Question 2 :
The point where the waves originate is called the _______ of the earthquake
Question 3 :
In which of the following states of India, earthquake is most likely to occur?
Question 4 :
State whether given statement is True or False.<br/>Charges are incapable of passing from clouds to lightning rod.<br/>
Question 5 :
If we rub our dry forearm with a silk cloth, the hairs on the forearm will stand straight. This is because:
Question 6 :
What happens when a used plastic refill is rubbed with polythene?
Question 7 :
The streaks of bright light seen during lightning is essentially the path followed by:
Question 9 :
State whether given statement is True or False.<br/>Does lightning always strike the tallest object?
Question 10 :
Franklin showed that _______ and the spark from our clothes during winters are the same phenomena. Fill in the blanks.<br/>
Question 11 :
The streaks of bright light seen during lightning is essentially the path followed by:
Question 12 :
What are may happen if a building does not have earthing?
Question 13 :
On $26^{th} January, 2001$, a major earthquake occured in _____ district of Gujarat.
Question 14 :
Fill in the blank:<br/>The uppermost layer of the Earth is called _______.
Question 15 :
What will be the nature of charge on the uncharged aluminium foil strip of electroscope when a negatively charged body is brought in contact with it?
Question 16 :
State whether given statement is True or False.<br/>Lightning rods are placed on houses to reduce risk of lightning damage to low. <br/>
Question 18 :
The natural phenomenon which we are not yet able to predict accurately is:
Question 20 :
State whether the given statement is True or False :Whenever there is a lightning, there is an earthquake. 
Question 21 :
Seismic waves that vibrate perpendicular to the direction of their path.
Question 22 :
The top of the atmosphere is about 400 kV with respect to the surface of the earth, corresponding to an electric field that decreases with altitude. Near the surface of the earth, the field is about $100\, Vm^{-1}$. <br>Still, we do not get an electric shock as we step out of our house into the open house, because (assume the house to be a steel cage so that there is no field inside)
Question 23 :
The Earth's surface, the ionosphere and the atmosphere is known as :<br/>
Question 24 :
Fill in the blank:<br/>A weak earthquake has a magnitude _________ on a Richter scale.
Question 25 :
When a person combs his hair static electricity is sometimes generated by:
Question 26 :
State whether the given statement is True or False :Tremors on the Earth can also be caused by the eruption of a volcano. <br/>
Question 29 :
The explanation for atmospheric electricity mainly lies in the field of
Question 30 :
Fill in the blank:<br/>________ charges collect or accumulates near the lower edges of clouds.
Question 31 :
Fill in the  blank:<br/>In 1752, scientist Benjamin Franklin showed that lightning and spark from our clothes are ______ phenomena.
Question 33 :
State whether the given statement is True or False :To process nitrogen, lightning and other processes help in life existence. 
Question 34 :
Electric spark is the electrical discharge when a ________ electric field creates an ionised channel. Fill in the blank.<br/>
Question 35 :
The weak zones around the boundaries of plates underneath Earth, which are prone to slide and cause earthquake are commonly known as:
Question 36 :
Fill in the blank:<br/>A sudden shaking or trembling of the Earth, caused by a disturbance deep inside the Earth's crust, is known as ________.
Question 37 :
When a foil strips get touched by your hand, it loses charge to the Earth through your body. This process is also referred to as ________.<br/>
Question 39 :
Fill in the blank:<br/>A weak earthquake has a magnitude _________ on a Richter scale.
Question 40 :
The air in the path of lightning goes up to a temperature of about<br>
Question 42 :
Assertion : An earthquake will not cause uniform damage to all building in an affected area, even if they are built with the same strength and materials.<br>Reason : The one with its natural frequency close to the frequency of seismic wave is likely to be damaged less.
Question 43 :
Assertion: When charges are shared between any two bodies no charge is really lost some loss of energy does occurs.
Reason: Some energy disappears in the form of heat, sparking etc.
Question 45 :
State whether the given statement is True or False :Earthquakes occur all the time all over the world. <br/>
Question 46 :
The boundaries of the plates, called weak zones, are also known as:
Question 47 :
The Earth's crust plates moves brushing past each other or collide. It causes:
Question 49 :
When you are in forest during lightning which is safe place?
Question 50 :
The natural phenomenon which we are not yet able to predict accurately is:
