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What is CLOUD BURST & why does it occurs ?????
How does an earthquake occur in nature? list some destructive and some constructive consequences of the earthquake.
explain the working and construction of electroscope
How does a charged body convert into discharged body?
Draw a labeled diagram of a gold leaf electroscope. describe how will you use it to detect a charge, measure a charge,and find the nature of charge.
i hope you will answer it fast.....!!1:)))))))))))
what are the causes of earthquake
equal and opposite charges are produced during electrification. True or False
Tell 2 uses of electroscope?
A substance in gaseous form is being cooled to solid state. Its temperature will remain constant when the substance is
(i) in condensing phase
(ii) in freezing phase
(iii) at thermal equilibrium with the environment.
A. (i) only B. (iii) only
C. (i) and (ii) only D. (i), (ii) and (iii)
what are tactonic plates?
List three states in India where earthquakes are more likely to strike
what causes the earthquake?
Sometimes a crackling sound is heard while taking off a sweater during winters. Explain.
why it is not advisable to carry a umbrella during lighting or thundering
what is the difference between pith electroscope and gold leaf electroscope
Why do we say that only repulsion is a sure test of charge ?
how does electrical discharge occur in clouds ????????????????????
why is repulsion considered as the surest test of electrification ?
WHY DID THE SPARKS COME WHEN WE RUB TWO STONES TOGETHER??
Why two bodies rubbed against each other acquire equal and opposite charges?
write about the internal structure of earth......please fast.......dont take so much time......need it within a hour........and explain briefly...PLEASE......
what is the difference between conduction and induction?
which is the heaviest particle of an atom ?
What Is The Difference Between
EMI And EMF
why do we say that richter scale is not a linear scale ??? plzz if u know tell me fast ..!!
The force with which two similar charges repel each other depends on the __________ charge they carry.
When lightning strikes, a ____________ wave get produced in the intervening air.
When we take off woollen or synthetic clothes sometimes we hear a crackling sound.
It might be dangerous to raise an umbrella over our head in a thunder storm.
A car with closed windows is a safe place during lightning.
Give the order of potential difference between the earth and a charged cloud during lighting.
1. Explain the following : (a) Nylon clothing crackles as you undress.
(b) TV screens soon become very dusty.
(c) It might be dangerous to raise an umberella in a storm.
(d) A rubbed balloon will stick to the wall for sometimes.
2. Explain the role of a lightning conductor in protecting a tall building from lightning.
3. Can the electrostatic charges be stored ? If so how ?
4. The top of a lightning conductor is always higher than the top of the building. Give Reason.
WHAT IS LIGHTNING CONDUCTOR? WRITE ITS USES?
Why does positive charge accumulate on the upper clouds and negative charge on the lower ones? How do we knoe about what charge is accumulated where??
What are plate tectonics???
When a positively charged body is brought near an uncharged metal rod, the part of the rod near the charged body acquires a negative charge, and the far side a positive charge. Can you say why this happens? Remember that in a body negative charge are mobile whereas positive charge are fixed.
what is earthing?
why are sparks seen on electric pole if the wire become loose?
why are taller buildings in greater danger of being struck by lightning
what are the effects of earthquake?
why does hair of the hand raise when it is brought near a telivision screen once the tv is switched off ?
what are areas prone to earthquakes both in india and world?
please send answer fast because i have to submit my copy on 20/12/12
Shown below is the figure of an electroscope. It consists of two thin metallic leavesattached face to face to a metal hook.A glass container protects the whole device.Which of the following will make the metallic leaves diverge from its present position?
P. touching the metal hook with a positively charged body
Q. touching the metal hook with a negatively charged body
R. by touching the metal hook with an uncharged body
1.onlyP2.2.onlyQ 3.only P and Q4.only Q
explain the working of a lightning conductor?
why are taller buildings in greater danger of being struck by lightning?
why should we not use the lift during an earthquake?
explain in what way is lightning useful ?
In earthquake prone areas ,houses are usually built with wood .Why?
what is convention ?
If a plastic straw is rubbed with polythene, what charge does the straw acquire?
Q1) state 2 uses of electroscope
Q2) TV screens become dusty very soon.why?
Q3) why is the upper end of the lightning conductor is made into a trishul?
(respected experts pls fast ai have a test on monday)
which of these can be charged by static electricity? how?
Construction engineers and architects need to be familiar with earthquakes. Why?
Explain about electrostatic induction?
please justify the statement "It might be dangerous to raise an umbrella in a storm"
explain how an earthquake occurs
Name two events (other than earthquake) which can cause tremors on earth.
Raju was able to charge a plastic comb by rubbing it in his dry hair, but not a metal comb. Why?
how lightning occurs between two clouds during a storm?
clouds can also charge tall buildings,poles,wires and trees by
(a)friction (b) conduction (c) induction (d) all of these
what is difference between conduction and induction???
is it safe for the electrician to carry out electrical repairs outdoors during heavy downpour???why/why not???
A crackling sound is heard by taking of a sweater during winter.why?
explain the effects of deforestation of forest soil.
why do signs at the petrol stations warn people not to use their cell phones while filling petrol in their cars?
what are the causes of over utilisation of natural resources?
The inside part of a fruit such as an orange conducts electricity. What enables it to conduct electricity? PLEASE ANSWER IT URGENTLY FOR I HAVE A SCIENCE EXAM TOMORROW.
how does lightning take place between the clouds?
conclusion on some natural phenomena
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