Lesson Notes By Weeks and Term v4 - JHS 1
EARTH SCIENCE
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EARTH SCIENCE
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Subject: Science
Class: JHS 1
Term: 1st Term
Week: 6
Grade code: B7.2.1.1.1
Strand code: 2
Sub-strand code: 1
Content standard code: B7.2.1.1
Indicator code: B7.2.1.1.1
Theme: CYCLES
Subtheme: EARTH SCIENCE
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Water is always moving around the Earth—between rivers, lakes, oceans, the soil, plants, animals and the air. This continuous movement is called the water cycle. Understanding the water cycle helps Ghanaian learners explain everyday experiences such as why clouds form, why it rains, why clothes dry in the sun, why harmattan air feels dry, and why some communities experience floods or water shortages.
A. Natural Sources of Water (Examples in Ghana) Natural sources of water include: Rainwater (rainfall in all regions) Rivers and streams (e.g., River Pra, River Ankobra, River Densu, River Oti) Lakes (e.g., Lake Volta, Lake Bosomtwe) Oceans/Seas (Atlantic Ocean along Ghana’s coast) Groundwater (water stored underground in rocks/soil; accessed by wells and boreholes) Wetlands and lagoons (e.g., Keta Lagoon, Sakumo Lagoon)
These sources are connected by the water cycle.
B. Meaning of the Water Cycle The water cycle is the continuous movement of water from the Earth’s surface to the atmosphere and back to the Earth’s surface.
It is called a cycle because it repeats and has no true end—water keeps moving through the same stages.