Page 42 - APS(2022)_TG5 _Edisi Guru

Sains Tingkatan 5 Bab 3
Tarikh:
AKTIVITI Hujan Asid
Perbincangan 3.9 Acid Rain
Kontekstual

1. Lengkapkan petikan berikut tentang hujan asid. TP 2
Complete the following passage on the acid rain.

bahan api fosil 2 Gas-gas ini larut dalam Hujan asid
1 Pembakaran 3
di loji jana kuasa, kilang titisan air dalam terbentuk apabila
dan kenderaan bermotor atmosfera dan ditukar sulfur dioksida dan
sulfur dioksida
membebaskan kepada asid sulfurik dan oksida nitrogen larut
oksida nitrogen
dan . asid nitrik . dalam air hujan. pH air
BAB
The burning of fossil fuels in These gases dissolve in hujan adalah di bawah
power stations, factories, and motor water droplets in the atmosphere 5.0 .
3
vehicles releases sulphur dioxide and sulphuric acid Acid rain is formed
nitrogen oxides . and are converted to when sulphur dioxide and
and nitric acid .
nitrous oxide dissolve

in rain water. The pH of rain
water is below 5.0 .

4 Effects of acid rain: / Kesan-kesan hujan asid:

(a) Merosakkan daun-daun tumbuhan , maka mengurangkan fotosintesis .
Damages the leaves of plants , thereby reducing photosynthesis .
(b) Tanah menjadi berasid dan kurang sesuai untuk menanam tanaman.
Soil becomes acidic and less suitable for planting of crops.

(c) Menyebabkan larut resap ion-ion logam berat dari tanah ke dalam sungai dan tasik.
Akibatnya, fitoplankton dan organisma akuatik akan mati.
Causes leaching of heavy metal ions from the soil into rivers and lakes. As a result, phytoplankton and
aquatic organisms may die.

populasi
(d) Mengurangkan haiwan dan tumbuhan serta organisma tanah.
Reduces the population of animals and plants as well as soil organisms.
pertumbuhan
(e) Menyebabkan pemusnahan klorofil dan tisu fotosintesis, maka mempengaruhi
tumbuhan.
Causes destruction of chlorophyll and photosynthetic tissue, thus affecting plant growth .
Merosakkan
(f) bangunan, struktur batu kapur dan batu pasir, kapal terbang, kereta dan jambatan
besi.
Damages buildings, limestone and sandstone structures, airplanes, cars and iron bridges.

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03 BAB 3.indd 66 7/28/21 2:35 PM