CLASS 8- LAND,SOIL,WATER

WHICH LAYER OF SOIL CONTAINS HUMUS AND VEGETATION?

• SUB SOIL

• TOP SOIL

• PARENT ROCK

• WEATHERED ROCK

PARENT ROCK OF SOIL DETERMINES ITS

• COLOUR

• TEXTURE

• PERMEABILITY

• ALL THE ABOVE

WHICH OF THE FOLLOWING DETERMINE THE HUMUS FORMATION IN SOIL?

• FAUNA

• FLORA

• MICRO-ORGANISM

• ALL THE ABOVE

• BOTH 1 AND 2

WHICH OF THE FOLLOWING IS/ARE RESPONSIBLE FOR SOIL DEGRADATION?

• RAIN WASH

• LANDSLIDE

• FLOODS

• ALL THE ABOVE

WHICH OF THE FOLLOWING ARE THE METHODS OF SOIL CONSERVATION

• CONTOUR PLOUGHING

• HAZARD MAPPING

• SHELTER BELT

• MULCHING

TERRACES ARE MADE ON STEEP SLOPES TO REDUCE SURFACE RUN OFF. THIS METHOD OF FARMING IS CALLED____________

• INTER CROPPING

• TERRACE FARMING

• CONTOUR PLOUGHING

• ROCK SHELTER

IT INVOLVES THE PROCESSES OF EVAPORATION, PRECIPITATION AND RUN OFF_________

• AIR CYCLE

• LAND CYCLE

• WATER CYCLE

• NONE OF THESE

WATER IS USED BY HUMAN BEINGS IN/FOR

• AGRICULTURE

• HYDROELECTRICITY

• INDUSTRIES

• ALL THE ABOVE

GROWING DIFFERENT CROPS IN ALTERNATE ROWS AT DIFFERENT TIMES IS CALLED

• INTER CROPPING

• SHELTER BELT

• TERRACE FARMING

• CONTOUR FARMING

WHAT ARE THE DIFFERENT WAYS TO CONSERVE WATER?

• USE OF SPRINKLERS

• DRIP IRRIGATION

• AFFORESTATION

• MULCHING