Describe an activity to explain the effect of flowing water on the top soil and write your conclusion.
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21
In this activity, students will build a model to simulate parts of the water cycle. They will be able to recognize and explain the essential elements of the water cycle.
Background
Water, in its different forms, cycles continuously through the lithosphere, hydrosphere, atmosphere, and biosphere. Water evaporates into the atmosphere from the land and the sea. Plants and animals use and reuse water and release water vapor into the air. Once in the air, water vapor circulates and can condense to form clouds and precipitation, which fall back to earth. At one time or another, all of the water molecules on earth have been in an ocean, a river, a plant, an animal, a cloud, a raindrop, a snowflake, or a glacier!
As far as we know, earth is the only planet with water in three phases: solid, liquid, and gas. The phase of water is determined by its temperature and pressure.
Water is essential for life on earth. It is recycled through the water or hydrologic cycle, which involves the following processes:
Evaporation, the changing of water from a liquid to a gas
Condensation, the changing of water from a gas to a liquid
Sublimation, the changing of water from a solid to a gas
Precipitation, the process by which water molecules condense to form drops heavy enough to fall to the earth's surface
Transpiration, the process by which moisture is carried through plants from roots to leaves, where it changes to vapor and is released to the atmosphere
Surface runoff, the flowing of water over the land from higher to lower ground
Infiltration, the process of water filling the porous spaces of soil
Percolation, groundwater moving in the saturated zone below the earth's surface
Through these processes, the amount of water on earth remains nearly constant and is continually recycled through time. Water molecules may remain in one form for a very long period of time (for example, water molecules can be locked in Antarctic ice for thousands of years) and in other forms for very short times (for example, water molecules in desert rainstorms spend mere minutes as surface water before evaporating into vapor again).
Background
Water, in its different forms, cycles continuously through the lithosphere, hydrosphere, atmosphere, and biosphere. Water evaporates into the atmosphere from the land and the sea. Plants and animals use and reuse water and release water vapor into the air. Once in the air, water vapor circulates and can condense to form clouds and precipitation, which fall back to earth. At one time or another, all of the water molecules on earth have been in an ocean, a river, a plant, an animal, a cloud, a raindrop, a snowflake, or a glacier!
As far as we know, earth is the only planet with water in three phases: solid, liquid, and gas. The phase of water is determined by its temperature and pressure.
Water is essential for life on earth. It is recycled through the water or hydrologic cycle, which involves the following processes:
Evaporation, the changing of water from a liquid to a gas
Condensation, the changing of water from a gas to a liquid
Sublimation, the changing of water from a solid to a gas
Precipitation, the process by which water molecules condense to form drops heavy enough to fall to the earth's surface
Transpiration, the process by which moisture is carried through plants from roots to leaves, where it changes to vapor and is released to the atmosphere
Surface runoff, the flowing of water over the land from higher to lower ground
Infiltration, the process of water filling the porous spaces of soil
Percolation, groundwater moving in the saturated zone below the earth's surface
Through these processes, the amount of water on earth remains nearly constant and is continually recycled through time. Water molecules may remain in one form for a very long period of time (for example, water molecules can be locked in Antarctic ice for thousands of years) and in other forms for very short times (for example, water molecules in desert rainstorms spend mere minutes as surface water before evaporating into vapor again).
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18
Level a top soil in atleast a gentle ground .Pour some water over it gently , you will notice that , the top soil containing humus is swept away by water wave.The top soil has most of the nutrients required for health growth of plant.As this nutrients get removed ,it will leave a little or no nutrient to plant .
EK
Answered by
18
Level a top soil in atleast a gentle ground .Pour some water over it gently , you will notice that , the top soil containing humus is swept away by water wave.The top soil has most of the nutrients required for health growth of plant.As this nutrients get removed ,it will leave a little or no nutrient to plant .
EK
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