A comprehensible PowerPoint presentation for teachers and students.

2. At the end of the lesson, the learner will be able
to:
1. recognize how water is distributed on
earth;
2. identify the various water resources on
earth;
3. explain how different activities affect
the quality and availability of water for
human use;
4. explain how energy (hydroelectric) is
harnessed from flowing water; and
5. suggest ways of conserving and
protecting water resources.

3. • Water is vital natural resources which covers
71% of the Earth’s area. Majority 97% of the
water is found in the ocean which is
considered as saltwater and only 3% is
freshwater. About 69% of the water is trapped
in icecaps and glaciers and 30% is found
underground.

6. • They are made up of salt water and are very large
in size. Oceans are important for providing food,
through the many fish species that inhabit the
oceans, for air quality and for transport through
sea vessels like ships and boats.

7. • They are smaller
bodies of water than
oceans. Like oceans,
seas are source of a
wide variety of food,
and are also used for
transportation.

8. • They are bodies of water
completely surrounded by
land. Lakes are larger
than ponds and they were
formed long time ago.

9. • They are large flowing
water bodies that drain
into a sea or an ocean.
Rivers carry
freshwater that usually
originates in
mountains or elevated
areas, and are added
by smaller bodies of
water. Rivers also
provide a source of
energy in the form of

10. Bay Gulf Falls
Cove Dam Strait

11. • It is the largest
source of
freshwater readily
accessible to
humans. It
comes from the
zone of saturation
produced from
filtration of
rainwater.

12. • The porosity and permeability of rocks
regulate the movement of water
underground. Porosity refers to the ratio
of the space taken up by the pores in a
soil, rock or other material to its total
volume. Permeability is the capability of
the soil or rock to make a fluid pass
through the pore spaces.

14. 1.Agriculture
2.Littering
3.Chemical by-products
4.Industry

15. • It is the movement of water from earth to
the atmosphere and back again.
• Evaporation takes place when heat
energy changes liquid water to water
vapor.
• Condensation occurs when water vapor
in the upper atmosphere cools and
changes back to liquid.
• When clouds become saturated with
water, they fall back down to the Earth as
precipitation.

17. • Hydropower plants capture the energy
of falling water to generate electricity.
A turbine converts the kinetic energy
of falling water into mechanical
energy Then a generator converts the
mechanical energy from the turbine
into electrical energy. However,
hydroelectric power is one of the
cheapest methods of energy
production.

19. 1. Water your lawn in the early morning.
2. Group plants together.
3. Find out if you have a leak in your water
pipes at home.
4. Repair dripping faucets.
5. Make a timing to your shower under five
minutes and installing low-flow
showerheads.
6. Use waterless soap and avoid harmful

20. 7. Use minimal amount of fertilizer on lawns
and gardens.
8. Don’t use pesticides when a rain shower
is expected.
9. Don’t remove trees and bushes along the
streams.

22. • Quinto, M.P. and Florida, J.S. (2017).Earth Science for
Senior High. Mutya Publishing House, Inc. pp. 69-89
• Baleva, R.E. et al (2017). Earth Science for Senior High.
Mutya Publishing House, Inc. pp. 75-82
• All images from Google Images