Types of charges and their interaction
Protection against Earthquakes
A Transfer of Charge and Earthing
A Protection against Earthquakes
A IMPORTANT POINTS TO BE REMEMBER
Q. Two. Sometime, a crackling sound is heard while taking off sweater during winters. Explain.
Q. Five. Suggest three measures to protect ourselves from lightning.
Q. Seven. Describe with the help of a diagram an instrument which can be used to detect a charged body.
Q. Nine. Suppose you are outside your home and an earthquake strikes. What precaution would you take to protect yourself?
Q. Eleven. What is the use of step leader?
Q. Thirteen. Why do we hear a thunder after lightning? Explain.
Q. Fifteen. Explain the working of seismograph with the help of a diagram.
Q. Seventeen. Write the process of occurring of earthquake.
Single Correct Answer type Questions
Q. Three. Generally lower part of clouds has
Q. Four. Electric charges are
Q. Five. In a neutral object, there are
Q. Six. In the air the path of lightning goes up to a temperature of about: (A) three hundred degrees Celsius (B) three thousand degrees Celsius.
Question seven. A lightning conductor. (A) conducts light
Question eight. If you are caught in a thunderstorm you should
Question nine. Charged objects exert a ...... on each other. (A) cloud. (B) lightning
Question ten. We hear a thunder because
Question twelve. Lighting occurs because of. (A) rain. (B) electric discharge