Some Natural Phenomena (Set - II)
| Description: Some Natural Phenomenon - II | |
| Number of Questions: 21 | |
| Created by: Neema Pandya | |
| Tags: Some Natural Phenomenon - II Types of Charges and their Interaction Concept of Lightning and Charging Transfer of Charge from One Body to Another Earthquake and its Causes Measuring of Earthquake and Protection Against it Concept of Thunderstorm and Safety While Lightning Addition and Subtraction of Decimal Numbers Decimals in Money, Length and Mass Word Problems Involving Decimals |
A charged glass rod rubbed with silk is brought near a charged plastic straw rubbed with polythene. What will happen?
Which of the following objects cannot be charged by rubbing?
What will happen when dry hair are rubbed with a plastic comb?
When charges move, they constitute a/an ________.
A positively charged object attracts another charged object kept close to it. What is the nature of the charge on the other object?
The electric charge can be transferred from a charged object to another through a/an _______.
There are charged and uncharged objects in a box. Radha wants to collect the charged objects. How can she find out which objects are charged?
What type of material is useful in highly seismic areas for the construction of houses?
Tremors on the earth can be caused by __________. (a) nuclear explosions (b) meteorite hits (c) thunderstorms (d) cyclones
The really destructive earthquakes have magnitudes ________.
What precautions should be taken during an earthquake?
In which layer of the earth do the disturbances happen?
The streaks of bright light and sound in the air are produced during a thunderstorm when _____.
Where do positive charges accumulate on a cloud?
If a storm is accompanied by lightning, which of the following should be avoided?
What is/are the cause(s) of disturbance inside the earth? (a) Collision of plates (b) When plates brush past one another (c) Increase in temperature inside the earth in summers
Which of the following options are the qualities of earthing? (a) It must be able to dissipate currents repeatedly. (b) It must have a low corrosion resistance. (c) It should be an insulator. (d) It should be easy to maintain.
Why is it advised not to touch water pipes in buildings during a thunderstorm? (a) Because heat can be produced in them due to friction with the wind (b) Because current can be passing through them (c) Because the water pipe may burst due to excess of flow of water
Which of the following options can be predicted to some extent before it/they actually happen(s)? (a) Lightning (b) Thunderstorm (c) Earthquake
What is the nature of charge (A) on the metal cap and (B) on the leaves of an uncharged electroscope when a negatively charged body is brought in contact with its metal cap?
Why does a charged body lose its charge if it is touched with hands?