Available Answers

1. 1.

   Look at the pictures below. Mention the phenomena being shown in these.

   

2. 2.

   Fill in the blanks.

   1. Like charges _______________ and unlike charges _______________.
   2. The branch of science related to the study of earthquakes or similar phenomenon is called _______________.
   3. The instrument used to measure seismic waves is called _______________.
   4. Lightning is a kind of electric _______________.
3. 3.

   Tick (√) the correct option.

   1. Earths lithosphere is broken into many fragments called
      1. seismic plates
      2. seisomic plates
      3. tectonic plates
      4. earth crust plates
   2. The weak zones where the earthquake is more likely to occur is the
      1. mantle zone
      2. seismic zone
      3. richter zone
      4. seismo zone
   3. Which of these is used to save buildings from lightning?
      1. Lightning conductors
      2. Wires
      3. Seismograph
      4. Richter conductor
   4. Unlike charges
      1. attract each other
      2. repel each other
      3. attract and then repel
      4. always repel
4. 4.

   Give one word for the following.

   1. The positively charged particles
   2. The negatively charged particles
   3. The branch of science concerned with earthquakes
   4. An instrument used to measure seismic waves
   5. An instrument used to detect and measure electric charge
5. 5.

   Match the columns.

   COLUMN A	COLUMN B
   1. Materials	a. Destruction
   2. Charges by friction	b. Discharge to the earth
   3. Epicentre	c. Test for the charge
   4. Earthquake	d. Atoms
   5. Earthing	e. Rubbing
   6. Electroscope	f. Maximum intensity

    

6. 6.

   What is an earthquake?