make sure the bag doen't have any holes) The book will fall over because of the air blown into the bag.
2006-10-03 04:45:13 · answer #3 · answered by borscht 6 · 0⤊ 0⤋
You can test it for its constituent parts, ie the gases Nitrogen (78%), Oxygen (21%), small amounts of argon (1.9%), neon, helium, methane, krypton, hydrogen, nitrous oxide and xenon. Other gases occur in variable concentrations: water vapour, ozone, carbon dioxide, sulphur dioxide and nitrogen dioxide. Air also contains trace amounts of ammonia and hydrogen sulphide. The variable constituents are important for maintaining life. Each of these gases can be shown to be present by experiment.
2006-10-03 05:08:19 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Play a wind instument! No the best suggestion is to blow into water through a straw, then u can see the bubbles which is a great way to actually be able to say look there it is!
2006-10-05 04:41:00 · answer #5 · answered by Thesmileyman 6 · 0⤊ 0⤋
You show how air is real by blowing up a balloon
2006-10-03 04:30:50 · answer #6 · answered by Juelz 1 · 1⤊ 0⤋
No, no - forget the balloon, this is more fun.
Blow up your cheeks with air so your look like a pocket gopher.
Then press your cheeks to expel the AIR!
:-O
2006-10-03 04:37:03 · answer #7 · answered by Moebuggy 3 · 0⤊ 0⤋
Take it away and see what happens. I would go with the wind moving things and relate it to molecules bombarding things and applying pressure. Also, bubbles are a good example.
2006-10-03 12:03:04 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Flap a piece of paper and wind, which is the movement of air, is created.
Flap a plastic bag and it "inflates" magically!
2006-10-03 13:19:55 · answer #9 · answered by Kemmy 6 · 0⤊ 0⤋
When you feel the wind, or blow on something and it moves, that proves that the air is real.
2006-10-03 04:29:38 · answer #10 · answered by Anonymous · 0⤊ 0⤋