What are the interactions of these two types of charges with one another?

2

(a)

If a charged plastic straw is brought near another uncharged plastic straw, what will happen?

2

(a)

Mention the name of the natural phenomena which can be predicted to some extent.

2

(a)

Give the name of the scale that is used to express the power of an earthquake.

2

(a)

If a charged plastic straw is brought near another uncharged plastic straw, then what actually happens?

2

(a)

Which material the core is made up of?

2

(a)

What do you mean by earthing?

2

(a)

How can you save yourself from lightning?

2

(a)

What are seismic or fault zones?

2

(a)

Define lightning conductor.

2

(a)

Paheli: I read somewhere that underground explosions could also cause earthquakes.

2

(a)

What is earthing? What is its importance?

2

(a)

What are the causes of sparking?

2

(a)

What will you do on being struck by lightning?

2

(a)

How does earthing help to protect buildings?

2

(a)