Topic: PollutionSub-topic: Water Pollution

Subject: Social StudiesGrade: 8M

Teacher: Ms.HudsonDate: November 27, 2014

NEXT

What is pollution?

• Pollution is the contamination of air,

soil, or water by the discharge of

harmful substances.

NEXT

BACK

What is Water Pollution?

Throwing garbage in rivers, sea and oceans

Improper sewage disposal in ground

water

Oil spills by ships

Ships letting out warm water bodies

Ships letting out warm water bodies

Factory waste into nearby rivers

NEXTBACK

Definition of water pollution

• Water pollution is the contamination of

water bodies.

• Examples of water bodies are: lakes,

rivers, oceans, aquifers and

groundwater)BACK NEXT

Causes of water pollution

• Surface Water Pollution - Dumping of garbage in rivers, lakes, oceans and seas by humans

• Chemical Pollution -Insecticides being washed away into water bodies

• Ships letting out unwanted oil at sea. (petrol and disel)

• Chemical waste from factories in water bodies.• Farmers washing out their farms and its water

leading to water bodies. (Fertilizers and sewage) BACK NEXT

Causes of water Pollution

• Thermal pollution is a sudden increase or decrease in temperature of a natural water body..

• Cleaning of land can cause erosion into the rivers.

• Sewage generated from homes or run off from septic tanks into nearby rivers

BACK NEXT

Effects of water Pollution

• Oil spills wiping away aquatic animals

• Sewage being washed away into water bodies

• Toxic chemicals killing fauna and flora animals.

BACK NEXT

Effects of water pollution

• Contamination of drinking water

• Increase in water born diseases such as

cholera, malaria caused by mosquitoes ,

ringworm caused by dirty water

• Humans being infected with gastroenteritis,

diarrhea and vomiting.BACK NEXT

Methods To prevent Water Pollution

• Educating the public about its harmful effects

to human and the environment

• Environmental laws

• Do not dispose of household chemicals or

cleaning agents down the sink or toilet.

• Reuse, recycle and reduce.BACK NEXT

Activity Time !!!!

NEXTBACK

Question 1

• 1. What is Water Pollution?• A. Contamination of water bodies• B. Contamination of the atmosphere• C. Improper Sewage disposal on land

BACK NEXT

Question 2

2. How humans contribute to water pollution?A. Oil spills in water bodies, Factory waste,

improper sewage disposal in near by rivers.B. Spraying of chemicals on plantsC. Oil spills, factory waste and throwing garbage

on land.

NEXTBACK

Question 3

• 3. What are some effects of water pollution on humans?

• A. Cancer, Ringworm , Ebola, vomitting• B. Cholera, Chick V. And Ebola• C. Ringworm, cholera, Malaria and Diarrhea

and contamination of drinking water

BACK NEXT

Question 4

• How water pollution affect aquatic animals?• A. Fish lose their lives, destruction of coral

reefs• B. Fish can still survive and reproduce• C. The water becomes dirty and discoloured

NEXTBACK

Question 5.

• 4. What methods can be practiced to reduce water pollution?

• A. Reuse, recycle, reduce, Education and environmental laws

• B. Proper garbage disposal• C. Environmental laws

BACK NEXT

Individual work

• Create a brochure or poster on what is pollution , two causes of water pollution and two methods that can be done to prevent your select causes of water pollution

• Write a journal entry on how you feel about Today’s lesson