In metropolitan cities, the primary source of water is groundwater. This water is made available to all people in the city. However, poor infrastructure in some localities makes it difficult for some people to obtain the water.
In metropolitan cities, the primary source of water is groundwater. This water is made available to all people in the city. However, poor infrastructure in some localities makes it difficult for some people to obtain the water.
In populated metropolitan cities, the primary sources of water include groundwater and lakes. Groundwater is harvested with the help of borewells whereas pipes harvest water directly from the lakes. The harvested water is then stored in water tankers placed at strategic locations throughout the cityRead more
In populated metropolitan cities, the primary sources of water include groundwater and lakes. Groundwater is harvested with the help of borewells whereas pipes harvest water directly from the lakes. The harvested water is then stored in water tankers placed at strategic locations throughout the city.
We can help in reducing the problem of waste disposal by these methods: 1. By separating biodegradable substances from non-biodegradable substances. 2. By reducing, reusing and recycling non-biodegradable substances.
We can help in reducing the problem of waste disposal by these methods:
1. By separating biodegradable substances from non-biodegradable substances.
2. By reducing, reusing and recycling non-biodegradable substances.
Ozone (O3) is a molecule, made up of three atoms of oxygen. Ozone (O3) forms a layer in the upper atmosphere. It is very essential for the life on this planet. It shields the surface of the earth from ultra-violet radiation (UV) coming from sun as these radiations are very harmful causing skin canceRead more
Ozone (O3) is a molecule, made up of three atoms of oxygen.
Ozone (O3) forms a layer in the upper atmosphere. It is very essential for the life on this planet. It shields the surface of the earth from ultra-violet radiation (UV) coming from sun as these radiations are very harmful causing skin cancer and cataract in humans. It also does harm to the crops.
The Advantages of Nuclear Energy are: 1. Inexpensive- Nuclear power plants incur low operational costs because they rely on relatively simple operations. 2. Environmentally Friendly- Compared with other types of energy, nuclear power stands out as an environmentally friendly energy source. 3. RequirRead more
The Advantages of Nuclear Energy are:
1. Inexpensive- Nuclear power plants incur low operational costs because they rely on relatively simple operations.
2. Environmentally Friendly- Compared with other types of energy, nuclear power stands out as an environmentally friendly energy source.
3. Requires Low Amounts of Fuel.
4. Stability.
5. High Degree of Safety.
The forms of energy that can be obtained from the ocean are tidal energy, wave energy, and ocean thermal energy. There are several limitations in order to harness these energies. 1. Tidal energy depends on the relative positioning of the Earth, moon, and the Sun. 2. High dams are required to be builRead more
The forms of energy that can be obtained from the ocean are tidal energy, wave energy, and ocean thermal energy. There are several limitations in order to harness these energies.
1. Tidal energy depends on the relative positioning of the Earth, moon, and the Sun.
2. High dams are required to be built to convert tidal energy into electricity.
3. Very strong waves are required to obtain electricity from wave energy.
4. To harness ocean thermal energy efficiently, the difference in the temperature of surface water (hot) and the water at depth (cold) must be 20ºC or more.
A concave mirror is used in a solar cooker as it uses heat of the sunlight to cook food. The mirror focuses all the incident sunlight at a point. The temperature at that point increases, thereby cooking and heating the food placed at that point.
A concave mirror is used in a solar cooker as it uses heat of the sunlight to cook food. The mirror focuses all the incident sunlight at a point. The temperature at that point increases, thereby cooking and heating the food placed at that point.
The refractive index of diamond is 2.42. This means that the speed of light in diamond will reduce by a factor of 2.42 as compared to its speed in air. In other words, the speed of light in diamond is 1/2.42 times the speed of light in vacuum.
The refractive index of diamond is 2.42. This means that the speed of light in diamond will reduce by a factor of 2.42 as compared to its speed in air.
In other words, the speed of light in diamond is 1/2.42 times the speed of light in vacuum.
In water light travel faster as compare to kerosene and turpentine because the refractive index of water is lower than that of kerosene and turpentine. The speed of light is inversely proportional to the refractive index.
In water light travel faster as compare to kerosene and turpentine because the refractive index of water is lower than that of kerosene and turpentine. The speed of light is inversely proportional to the refractive index.
Find out the source of water in your region/locality. Is water from this source available to all people living in that area?
In metropolitan cities, the primary source of water is groundwater. This water is made available to all people in the city. However, poor infrastructure in some localities makes it difficult for some people to obtain the water.
In metropolitan cities, the primary source of water is groundwater. This water is made available to all people in the city. However, poor infrastructure in some localities makes it difficult for some people to obtain the water.
See lessFind out about the traditional systems of water harvesting / management in your region.
