NATURAL PHENOMENON

An electroscope is a device which is used to find if an object is

• charged

• magnetised

• hot

• free of cracks

The outermost layer of earth is called

• mantle

• outer core

• inner core

• crust

Which of the following cannot be charged easily by friction?

• A plastic scale

• A copper rod

• An inflated balloon

• A woolen cloth

When two bodies are rubbed against each other, they acquire

• Equal and similar charges

• Equal and opposite charges

• Unequal and similar charges

• Unequal and opposite charges

Which of the following is negatively charged particle?

• proton

• electron

• neutron

• all of these

An earthquake of magnitude 8-9 is

• not felt

• mild

• strong

• very strong

Name the scientist who showed that lightening and spark from our clothes are essentially the same phenomenon ?

• Thomas Alva Edison

• Franklin D. Roosevelt

• Issac Newton

• Benjamin Franklin

During the development of thunderstorm, the charges accumulate near the upper edges of the cloud is –

• positive

• negative

• neutral

• none of these

Interaction of charges is called _______.

• lightning

• electrical discharge

• earthing

• electricity

The movement of the earth’s plates causes

• cyclones

• lightning

• earthquakes

• thunderstorms