Some Natural Phenomena Test

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Some Natural Phenomena Test - 24

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Weekly Quiz Competition

Question 1
1 / -0

If an ebonite rod rubbed with fur and a glass rod rubbed with silk cloth are brought nearer to each other, then what happens?

A
They will attract each other.

B
They will repel each other.

C
Nothing will happen to them.

D
They will get heated up.

Solution

On rubbing the ebonite rod with fur, electrons move from fur to the ebonite rod. Hence, the ebonite rod becomes negatively charged.

When the glass rod is rubbed with silk cloth, glass quickly loses electrons and silk takes electrons. Hence, the glass rod becomes positively charged.

Since, unlike charges attract each other. Hence, if an ebonite rod rubbed with fur and a glass rod rubbed with silk cloth are brought closer to each other, they will attract each other.
Question 2
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The weak zone around the boundaries of plates underneath the Earth, which is prone to slide and cause an earthquake is commonly known as :

A
Fault zone

B
Eruption zone

C
Explosive zone

D
Sliding zone

Solution

The weak zone around the boundaries of plates underneath the earth, which is prone to slide and cause an earthquake is known as Seismic or Fault Zones.
The correct option is A.
Question 3
1 / -0

Which of the following is the best thing to do during heavy lightning ?

A
Lying on the ground in an open place

B
Going into the nearest water body

C
Staying indoors away from metallic doors or windows

D
Standing under a tall tree

Solution

A house or a building is a safe place to stay protected from lightning strikes. However, lightning can strike telephone cords, electrical wires, and metal pipes. Therefore, during a thunderstorm, we should avoid any contact with metal bodies.
Question 4
1 / -0

Magnitude of earthquake is measured by :

A
Electroscope

B
Richter scale

C
Seismograph

D
Screw Guage

Solution

A seismograph is an instrument used to detect and record earthquakes, whereas - a Richter scale is a quantitative measure of the power or magnitude of an earthquake. It is also known as the Richter Magnitude Scale.

So the correct option is B.
Question 5
1 / -0

Earthquakes at two places $$A$$ and $$B$$ were measured by a seismograph which recorded the magnitude as $$2$$ and $$4$$. The magnitude of tremors and their destructive energy at $$A$$ and $$B$$ can be compared as:

A
Tremors at $$B$$ are two times that at place $$A$$

B
Tremors at $$B$$ are four times that at place $$A$$

C
Tremors at $$B$$ are $$100$$ times that at place $$A$$

D
Tremors at $$B$$ are $$1000$$ times that at place $$A$$

Solution

Richter scale is not linear. An earthquake of magnitude $$4$$ is not twice destructive as an earthquake of magnitude $$2$$. An increase of $$2$$ in magnitude means $$1000$$ times more destructive energy. Therefore, Tremors at $$B$$ are $$1000$$ more destructive energy than that at place $$A$$.
Question 6
1 / -0

Which of the following country in the world is most prone to earthquake?

A
India

B
America

C
China

D
Japan

Solution

Since, Japan is located in an area where several tectonic plates meet. Hence, it is most prone earthquake.
Question 7
1 / -0

Which of the following event can cause earthquake?

A
Volcanic eruption

B
Meteor hitting earth

C
Underground nuclear explosion

D
All of the above

Solution

An earthquake is a sudden shaking or trembling of the earth which lasts for a very short time. Most earthquakes are caused by the movement of earth’s plates. Tremors on the earth can also be caused when a volcano erupts, or a meteor hits the earth, or an underground nuclear explosion occurs.
Question 8
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A .......... protects a building from lightning.

A
Seismograph

B
Electroscope

C
Lightning conductor

D
None of these
Question 9
1 / -0

An ebonite rod is rubbed with fur. Which of the following statements are true?

A
Electrons move from fur to the ebonite rod.

B
Electrons move from ebonite rod to the fur.

C
There will be no transfer of electrons

D
After rubbing both will have the same type of charge

Solution

Ebonite rod gains electrons from the fur when it is rubbed with fur. Thus ebonite has more negative charges as compared to positive charges in the nucleus. Thus, on the whole, the ebonite rod gets negatively charged.
Question 10
1 / -0

The streaks of bright light seen during lightning is essentially the path followed by:

A
UV rays from Sun

B
cosmic rays

C
accumulated electric charges

D
none of the above

Solution

The electric charges accumulated on the surfaces of clouds follow the path of the streaks of bright light during lightning.

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Re-Attempt Weekly Quiz Competition

Some Natural Phenomena Test - 24

Result

Some Natural Phenomena Test - 24

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SHARING IS CARING

Question 1

They will attract each other.

They will repel each other.

Nothing will happen to them.

They will get heated up.

Solution

Question 2

Fault zone

Eruption zone

Explosive zone

Sliding zone

Solution

Question 3

Lying on the ground in an open place

Going into the nearest water body

Staying indoors away from metallic doors or windows

Standing under a tall tree

Solution

Question 4

Electroscope

Richter scale

Seismograph

Screw Guage

Solution

Question 5

Tremors at $$B$$ are two times that at place $$A$$

Tremors at $$B$$ are four times that at place $$A$$

Tremors at $$B$$ are $$100$$ times that at place $$A$$

Tremors at $$B$$ are $$1000$$ times that at place $$A$$

Solution

Question 6

India

America

China

Japan

Solution

Question 7

Volcanic eruption

Meteor hitting earth

Underground nuclear explosion

All of the above

Solution

Question 8

Seismograph

Electroscope

Lightning conductor

None of these

Question 9

Electrons move from fur to the ebonite rod.

Electrons move from ebonite rod to the fur.

There will be no transfer of electrons

After rubbing both will have the same type of charge

Solution

Question 10

UV rays from Sun

cosmic rays

accumulated electric charges

none of the above

Solution

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