Some Natural Phenomena Test

Result

Some Natural Phenomena Test - 29

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Suppose you are in a car and it is raining heavily with thunderstorms. Then what is the best way to protect yourself from a possible lightning strike?

A
Remain in the car

B
Get out of the car and take cover under the car

C
Run to a nearby tree

D
Get out and stand under an electric pole

Solution

During a thunderstorm you are safe inside a car or bus with windows and doors of the vehicle shut. You're safe in a car because the lightning will travel around the surface of the vehicle and then go to ground. The metallic frame of the vehicle, being a good conductor, would direct the current around the objects and discharge it safely to the ground while shielding the objects inside the vehicle.
Question 2
1 / -0

Which of the following Earth's plates is responsible for causing an earthquake?

A
The crust of the earth

B
The mantle of the earth

C
The inner core of the earth

D
The outer core of the earth

Solution

Most earthquakes are tectonic earthquakes, which happen when the large, thin plates of the Earth's crust called tectonic plates become stuck as they move past one another. They lock together, and pressure builds up. When they finally release, earthquakes occur.
Question 3
1 / -0

is engineered to protect an elevated structure in the event of lightning strike.

A
A lightning conductor

B
Copper wire

C
A lightening shield

D
All of the above

Solution

A lightening conductor is a metal rod mounted on a structure and designed to protect the structure from lightning strike.
Question 4
1 / -0

Explore and answer :
Some children are playing in the playground. Suddenly clouds gather in the sky and there is thunder and lightning. What should they do now?
The children should_______.
Choose the correct answer.

A
Run to their houses

B
Stand under a tree

C
Just stand at their places

D
Squat down

Solution

The safest place to be in, while thunderstorms, is indoors, inside a house with doors and windows closed. While outside, it is better to stay away from tall structures like trees that can attract lightning and stay inside cars or buses.
Option A will be the best choice.
Question 5
1 / -0

The lower portion of a charged cloud generally carries .............. .

A
A positive charge

B
A negative charge

C
Air

D
No charge

Solution

During the development of a thunderstorm, the air currents move upward while the water droplets move downward. These vigorous movements cause separation of charges. Positive charges collect near the upper edges of the clouds and the negative charges accumulate near the lower edges.
Question 6
1 / -0

The earth shakes when _________ occurs.

A
Tsunami

B
Flood

C
Earthquake

D
Drought

Solution

Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes seismic waves that make the ground shake.
Question 7
1 / -0

Which of the following one must do when caught in a Thunderstorm?

A
Take shelter inside an isolated tree

B
Take shelter in a safe place like car or bus

C
Sit near a window

D
Take shelter under an umbrella with a metallic end

Solution

The tree is very likely the only one nearby and lightning has a good chance of striking it.
Storm lightning is so fast that even if it were to hit a window, the window would shatter from the heat and speed. Also, glass is not a conductor so being struck by lightning through the window would take the glass being shattered first and then you could be struck by lightning.
The lightning travels through any metallic thing.
So the best option is to take shelter in a safe place like car or bus, without touching the metallic part of it.
Question 8
1 / -0

A cup contains $$250g$$ of water. Find the total positive charge present in the cup of water.

A
$$1.34\times { 10 }^{ 19 }C$$

B
$$1.34\times { 10 }^{ 7 }C$$

C
$$2.43\times { 10 }^{ 19 }C$$

D
$$2.43\times { 10 }^{ 7 }C$$

Solution

Mass of water $$=250g$$
Molecular mass of water $$=18g$$
Number of molecules in $$18g$$ of water $$==6.02\times { 10 }^{ 23 }$$
Number of moleucles in one cup of water $$=\cfrac { 250 }{ 18 } \times 6.02\times { 10 }^{ 23 }$$
Each molecule fo water contains two hydrogen atoms and one oxygen atom, i.e., 10 electrons and 10 protons.
$$\therefore$$ Total positive charge present in one cup of water
$$=\cfrac { 250 }{ 18 } \times 6.02\times { 10 }^{ 23 }\times 10\times 1.6\times { 10 }^{ -19 }C=1.34\times { 10 }^{ 7 }C$$
Question 9
1 / -0

For recording earthquake at a place, tell which instrument is used:

A
Seismograph

B
Micrometer

C
Telegraph

D
Spectrograph

Solution
Question 10
1 / -0

What kind of material should be used in an earthquake prone area?

A
heavy weight

B
conducting material

C
light weight

D
any of the above

Solution

Brick and concrete buildings have low ductility and therefore absorb very little energy.
This makes them especially vulnerable in even minor earthquakes.
Buildings constructed of steel-reinforced concrete, on the other hand, perform much better because the embedded steel increases the ductility of the material.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Some Natural Phenomena Test - 29

Result

Some Natural Phenomena Test - 29

Score

-

Rank

-

SHARING IS CARING

Question 1

Remain in the car

Get out of the car and take cover under the car

Run to a nearby tree

Get out and stand under an electric pole

Solution

Question 2

The crust of the earth

The mantle of the earth

The inner core of the earth

The outer core of the earth

Solution

Question 3

A lightning conductor

Copper wire

A lightening shield

All of the above

Solution

Question 4

Run to their houses

Stand under a tree

Just stand at their places

Squat down

Solution

Question 5

A positive charge

A negative charge

Air

No charge

Solution

Question 6

Tsunami

Flood

Earthquake

Drought

Solution

Question 7

Take shelter inside an isolated tree

Take shelter in a safe place like car or bus

Sit near a window

Take shelter under an umbrella with a metallic end

Solution

Question 8

$$1.34\times { 10 }^{ 19 }C$$

$$1.34\times { 10 }^{ 7 }C$$

$$2.43\times { 10 }^{ 19 }C$$

$$2.43\times { 10 }^{ 7 }C$$

Solution

Question 9

Seismograph

Micrometer

Telegraph

Spectrograph

Solution

Question 10

heavy weight

conducting material

light weight

any of the above

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.