Science (English Medium) इयत्ता ११ - CBSE Question Bank Solutions

What is a food-chain?

Give one example of a grazing food-chain identifying the various levels.

What do you understand by the term ‘food web’? Give examples.

The atmosphere is mainly heated by the:

The main reason that the earth experiences the highest temperatures in the subtropics in the northern hemisphere rather than at the equator is:

How does the unequal distribution of heat over the planet earth in space and time cause variations in weather and climate?

What are the factors that control temperature distribution on the surface of the earth?

Why is the annual range of temperature high in the Siberian plains?

Discuss the processes through which the earth-atmosphere system maintains heat balance.

Compare the global distribution of temperature in January over the northern and the southern hemisphere of the earth.

The direction of wind around a low pressure in the northern hemisphere is ____________.

While the pressure gradient force is from north to south, i.e. from the subtropical high pressure to the equator in the northern hemisphere, why are the winds north easterlies in the tropics?

What are the geostrophic winds?

What is a biome?

What are tides?

How are tides caused?

How are tides related to navigation?

Discuss the factors affecting the speed and direction of the wind.

The air that contains moisture to its full capacity:  ______.

A map bearing a scale of 1 : 4000 and larger is called ______.