Practicing Class 8 Science MCQ and Class 8 Science Chapter 6 Pressure, Winds, Storms, and Cyclones MCQ Questions Online Test with Answers daily helps in time management.
Class 8 Pressure, Winds, Storms, and Cyclones MCQ with Answers
MCQ on Pressure, Winds, Storms, and Cyclones Class 8
Class 8 Science Chapter 6 Pressure, Winds, Storms, and Cyclones MCQ Questions with Answers
Question 1.
Which of the following defines pressure in terms of force and area?
(a) Pressure = Force/Area
(b) Pressure = Force ×Area
(c) Pressure = Area / Force
(d) Pressure = Force /[Area ]2
Answer:
(a) Pressure = Force/Area
Question 2.
Which of the following is based on the principle of more pressure due to less area?
(a) Carrying loads with broad straps
(b) Lifting a bucket with a broad handle
(c) Cutting fruit with a sharp knife
(d) Wearing shoes with thick soles
Answer:
(c) Cutting fruit with a sharp knife
Question 3.
Why are overhead water tanks placed at a height?
(a) To keep the water cool
(b) To reduce water usage
(c) To protect it from animals
(d) To increase pressure in the pipes and ensure a good water flow
Answer:
(d) To increase pressure in the pipes and ensure a good water flow
Question 4.
Which part of the dam is broader?
(a) Top
(b) Middle
(c) Base
(d) Both (a) and (b)
Answer:
(c) Base
Question 5.
Liquid exerts pressure
(a) Only at the bottom
(b) In all directions
(c) Only at the top
(d) Only on the walls
Answer:
(b) In all directions
Question 6.
What helps in predicting cyclones in advance?
(a) Thermometers
(b) Barometers
(c) Lightning rods
(d) Weather satellites
Answer:
(d) Weather satellites
Question 7.
What safety measure should you follow during lightning?
(a) Stay away from water
(b) Use an umbrella with metal rod
(c) Lie flat on the ground
(d) Stand under a tree
Answer:
(a) Stay away from water
Question 8.
What happens when high-speed wind blows over the roof of a house?
(a) The house becomes warmer
(b) Air pressure above the roof decreases
(c) Air pressure above the roof increases
(d) Air pressure inside the house becomes zero
Answer:
(b) Air pressure above the roof decreases
Question 9.
Why does land breeze blow at night?
(a) A low-pressure area forms over the land
(b) A high-pressure area forms over the sea
(c) The land remains warmer than the sea at night
(d) The sea remains warmer than the land at night
Answer:
(d) The sea remains warmer than the land at night
Question 10.
Air is observed to move from balloon B to balloon A. What can be concluded about the air pressure in two balloons?
(a) Balloon A has higher air pressure than balloon B
(b) Balloon B has higher air pressure than balloon A
(c) Both balloons have the same air pressure
(d) Air moves from lower pressure to higher pressure
Answer:
(b) Balloon B has higher air pressure than balloon A
Pressure, Winds, Storms, and Cyclones Class 8 Assertion-Reason Type Questions
Directions (Q. No. 1 to 4): Each question below consists of an Assertion (A) and a Reason (R).
Use the following key to choose the appropriate answer.
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not the correct explanation of A
(c) A is true but R is false.
(d) A is false but R is true.
Question 1.
Assertion (A): Sea breeze blows from the sea towards the land during the day.
Reason (R): During the day, land heats up faster than water, creating a low-pressure area over land.
Answer:
(a) Both A and R are true and R is the correct explanation of A
Question 2.
Assertion (A): Lightning conductors are made of metal.
Reason (R): Metals are good conductors of electricity and allow charges to pass easily.
Answer:
(a) Both A and R are true and R is the correct explanation of A
Question 3.
Assertion (A): It is safer to keep doors and windows closed during a storm.
Reason (R): Keeping doors and windows open reduces the pressure difference between the inside and outside of the house, preventing the roof from blowing off.
Answer:
(d) A is false but R is true.
Question 4.
Assertion (A): Atmospheric pressure can be observed in daily life.
Reason (R): Air is weightless and cannot exert pressure.
Answer:
(c) A is true but R is false.
Pressure, Winds, Storms, and Cyclones Class 8 Fill in the blanks
Question 1.
The centre of a cyclone is called the ……….., where the wind is calm.
Answer:
eye of the cyclone
Question 2.
The SI unit of pressure is …………
Answer:
N/m2
Question 3.
The local name of thunderstorms in West Bengal is …………
Answer:
Kalboishakhi
Question 4.
During a sea breeze, wind blows from ………..to …………
Answer:
sea, land
Question 5.
A storm accompanied by thunder and lightning is called a …………
Answer:
thunderstorm
Pressure, Winds, Storms, and Cyclones Class 8 True or False
Question 1.
It is dangerous to use an umbrella with a metallic rod during lightning.
Answer:
True
Question 2.
Pascal is the unit of force.
Answer:
False
Question 3.
Warm air is lighter than cold air.
Answer:
True
Question 4.
Air does not exert any pressure.
Answer:
False
Question 5.
The base of a dam is made broader to resist higher water pressure.
Answer:
True
Pressure, Winds, Storms, and Cyclones Class 8 Match the following
Question 1.
| Column A | Column B |
| (i) Lightning conductor | (a) Pressure exerted by air on all objects |
| (ii) Cyclone | (b) Causes land and sea breeze |
| (iii) Atmospheric pressure | (c) Spinning system of clouds, winds, and rain |
| (iv) Cyclone shelter | (d) Transfers electric charge safely to the ground |
| (v) Uneven heating of land and water | (e) Helps protect people during cyclones |
Answer:
| Column A | Column B |
| (i) Lightning conductor | (d) Transfers electric charge safely to the ground |
| (ii) Cyclone | (c) Spinning system of clouds, winds, and rain |
| (iii) Atmospheric pressure | (a) Pressure exerted by air on all objects |
| (iv) Cyclone shelter | (e) Helps protect people during cyclones |
| (v) Uneven heating of land and water | (b) Causes land and sea breeze |