Question 1 :
An electroscope is a device which is used to find if an object is ___________.
Question 2 :
The boundaries of the plates are the weak zones where earthquakes are more likely to occur. The weak zones are also known as
Question 3 :
An earthquake measures 3 on the richer scale. Would it be recorded by a seismograph?
Question 4 :
Two charged objects are brought close to each other. Choose the most appropriate statement from the following options:
Question 6 :
Electrical charge can be transferred from a charged object to another through a
Question 7 :
A charged glass rod attract a charged plastic straw. State TRUE or FALSE.
Question 8 :
In an electroscope if a negatively charged body is brought in contact with the metal clip, the strips of the electroscope diverge. If now another charged object carrying equal amount of positive charge is brought in contact with the clip, what will happen?
Question 10 :
Give the precautions that you will take to protect yourself if earthquake strikes when you are inside the house.
Question 11 :
The process of transferring of charge from a charged object to the earth is called
Question 12 :
It is a convention to call the charge acquired by a glass rod when it is rubbed with silk as positive. The other kind of charge is said to be negative. Is it TRUE OR FALSE?
Question 14 :
What precautions would you take if lightning occurs while you are outside the house?
Question 17 :
When a glass rod is rubbed with a piece of silk cloth the rod ________________.
Question 18 :
The power of an earthquake is expressed in terms of a magnitude on a scale called
Question 19 :
_________ and _________ charges meet, producing streaks of bright light and sound.
Question 20 :
Lightning conductor cannot protect a building from lightning. State TRUE or FALSE.
Question 22 :
Lightning Conductor is a device used to protect buildings from the effect of lightning. Is it TRUE OR FALSE?
Question 23 :
It is observed that when a charged glass rod is brought near a charged plastic straw rubbed with polythene there is __________ between the two.
Question 24 :
The outermost layer of the earth is not in one piece. It is fragmented. Each fragment is called :
Question 25 :
Which states in India where earthquakes are more likely to strike?
Question 28 :
What precautions should be taken if you are Inside the house during a thunderstorm?
Question 30 :
A charged glass rod attract a charged plastic straw. State TRUE or FALSE.
Question 32 :
The seismic waves are recorded by an instrument called the _________
Question 33 :
What precautions should be taken if you are Inside the house during a earthquake?
Question 34 :
The earthquake measuring ______ or more on Richter scale can cause severe damage to life and property.
Question 42 :
An earthquake measures 3 on the richer scale. Would it be recorded by a seismograph?
Question 43 :
What is caused by the accumulation of charges in the clouds?
Question 44 :
If the materials used for constructing a building were good conductors, will the lightning conductor be still required to be installed in the building?
Question 45 :
The power of an earthquake is expressed in terms of a magnitude on a scale called
Question 46 :
The boundaries of the plates are the weak zones where earthquakes are more likely to occur. The weak zones are also known as
Question 47 :
Plastic straws A and B are rubbed with dry cotton cloth. What will happen if they are brought near each other?
Question 50 :
State true or false. The process of electric discharge cannot occur between clouds and the earth.