1 / 24

CHAPTER 15 AIR

CHAPTER 15 AIR. CLASS VI. AIR IS PRESENT EVERY WHERE AROUND US. MOVING AIR IS CALLED WIND. ACTIVITY: An empty bottle is inverted and dipped under water. Water does not enter inside bottle because the space inside the bottle is filled with air.

burt
Download Presentation

CHAPTER 15 AIR

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CHAPTER 15 AIR CLASS VI

  2. AIR IS PRESENT EVERY WHERE AROUND US. • MOVING AIR IS CALLED WIND.

  3. ACTIVITY: • An empty bottle is inverted and dipped under water. • Water does not enter inside bottle because the space inside the bottle is filled with air. • On tilting, air goes out of the bottle.Now water enters the bottle. • AIR OCCUPIES SPACE

  4. PROPERTIES OF AIR • AIR HAS NO COLOUR. IT IS TRANSPARENT. • THE ENVELOPE OF AIR AROUND EARTH IS CALLED ATMOSPHERE. ATMOSPHERE

  5. As we go higher and higher, above the suface of earth, the thickness of air becomes less . • At the top of high mountains, oxygen is less. • Mountaineers carry oxygen cylinders with them.

  6. AIR IS A MIXTURE OF GASES. COMPOSITION OF AIR - * NITROGEN -78% * OXYGEN -21% * CARBONDIOXIDE - 0.04% * WATER VAPOUR * DUST &SMOKE OTHER S

  7. WATER VAPOUR WATER VAPOUR IN AIR IS AN IMPORTANT PART OF WATER CYCLE

  8. OXYGEN • HELPS IN BURNING • ESSENTIAL FOR BREATHING

  9. ACTIVITY: • TAKE WATER IN A CONTAINER AND HEAT IT. WE OBSERVE TINY BUBBLES ON THE SURFACE OF VESSEL , AFTER SOME TIME. THESE BUBBLES COME FROM AIR DISSOLVED IN WATER.

  10. OXYGEN PRESENT IN AIR IN BETWEEN SOIL PARTICLES IS USED BY SOIL ORGANISMS. • OXYGEN DISSOLVED IN WATER IS USED BY AQUATIC ORGANISMS

  11. EARTHWORMS COME OUT OF THEIR BURROWS DURING RAIN . WATER occupis all spce in between the soil particles ,replacing air.Eatrh worms find it difficult to breath.

  12. AIR IS ESSENTIAL FOR BURNINGACTIVITY:

  13. NITROGEN • NITROGEN DOES NOT SUPPORT BURNING. • IT IS AN IMPORTANT PLANT NUTRIENT.

  14. CARBONDIOXIDE • RELEASED IN THE ATMOSPHERE DURING RESPIRATION ,BURNING, DECOMPOSITION etc.

  15. CARBONDIOXIDE • USED BY PLANTS FOR PHOTOSYNTHESIS.

  16. CARBONDIOXIDE • IT CAN EXTINGUISH FIRE.

  17. DUST • DUST PARTICLES ARE PRESENT IN AIR. • Hairs present in nasal cavity prevent the dust particles from entering into the respiratory system.

  18. SMOKE • RELEASED BY VEHICLES, FACTORIES, KITCHEN BURNING OF OTHER MATERIALS. • CONTAIN HARMFUL GASES LIKE , OXIDES OF NITROGEN, SULPHUR, CARBON etc.

  19. LONG CHIMNEYS OF FACTORIES TAKES THIS SMOKE AWAY FROM US BUT BRING IT CLOSER TO THE BIRDS.

  20. OXYGEN CYCLE PHOTOSYNTHESIS RESPIRATION [CARBONDIOXIDE] [OXYGEN]

  21. USES of AIR

  22. FILL IN THE BLANKS MIXTURE • 1.AIR IS A ----------------------OF GASES. • 2.THE ENVELOPE OF AIR AROUND EARTH IS--------------. • 3.THE MAJOR CONTENT OF AIR IS -----------------GAS. • 4. --------------------GAS IS ESSENTIAL FOR BURNING. • 5. THE GAS USED FOR PHOTOSYNTHESIS IS -----------------. • 6.EARTH WORM BREATH AIR PRESENT IN ------------ • 7.FISHES BREATH OXYGEN PRESENT IN --------------. • 8.---------------------------GAS CAN EXTINGUISH FIRE. ATMOSPHERE NITROGEN OXYGEN CARBONDIOXIDE SOIL WATER CARBONDIOXIDE

  23. SAY TRUE OR FALSE TRUE FALSE • 1.MOVING AIR IS CALLED WIND. • 2.AIR DOES NOT NEED SPCE TO OCCUPY. • 3.CARBONDIOXIDE SUPPORTS BURNING . 4. EARTHWORMS BREATHE AIR PRESENT IN SOIL. • 5. PLANTS AND ANIMALS DEPEND ON EACH OTHER FOR EXCHANGE OF OXYGEN AND CARBONDIOXIDE FROM AIR. 6.HAIRS INSIDE THE NASALCAVITY FILTER CARBONDIOXIDE PRESENT IN AIR. FALSE TRUE TRUE FALSE

More Related