Self Studies
Self Studies
Self Studies
Self Studies

Some Natural Phenomenon Test - 3

Result Self Studies

Some Natural Phenomenon Test - 3
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

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.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0
    When an uncharged body B is brought in contact with a positively charged body A, then

    Statement A: positive charge will flow from A to B
    Statement B: electrons will flow from B to A
    Solution
    When an uncharged body B is brought in contact with a positively charged body A, body B will become positively charged and the electrons will flow from B to A till an equilibrium is achieved.
  • Question 2
    1 / -0
    The electric charge acquired by a glass rod when rubbed with a silk cloth is
    Solution
    When we rub a glass rod with a silk cloth, electrons are transferred from the glass to the silk cloth. So, the glass rod will become positively charged and the silk cloth will become negatively charged.
  • Question 3
    1 / -0
    Directions: Read the given passage and answer the question.

    Rahul first rubbed a glass rod with silk, then touched the rod with an electroscope. Then he rubbed an ebonite rod with fur and brought it near the charged electroscope.

    Statement A    : The leaves of the electroscope will move further apart.
    Statement B: The glass rod will become positively charged and the ebonite rod will become negatively charged.
    Solution
    When a glass rod is rubbed with silk, the glass rod will become positively charged and silk will become negatively charged; and when an ebonite rod is rubbed with fur, the ebonite rod will become negatively charged and fur will become positively charged.
    When a positively charged glass rod is touched with an electroscope, the electroscope leaves will also become positively charged and they will move apart; and when a negatively charged ebonite rod is brought near the cap of the electroscope, it will induce a positive charge on the cap and free electrons will move towards the leaves. Hence, the leaves will become less positively charged and they will come closer to each other.
  • Question 4
    1 / -0
    Lightning and electric shock are examples of
    Solution
    Lightning and electric shock are examples of static electricity. The clouds become charged because of the collisions of raindrops, snow crystals and hail stones. Static charge is developed. The upper part of the cloud becomes positively charged and the lower part becomes negatively charged.
  • Question 5
    1 / -0
    Match Column-I with Column-II and select the correct answer:

    Column-I Column-II
    A. Lightning P. Collection of tiny water droplets
    B. Thunder Q. Falling of water from the sky
    C. Clouds R. Loud sound with lighting
    D. Rain S. Flash of light
    Solution
    Lightning is a flash of light.
    Thunder is a loud sound with lightning.
    Clouds are collection of tiny water droplets.
    Rain is falling of water from the sky.
  • Question 6
    1 / -0
    Choose the correct statements from the following:

    (A) A gold leaf electroscope is used to detect charges.
    (B) The air in the path of the lightning becomes very cold.
    (C) Like charges attract each other.
    (D) Lightning conductors are used to protect a building from lightning.
    Solution
    A gold leaf electroscope is used to detect charges.
    The air around a lightning bolt is super heated to five times hotter than the sun.
    Like charges repel each other.
    Lightning conductors are used to protect a building from lightning.
  • Question 7
    1 / -0
    Read the following statements and choose the correct option:

    Statement A:     To protect a building from lightning, a thick lightning rod, forked at top, is installed on the roof of the building down to earth.
    Statement B: Sharp edges can hold a large amount of charge.
    Solution
    Statement A is correct, statement B is also correct and B is the correct explanation of A.
    The sharp edges can hold a large amount of charge and lightning rod provides the safe passage to static charge to move down to earth.
  • Question 8
    1 / -0
    A and B are playing in a park with many tall trees. Suddenly lightning strikes in the sky. What would be the best possible precaution preferred by them at that time?
    Solution
    They should squat on knees and place head between the hands. This position will make them the shortest object which is unlikely to be hit by the lightning.
  • Question 9
    1 / -0
    The rarest type of lightning is:
    Solution
    An earth-to-cloud lightning flash begins from a tall ground-based object and moves upward. This type of lightning is common with strikes to towers and skyscrapers which are at the same potential as the earth.
  • Question 10
    1 / -0
    Where do positive charges accumulate on a cloud?
    Solution
    When water from the ground evaporates, it rises up towards the clouds and forms clusters of droplets. This rising moisture collides with water droplets within the clouds and, as a result the droplets have some of their electrons ripped off, causing separation between the now positively charged rising moisture and the negatively charged electrons they have left behind.
  • Question 11
    1 / -0
    Raju rubbed a pen refill 'A' with polythene and placed it in a glass tumbler. He rubbed another pen refill 'B' with polythene and brought it close to that charged refill in the tumbler. What effect will be observed?
    Solution
    Refills A and B will repel each other. This is because both refills acquire similar charge when rubbed with polythene, and like charges repel each other.
  • Question 12
    1 / -0
    Directions: Read the following passage and fill in the blanks.

