When you remove a woollen cloth in dark, you can see spark and hear a cracking sound. This is due to
Static electricity
Current electricity
Reflection of light
Refraction of light
The weak zones around the boundaries of plates underneath earth, which are prone to slide and cause earthquake are commonly known as:
fault zone
eruption zone
explosion zone
sliding zone
Which of the following plays an important role in the early-warning systems for cyclones?
helicopters
submarines
satellites
stars
When you touch a charged body, the charge flow through you into the earth. This is called
Induction
Conduction
Capacitance
Earthing
Which of the following event can cause earthquake?
volcanic eruption
meteor hitting earth
underground nuclear explosion
all of the above
Conduction can be used to give
Same charge to a body
Opposite charge to a body
Either same or opposite charge to a body
Any of the above
When an object gets negatively charged by the process of friction, then:
the object loses some electrons
the object loses some protons
the object gains some electrons
the object gains some protons
When two bodies are rubbed against each other-
They acquire equal and similar charges
They acquire equal and opposite charges
They acquire different charges but in different amount depending on their masses
They do not acquire any charge
Which country is most prone to Earthquake?
china
India
Japan
America
Magnitude of Earthquake is measured on
Richter scale
Electroscope
Seismograph
Coulomb
