Fill in the blanks.
i) Air around us exerts ____.
ii) The moving air is called _.
iii) The main cause of wind movement is uneven_ on the earth.
iv) High speed wind can cause cyclone in regions of ____
pressure.

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Solution

i) Pressure.
ii) Wind.
iii) Heating.
iv) Low.

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Question 9

Fill in the blanks.
(i) Air around us exerts___
(ii) The moving air is called ___
(iii) The main cause of wind movement is uneven ___ on the earth.
(iv) High speed wind can cause cyclone in regions of ___ pressure

Fill in the blanks:
1. ................................. is a device to measure wind speed.
2. Envelop of air surrounding the earth surface ................................. .
3. Air ................................. on heating.
4. An alternative movement of hot and cold air is called ................................. current.
5. Air moves from a region of ................................. pressure to a region of ................................. pressure.
6. A cyclone is also called ................................. .
7. A hazard causing destruction is also called a ................................. .
8. ................................. are warm moist wind blowing from the sea to the land.

Q. Fill the missing word in the blank spaces in the following statements:

(a) Wind is ________ air.

(b) Winds are generated due to ________ heating on the earth.

(d) Air moves from a region of __________ pressure to a region of ________ pressure.

Fill the missing word in the blank spaces in the following statements:

(a) Wind is ________ air.

(b) Winds are generated due to ________ heating on the earth.

(d) Air moves from a region of __________pressure to a region of ________ pressure.

Give reasons:
(a) A gas fills completely the vessel in which it is kept.
(b) A gas exerts pressure on the walls of the container.
(c) A wooden table should be called a solid.
(d) We can easily move our hand in air but to do the same through a solid block of wood we need a karate expert.

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Fill in the blanks.i) Air around us exerts ________.ii) The moving air is called _________.iii) The main cause of wind movement is uneven_______________ on the earth.iv) High speed wind can cause cyclone in regions of ______________pressure.

i) Pressure.ii) Wind.iii) Heating.iv) Low.

Fill in the blanks.
i) Air around us exerts ____.
ii) The moving air is called _.
iii) The main cause of wind movement is uneven_ on the earth.
iv) High speed wind can cause cyclone in regions of ____
pressure.

i) Pressure.
ii) Wind.
iii) Heating.
iv) Low.