NCERT Storms Cyclones Objective Questions
NCERT Storms & Cyclones – Objective Questions
Class: 7 | Subject: Science
Section: Air & Natural Disasters
Topic: Storms & Cyclones
Based on: CBSE Board Examination Pattern
Section: Air & Natural Disasters
Topic: Storms & Cyclones
Based on: CBSE Board Examination Pattern
Instructions: These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 7 Science examinations. Each question includes detailed explanations for strong conceptual understanding.
1. What causes winds to blow on Earth?
Answer: B. Pressure differences
Uneven heating creates high and low pressure regions. Air moves between them forming winds.
Uneven heating creates high and low pressure regions. Air moves between them forming winds.
2. A violent storm with strong winds and rain is called:
Answer: B. Cyclone
Cyclones are intense low‑pressure systems with spiraling winds and heavy rainfall.
Cyclones are intense low‑pressure systems with spiraling winds and heavy rainfall.
3. Cyclones rotate due to:
Answer: B
The Coriolis effect caused by Earth’s rotation makes cyclone winds spiral.
The Coriolis effect caused by Earth’s rotation makes cyclone winds spiral.
4. The eye of a cyclone has:
Answer: B
The eye is a low‑pressure calm region at the cyclone center.
The eye is a low‑pressure calm region at the cyclone center.
5. Cyclones gain energy from:
Answer: B
Warm moist air rising from oceans fuels cyclones.
Warm moist air rising from oceans fuels cyclones.
6. High speed winds can cause:
Answer: B
Strong winds uproot trees, damage houses, and disrupt life.
Strong winds uproot trees, damage houses, and disrupt life.
7. Instrument to measure wind speed:
Answer: B
Anemometers record wind velocity during storms.
Anemometers record wind velocity during storms.
8. Storm surges occur due to:
Answer: B
Sea water is forced toward land causing flooding.
Sea water is forced toward land causing flooding.
9. Tornadoes form mostly over:
Answer: B
Tornadoes are rotating wind funnels formed over land.
Tornadoes are rotating wind funnels formed over land.
10. Before a cyclone, people should:
Answer: B
Safety measures reduce damage and injuries.
Safety measures reduce damage and injuries.
11. Air pressure is measured using:
Answer: A
Barometers track pressure fall before storms.
Barometers track pressure fall before storms.
12. Low pressure indicates:
Answer: B
Falling pressure signals storm development.
Falling pressure signals storm development.
13. Cyclones rotate anti‑clockwise in:
Answer: A
Due to Coriolis force direction.
Due to Coriolis force direction.
14. Strong winds are caused by:
Answer: B
Greater difference = faster wind.
Greater difference = faster wind.
15. Cyclones weaken over land because:
Answer: A
They lose ocean energy source.
They lose ocean energy source.
16. Safe place during cyclone:
Answer: B
Strong shelters provide protection.
Strong shelters provide protection.
17. Heavy rains in cyclones are due to:
Answer: B
Moist air condenses into rain clouds.
Moist air condenses into rain clouds.
18. Weather satellites help in:
Answer: B
Satellites track storm movement.
Satellites track storm movement.
19. Cyclone warnings save:
Answer: B
Early alerts enable evacuation.
Early alerts enable evacuation.
20. Main cause of cyclone formation:
Answer: A
Uneven heating creates pressure systems driving cyclones.
Uneven heating creates pressure systems driving cyclones.