wind storms and cyclones

Leaves of trees, banner or flags flutter when wind is blowing. Why?

• Air occupies space

• Air is a mixture of gases

• Air exerts pressure

• Air is colourless

When we blow over a paper strip it goes upward as shown in the figure given below. why?

• Blowing over the paper reduces the air pressure above the strip

• Blowing over the paper increases the air pressure above the strip

• None of these is a correct reason

• The strip will not go upward at all

Which of the following is safest way to protect yourself from lightning?

• Run to an open field

• Open an umbrella for cover

• Take shelter under a tree

• Squat low on ground

Which of the following places is most likely to be affected by a cyclone?

• Mumbai

• Puri

• Goa

• Porbandar

A fire alarm usually detects smoke in case of fire. Where should such an alarm be placed in a room?

• Near the door

• On the floor

• On any wall

• On the ceiling

The winds from oceans carry water and bring rain. These winds are called

• typhoon

• monsoon

• cyclone

• none of these

What is a cyclone?

• Winds from the oceans carrying water

• Very low pressure system with very high speed winds revolving around it

• Dark funnel shaped cloud that reaches from the sky to the ground

• None of these

Pick the odd one out

• Cyclone

• Hurricane

• Monsoon

• Typhoon

A cyclone warning can be issued

• 48 hours in advance

• 12 hours in advance

• 6 hours in advance

• 24 hours in advance

Air around us exerts pressure.

• true

• false