Extra 40 multiple-choice questions (MCQs) for the "Some Natural Phenomena" chapter:12 of Class 8 CBSE Science:-
Which of the following is a natural phenomenon?
(a) Burning of paper
(b) Rusting of iron
(c) Lightning
(d) Cooking food
Answer: (c) Lightning
Lightning is caused by:
(a) Friction between clouds and air
(b) Static electric charges
(c) Heat of the sun
(d) Magnetic fields
Answer: (b) Static electric charges
The process of transferring charge between objects is called:
(a) Conduction
(b) Induction
(c) Charging
(d) Electrification
Answer: (d) Electrification
Like charges:
(a) Attract each other
(b) Repel each other
(c) Have no effect on each other
(d) Neutralize each other
Answer: (b) Repel each other
Unlike charges:
(a) Repel each other
(b) Attract each other
(c) Have no effect on each other
(d) Neutralize each other
Answer: (b) Attract each other
The device used to detect whether a body is charged or not is called:
(a) Ammeter
(b) Voltmeter
(c) Electroscope
(d) Thermometer
Answer: (c) Electroscope
Earthquakes are caused by:
(a) Volcanic eruptions
(b) Movement of tectonic plates
(c) Strong winds
(d) Heavy rainfall
Answer: (b) Movement of tectonic plates
The instrument used to measure the magnitude of an earthquake is:
(a) Barometer
(b) Thermometer
(c) Seismograph
(d) Hygrometer
Answer: (c) Seismograph
The scale used to measure the magnitude of an earthquake is:
(a) Celsius scale
(b) Fahrenheit scale
(c) Richter scale
(d) Kelvin scale
Answer: (c) Richter scale
The boundary of the tectonic plates is called:
(a) Focus
(b)
Epicentre
(c) Seismic zone
(d) Fault
Answer: (d) Fault
The point on the Earth's surface directly above the focus of an earthquake is called:
(a) Focus
(b)
Epicentre
(c) Seismic zone
(d) Fault
Answer: (b)
Epicentre
The zone where earthquakes are more likely to occur is called:
(a) Focus
(b)
Epicentre
(c) Seismic zone
(d) Fault
Answer: (c) Seismic zone
Which of the following can protect us from lightning?
(a) Open field
(b) Under a tree
(c) Inside a car or bus
(d) Near a water body
Answer: (c) Inside a car or bus
What is a lightning conductor?
(a) A device to measure lightning
(b) A metallic rod to protect buildings from lightning
(c) A device to attract lightning
(d) A device to create lightning
Answer: (b) A metallic rod to protect buildings from lightning
Which of the following is a safety measure during an earthquake?
(a) Staying indoors and taking cover under a table
(b) Running outside into an open field
(c) Standing near a tall building
(d) Staying near a window
Answer: (a) Staying indoors and taking cover under a table
What are tremors?
(a) Strong winds
(b) Small earthquakes
(c) Volcanic eruptions
(d) Heavy rainfall
Answer: (b) Small earthquakes
Which gas is present in the atmosphere and helps in lightning formation?
(a) Oxygen
(b) Nitrogen
(c) Carbon dioxide
(d) Water vapor
Answer: (d) Water vapor
The rapid rushing of hot air upwards is called:
(a) Cyclone
(b) Thunderstorm
(c) Lightning
(d) Earthquake
Answer: (b) Thunderstorm
A violent storm with very strong winds is called:
(a) Thunderstorm
(b) Cyclone
(c) Lightning
(d) Earthquake
Answer: (b) Cyclone
The eye of a cyclone is a:
(a) High-pressure area
(b) Low-pressure area
(c) Stormy area
(d) Rainy area
Answer: (b) Low-pressure area
Which zone is most prone to cyclones in India?
(a) Northern plains
(b) Coastal areas
(c) Desert areas
(d) Mountainous regions
Answer: (b) Coastal areas
What is the primary cause of thunderstorms?
(a) High pressure
(b) Low pressure
(c) Rapid upward movement of warm air
(d) Cold winds
Answer: (c) Rapid upward movement of warm air
What is the process of electric discharge between clouds and the earth called?
(a) Electrification
(b) Static electricity
(c) Lightning
(d) Conduction
Answer: (c) Lightning
Which material is used to make a lightning conductor?
(a) Plastic
(b) Rubber
(c) Copper
(d) Wood
Answer: (c) Copper
The study of earthquakes is called:
(a) Geology
(b) Seismology
(c) Meteorology
(d) Astronomy
Answer: (b) Seismology
What is the primary factor that causes cyclones to form over oceans?
(a) High tides
(b) Warm ocean temperatures
(c) Cold ocean temperatures
(d) Strong land breezes
Answer: (b) Warm ocean temperatures
What does the Richter scale measure?
(a) Wind speed
(b) Atmospheric pressure
(c) Earthquake magnitude
(d) Rainfall
Answer: (c) Earthquake magnitude
What is the safest place to be during a thunderstorm?
(a) Under a tree
(b) In a metal shed
(c) Inside a building or car
(d) Near a water body
Answer: (c) Inside a building or car
Which type of charge is accumulated on a glass rod when rubbed with silk?
(a) Negative charge
(b) Positive charge
(c) Neutral charge
(d) No charge
Answer: (b) Positive charge
Which type of charge is accumulated on an ebonite rod when rubbed with fur?
(a) Positive charge
(b) Negative charge
(c) Neutral charge
(d) No charge
Answer: (b) Negative charge
What is the cause of static electricity?
(a) Moving charges
(b) Stationary charges
(c) Magnetic fields
(d) Heat
Answer: (b) Stationary charges
What is the function of a lightning rod?
(a) To attract lightning
(b) To conduct lightning safely to the ground
(c) To measure lightning
(d) To prevent lightning
Answer: (b) To conduct lightning safely to the ground
What is the
centre
of an earthquake called?
(a)
Epicentre
(b) Focus
(c) Seismic zone
(d) Fault line
Answer: (b) Focus
What is the term for the sudden shaking of the Earth's crust?
(a) Cyclone
(b) Thunderstorm
(c) Earthquake
(d) Tornado
Answer: (c) Earthquake
Which of the following is a safety precaution during a cyclone?
(a) Staying near the coast
(b) Ignoring warnings
(c) Moving to a cyclone shelter
(d) Staying in low-lying areas
Answer: (c) Moving to a cyclone shelter
What is the primary source of energy for thunderstorms and cyclones?
(a) Wind energy
(b) Solar energy
(c) Heat energy from the ocean
(d) Geothermal energy
Answer: (c) Heat energy from the ocean
What is the effect of a lightning strike on a tree?
(a) No effect
(b) It can catch fire
(c) It grows taller
(d) It loses leaves
Answer: (b) It can catch fire
What is the term for a large rotating storm with low-pressure
centre
?
(a) Thunderstorm
(b) Cyclone
(c) Earthquake
(d) Tornado
Answer: (b) Cyclone
Which of the following is a natural disaster?
(a) Traffic accident
(b) Fire in a building
(c) Earthquake
(d) Pollution
Answer: (c) Earthquake
What is the term for the boundary between tectonic plates?
(a) Volcano
(b) Fault line
(c) Mountain range
(d) River bed
Answer: (b) Fault line