    Earthquakes are caused because of the motion of the ___i___ plates in the outer crust of the Earth. The intensity of tremors is highest near the ___ii____. The place below the Earth's surface from where the earthquake originates is called ____iii____. It is often several kilometres below the Earth's surface.
    Solution
    Tectonic plate (also called lithospheric plate) is a massive, irregularly-shaped slab of solid rock, generally composed of both continental and oceanic lithosphere. Plate size can vary greatly, from a few hundred to thousands of kilometres across; the Pacific and Antarctic Plates are among the largest.
    Epicentre - The point on the Earth's surface directly above the focus of an earthquake
    Hypocentre - The point within the Earth where an earthquake rupture starts
  • Question 13
    1 / -0
    Earthquake intensity is measured with the help of a
    Solution
    Modified Mercalli (MM) Intensity Scale was developed in 1931 by the American seismologists Harry Wood and Frank Neumann.
    This scale, composed of increasing levels of intensity that range from imperceptible shaking to catastrophic destruction, is designated by Roman numerals. It does not have a mathematical basis; instead it is an arbitrary ranking based on observed effects.
  • Question 14
    1 / -0
    Directions: Read the following statements (A and B) and select the correct option.

    Statement A:     P waves are compressional waves which move the material in the same direction as wave movement.
    Statement B: S waves are shear waves and move the material perpendicular to wave movement.
    Solution
    Both statements A and B are correct.
    P waves are also known as compressional waves, because of the pushing and pulling they do. In a P wave, particles move in the same direction that the wave is moving in, which is the direction that the energy is traveling in, and is sometimes called the 'direction of wave propagation.
    S waves move rock particles up and down, or side-to-side--perpendicular to the direction that the wave is traveling in (the direction of wave propagation).
    An S wave is slower than a P wave and can only move through solid rock, not through any liquid medium.
  • Question 15
    1 / -0
    Refer to the figure below and match columns I and II.



    Column I Column II
    A. Point A P. Focus
    B. Point B Q. Fault
    C. Point C R. Epicentre
    D. Point D S. Wavefront
    Solution
    Correct Answer: A - Q, B - S, C - P, D - R
    A represents a fault.
    B represents wavefronts.
    C represents focus, and D represents epicentre.




  • Question 16
    1 / -0
    Directions: Read the following statements (A and B) and select the correct option.

    Statement A: Earthquake prone areas are the ones which are near the equator.
    Statement B: Earthquakes occur when the temperature becomes very high.
    Solution
    Earthquakes happen due to movements in the Earth's crust. The movements release enormous energy which spreads outwards.
    Earthquakes occur when the two seismic plates overlap. The areas near equator are not necessarily more prone to earthquakes. Also, the movement of these plates is not dependent upon the atmospheric temperature.
  • Question 17
    1 / -0
    Directions: Read the following statements (A and B) and select the correct option.

    Statement A: Roof of the buildings in seismic zones should be light.
    Statement B: During the earthquake, if the structure falls, the damage will not be heavy.
    Solution
    Both statements A and B are true, and statement B is the correct explanation for statement A. Heavy building materials can cause massive damage.
  • Question 18
    1 / -0
    Choose the correct statement(s):

    During an earthquake, if you are outdoors, then

    A. find a clear spot, away from buildings, trees and overhead power lines; and drop to the ground
    B. take shelter under a nearby tree
    C. get into the car and drive away fast
    Solution
    During an earthquake, if you are outdoors, then find a clear spot, away from buildings, trees and overhead power lines; and drop to the ground.
  • Question 19
    1 / -0
    How do rock particles move during the passage of a P wave through the rock?
    Solution
    A P wave, or compressional wave, is a seismic body wave that shakes the ground back and forth in the same direction and the opposite direction as the direction the wave is moving.
  • Question 20
    1 / -0
    Solid plates make up the layer P of the earth which are floating on partially molten rocks of layer Q. Q has R currents which are responsible for movement. Identify P, Q, and R respectively.
    Solution
    Solid plates make Crust (P), Molten rocks make Mantle(Q) and Mantle has (R) Convection Currents which move the plates of the earth crust.

Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now