CBSE Class 7 Science – MCQ and Online Tests – Unit 8 – Winds, Storms and Cyclones
Every year CBSE students attend Annual Assessment exams for 6,7,8,9,11th standards. These exams are very competitive to all the students. So our website provides online tests for all the 6,7,8,9,11th standards’ subjects. These tests are also very effective and useful for those who preparing for any competitive exams like Olympiad etc. It can boost their preparation level and confidence level by attempting these chapter wise online tests.
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CBSE Class 7 Science – MCQ and Online Tests – Unit 8 – Winds, Storms and Cyclones
Choose the correct answer:
Question 1.
Pick the odd one out
(a) Cyclone
(b) Hurricane
(c) Monsoon
(d) Typhoon
Answer
Answer: (c) Monsoon
Question 2.
Which of the following places is most likely to be affected by a cyclone?
(a) Mumbai
(b) Puri
(c) Goa
(d) Porbandar
Answer
Answer: (b) Puri
Question 3.
Leaves of trees, banner or flags flutter when wind is blowing. Why?
(a) Air occupies space
(b) Air is a mixture of gases
(c) Air exerts pressure
(d) Air is colourless
Answer
Answer: (c) Air exerts pressure
Question 4.
When we blow over a paper strip it goes upward as shown in the figure given below. why?
(a) Blowing over the paper reduces the air pressure above the strip
(b) Blowing over the paper increases the air pressure above the strip
(c) None of these is a correct reason
(d) The strip will not go upward at all
Answer
Answer: (a) Blowing over the paper reduces the air pressure above the strip
Question 5.
In which year was Orissa hit by a cyclone?
(a) 1999
(b) 2000
(c) 2001
(d) 2004
Answer
Answer: (a) 1999
Question 6.
Following are precautions one must take in case a storm is accompanied by lightning.
(i) Do not take shelter under a tree.
(ii) Do not take shelter under an umbrella with a metallic end.
(iii) Do not take shelter in open garages, storage sheds, etc.
(iv) Do not take shelter in a bus in the open.
Which one of these is not correct?
(a) (i)
(b) (ii)
(c) (iii)
(d) (iv)
Answer
Answer: (d) (iv)
Question 7.
A cyclone warning can be issued
(a) 48 hours in advance
(b) 12 hours in advance
(c) 6 hours in advance
(d) 24 hours in advance
Answer
Answer: (d) 24 hours in advance
Question 8.
The winds from oceans carry water and bring rain. These winds are called
(a) typhoon
(b) monsoon
(c) cyclone
(d) none of these
Answer
Answer: (b) monsoon
Question 9.
What is a cyclone?
(a) Winds from the oceans carrying water
(b) Very low pressure system with very high speed winds revolving around it
(c) Dark funnel shaped cloud that reaches from the sky to the ground
(d) None of these
Answer
Answer: (b) Very low pressure system with very high speed winds revolving around it
Question 10.
A fire alarm usually detects smoke in case of fire. Where should such an alarm be placed in a room? (NCERT Exemplar)
(a) Near the door
(b) On the floor
(c) On any wall
(d) On the ceiling
Answer
Answer: (d) On the ceiling
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