Secondary School (English Medium) (5 to 8) कक्षा ७ - CBSE Question Bank Solutions for Science

Soil conservation measures are mainly aimed at protecting which of the following?

Read the following statements with reference to soil.

1. Weathering is a very fast process of soil formation.
2. Percolation of water is faster in sandy soils.
3. Loamy soil contains only sand and clay.
4. Top soil contains the maximum amount of humus.

Choose the correct statements from the above.

Unscramble the following jumbled word related to soil.

\[\boxed{\text{S}}\]\[\boxed{\text{U}}\]\[\boxed{\text{H}}\]\[\boxed{\text{U}}\]\[\boxed{\text{M}}\]

Unscramble the following jumbled word related to soil.

\[\boxed{\text{I}}\]\[\boxed{\text{L}}\]\[\boxed{\text{O}}\]\[\boxed{\text{S}}\] \[\boxed{\text{F}}\]\[\boxed{\text{I}}\]\[\boxed{\text{P}}\]\[\boxed{\text{R}}\]\[\boxed{\text{O}}\]\[\boxed{\text{L}}\]\[\boxed{\text{E}}\]

Unscramble the following jumbled word related to soil.

\[\boxed{\text{M}}\]\[\boxed{\text{O}}\]\[\boxed{\text{A}}\]\[\boxed{\text{L}}\]

Unscramble the following jumbled word related to soil.

\[\boxed{\text{G}}\]\[\boxed{\text{I}}\]\[\boxed{\text{N}}\]\[\boxed{\text{R}}\]\[\boxed{\text{H}}\]\[\boxed{\text{E}}\]\[\boxed{\text{T}}\]\[\boxed{\text{W}}\]\[\boxed{\text{E}}\]\[\boxed{\text{A}}\]

Unscramble the following jumbled word related to soil.

\[\boxed{\text{A}}\]\[\boxed{\text{T}}\]\[\boxed{\text{O}}\]\[\boxed{\text{N}}\]\[\boxed{\text{I}}\]\[\boxed{\text{E}}\]\[\boxed{\text{R}}\]\[\boxed{\text{P}}\]\[\boxed{\text{C}}\]\[\boxed{\text{L}}\]

How can a farmer convert acidic soil to neutral soil?

A man digging a pit found that he could dig with ease initially but digging became difficult as he went deeper. He could not dig beyond a depth of 5 feet. Provide a suitable scientific explanation.

Locate the following zones given as boxed items in figure which shows a diagram of soil profile.

Rajasthan is a desert state in India. Once while travelling to Rajasthan by train, Boojho observed several streams and rivulets of rain water during the journey but to his surprise, he did not see streams of water in the desert region even during rains. Help Boojho find a suitable explanation for this.

Match the animals in Column I with their natural place of dwelling (habitat) in Column II.

Gardeners gently dig up the soil around the roots of garden herbs (plants) frequently. Give reasons.

Several terms related to soil are hidden in the squares given in figure. Spot them and make a list. Two examples are given for you.

A bus travels 54 km in 90 minutes. The speed of the bus is ______.

The correct symbol to represent the speed of an object is ______.

Paheli and Boojho have to cover different distances to reach their school but they take the same time to reach the school. What can you say about their speed?

If Boojho covers a certain distance in one hour and Paheli covers the same distance in two hours, who travels at a higher speed?

A spaceship travels 36,000 km in one hour. Express its speed in km/s.

When an electric current flows through a copper wire AB as shown in the following figure, the wire