Class 8 Practice – Level 3 – Set 2 – Some Natural Phenomena

Total questions: 15

How does the phenomenon of "thunder" relate to "lightning"?

Thunder occurs before lightning.

Lightning is a result of thunder.

Thunder is the sound produced by the rapid expansion of heated air caused by lightning.

Lightning creates vibrations in the air that produce thunder.

None

Which of the following describes an electrostatic force?

It acts at a distance without contact.

It requires physical contact to occur.

It is only present in charged objects.

It is stronger than gravitational force at all distances.

None

What is the purpose of using an electroscope in experiments?

To measure the electric current in a circuit.

To detect the presence of electric charge.

To convert electrical energy into mechanical energy.

To store electric charge for later use.

None

Why should you avoid using electrical appliances during a lightning storm?

Lightning can cause power outages.

Lightning can cause short circuits in appliances.

Lightning can travel through electrical wiring and cause electrical shocks.

All of the above.

None

What does the term "epicenter" refer to in an earthquake?

The point inside the Earth where the earthquake originates.

The location on the Earth's surface directly above the focus of the earthquake.

The area that experiences the most intense shaking.

The place where seismic waves are first detected.

None

Which of the following plate boundaries is most commonly associated with earthquake activity?

Divergent boundaries

Convergent boundaries

Transform boundaries

All types of plate boundaries

None

What is the purpose of a seismometer in earthquake studies?

To generate earthquakes artificially.

To measure the speed of seismic waves.

To record the intensity and duration of seismic waves.

To predict future earthquakes.

None

Which of the following is a recommended action to take during an earthquake while inside a building?

Stand in a doorway.

Stay under a sturdy table or desk.

Move towards the elevators.

Run outside immediately.

None

What is the primary reason why tall structures are more likely to be struck by lightning?

They create more charge than shorter structures.

They are closer to storm clouds.

They provide a path of least resistance for electrical discharge.

They attract lightning due to their materials.

None

10.

Which process involves the removal of electrons from an object?

Charging by induction

Charging by polarization

Charging by friction

Charging by conduction

None

11.

What happens to the leaves of an electroscope when a negatively charged object is brought near?

They collapse together.

They remain unchanged.

They diverge due to repulsion.

They absorb the charge.

None

12.

Which of the following is NOT a safe practice during a thunderstorm?

Staying indoors

Using corded phones

Unplugging electrical appliances

None

13.

What is the main factor that affects the amount of damage caused by an earthquake?

The depth of the earthquake's focus.

The magnitude of the earthquake.

The distance from the epicenter.

The type of soil in the area.

None

14.

How do human activities like fracking contribute to earthquakes?

By causing underground explosions.

By mining minerals.

By injecting fluids into the ground, altering pressure.

By constructing large buildings.

None

15.

What is the primary purpose of an earthquake early warning system?

To measure the magnitude of earthquakes.

To provide real-time seismic wave data to the public.

To detect earthquakes before they occur.

To provide alerts to individuals before shaking starts.

None

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Class 8 Practice – Level 3 – Set 2 – Some Natural Phenomena

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