In populated metropolitan cities, the primary sources of water include groundwater and lakes. Groundwater is harvested with the help of borewells whereas pipes harvest water directly from the lakes. The harvested water is then stored in water tankers placed at strategic locations throughout the cityRead more
In populated metropolitan cities, the primary sources of water include groundwater and lakes. Groundwater is harvested with the help of borewells whereas pipes harvest water directly from the lakes. The harvested water is then stored in water tankers placed at strategic locations throughout the city.
See lessHow can you help in reducing the problem of waste disposal? Give any two methods.
We can help in reducing the problem of waste disposal by these methods: 1. By separating biodegradable substances from non-biodegradable substances. 2. By reducing, reusing and recycling non-biodegradable substances.
We can help in reducing the problem of waste disposal by these methods:
See less1. By separating biodegradable substances from non-biodegradable substances.
2. By reducing, reusing and recycling non-biodegradable substances.
What is ozone and how does it affect any ecosystem?
Ozone (O3) is a molecule, made up of three atoms of oxygen. Ozone (O3) forms a layer in the upper atmosphere. It is very essential for the life on this planet. It shields the surface of the earth from ultra-violet radiation (UV) coming from sun as these radiations are very harmful causing skin canceRead more
Ozone (O3) is a molecule, made up of three atoms of oxygen.
See lessOzone (O3) forms a layer in the upper atmosphere. It is very essential for the life on this planet. It shields the surface of the earth from ultra-violet radiation (UV) coming from sun as these radiations are very harmful causing skin cancer and cataract in humans. It also does harm to the crops.
What are the advantages of nuclear energy?
The Advantages of Nuclear Energy are: 1. Inexpensive- Nuclear power plants incur low operational costs because they rely on relatively simple operations. 2. Environmentally Friendly- Compared with other types of energy, nuclear power stands out as an environmentally friendly energy source. 3. RequirRead more
The Advantages of Nuclear Energy are:
See less1. Inexpensive- Nuclear power plants incur low operational costs because they rely on relatively simple operations.
2. Environmentally Friendly- Compared with other types of energy, nuclear power stands out as an environmentally friendly energy source.
3. Requires Low Amounts of Fuel.
4. Stability.
5. High Degree of Safety.
What is geothermal energy?
Geothermal power plants use heat of the Earth to generate electricity. This heat energy of the Earth is known as geothermal energy.
Geothermal power plants use heat of the Earth to generate electricity. This heat energy of the Earth is known as geothermal energy.
See lessWhat are the limitations of the energy that can be obtained from the oceans?
The forms of energy that can be obtained from the ocean are tidal energy, wave energy, and ocean thermal energy. There are several limitations in order to harness these energies. 1. Tidal energy depends on the relative positioning of the Earth, moon, and the Sun. 2. High dams are required to be builRead more
The forms of energy that can be obtained from the ocean are tidal energy, wave energy, and ocean thermal energy. There are several limitations in order to harness these energies.
See less1. Tidal energy depends on the relative positioning of the Earth, moon, and the Sun.
2. High dams are required to be built to convert tidal energy into electricity.
3. Very strong waves are required to obtain electricity from wave energy.
4. To harness ocean thermal energy efficiently, the difference in the temperature of surface water (hot) and the water at depth (cold) must be 20ºC or more.
What kind of mirror – concave, convex or plain – would be best suited for use in a solar cooker? Why?
A concave mirror is used in a solar cooker as it uses heat of the sunlight to cook food. The mirror focuses all the incident sunlight at a point. The temperature at that point increases, thereby cooking and heating the food placed at that point.
A concave mirror is used in a solar cooker as it uses heat of the sunlight to cook food. The mirror focuses all the incident sunlight at a point. The temperature at that point increases, thereby cooking and heating the food placed at that point.
See lessThe refractive index of diamond is 2.42. What is the meaning of this statement?
The refractive index of diamond is 2.42. This means that the speed of light in diamond will reduce by a factor of 2.42 as compared to its speed in air. In other words, the speed of light in diamond is 1/2.42 times the speed of light in vacuum.
The refractive index of diamond is 2.42. This means that the speed of light in diamond will reduce by a factor of 2.42 as compared to its speed in air.
See lessIn other words, the speed of light in diamond is 1/2.42 times the speed of light in vacuum.
You are given kerosene, turpentine and water. In which of these does the light travel fastest? Use the information given in Table 10.3.
In water light travel faster as compare to kerosene and turpentine because the refractive index of water is lower than that of kerosene and turpentine. The speed of light is inversely proportional to the refractive index.
In water light travel faster as compare to kerosene and turpentine because the refractive index of water is lower than that of kerosene and turpentine. The speed of light is inversely proportional to the refractive index.
See less