ARE WE LUCKY IN THE

PHILIPPINES?(Lessons in quarter 4:

Grade 7 Science)

RICH IN NATURAL RESOURCES

•FERTILE LANDS

•HIGH DIVERSITY OF ANIMALS/PLANTS

•MINERAL DEPOSITS

•NATURAL GAS/GEOTHERMAL/WIND/WATER

ON WHAT ACCOUNT DO WE GET THESE BOUNTY?

GEOLOGIC STRUCTURE AND LOCATION IN THE

GLOBE

N

W E

S

( Pacific ocean)China sea

20 typhoons moonsoons

(amihan& habagat

Where do we get the water that we use at home?

WATERSHED – an area of land on a slope which drains its water into its

tributaries

Water people plants & animals

Watersheds rivers dams

Undergroundwater

Forest Biodiversity

“Soils were once rocks”

process illustration

CLIMATE & WEATHER

ATMOSPHERE – AIR THAT SURROUNDS THE EARTH & ALL WEATHER

EVENTS HAPPENED.

LAYER CLOSEST TO THE EARTH.CONTAINS MOST OF THE WATER VAPOR AND SO WEATHER PHENOMENA OCCURS HERE CAUSING TURBULENCE DURING AIR TRAVEL.

50 KM FROM EARTH’S SURFACE.JET AIRCRAFT FLY HERE.OZONE LAYER IS IN THIS LAYER.

AIR IS THIN & COLD.METEORS BURNSIN THIS LAYER.

SPACE SHUTTLES FLY IN THIS AREA.IT IS WHERE AURORAS ARE FOUND.80 TO 110 KM FROM THE GROUND.

SATELLITES ARE STATIONEDIN THIS AREA.

GREENHOUSE AND THE ATMOSPHERE

COMPOSITION OF THE ATMOSPHERE

NITROGEN – 78%

OXYGEN – 21 %

CARBON DIOXIDE,WATER VAPOR & OZONE ETC. – 1 %

GREEN HOUSE EFFECT&

GLOBAL WARMING

A GREENHOUSE IS USED TO GROWSEEDLINGS IN THE LATE WINTER ANDEARLY SPRING. IT USED TO PROTECT PLANTS FROM SNOWSTORM AND DUSTWEATHER. IT IS MADE OF PLASTICOR GLASS.

Earth & venus are called twinPlanets due to their sizes. Both of them have carbon

dioxide ( a green house gas) in their atmosphere.

venus

earth

Reasons :• burning of fossils fuels ( coal, petroleum, natural gas)•CFCs ( chlorofluorocarbons)

•Cutting & burning of trees

•Methane release

CHECKPOINTS:

10 K

50 K85K

490 K

500 UP

25 --- -50

-50 --

GENERALIZATION :THE EARTH’S ATM IS COMPARED TO A GREENHOUSE. LIKE THE GLASS IN A

GREENHOUSE, THE ATM ALLOWS THE HEAT OF THE SUN TO PASS THROUGH IT. THE GREENHOUSE GASES WORKS THE SAME BUT ABSORBS THE HEAT COMING

FROM THE EARTH SURFACE. GREENHOUSE EFFECT REFERS TO THE

PROCESS OF WARMING THE ATMOSPHERE.

GREENHOUSE ACTIVITY

Temperature reading

BOTTLE A TEMPERATURE

5 MIN

10 MIN

15MIN

20MIN

25MIN

BOTTLE B TEMPERATURE

5 MIN

10 MIN

15MIN

20MIN

25MIN

38.3

40.0

40.5

41.0

37.9

37.9

38.5

40.9

GRAPHICAL ANALYSISy

X0 5 10 15 20

TIME

10 ᵒ

15 ᵒ

20 ᵒ

25 ᵒ

30 ᵒ

Black – bottle ARed – bottle B

WHAT DO YOU THINK WILL HAPPEN IF A LIGHTED CANDLE

WILL BE PLACED UNDER 1 OF THE BAGS?

What happens when air is heated ?

WHEN AIR IS HEATED WARM AIR RISES

AIR MOVES TOWARD THE PLACE WHERE WARM AIR IS RISING

WHAT MAKES THE AIR MOVE?

SUN

MOON

Pressure and winds in

January

Due to the LPA in the south

Winds move from N to S passing the Pacific

Ocean

Pressure and winds From July to September

Due to the LPA in the North

Winds move from S to N passing the Indian Ocean

Winds blow from high pressure area to low

pressure area. All over the world, the pressure of the wind is not the same and that is due to the tilting of

the Earth.

Why SEASONS change?

Which hemisphere receives

direct rays from the sun?

What does it indicates With regards to

seasons?

Which hemisphere receives direct rays from the sun?

Location of the earth at different times of the year

In which month is the north pole tilted toward the sun?In which month is the north pole tilted away from the sun?