CHAPTER – Some Natural Phenomenon
WORKSHEET NO: 3
NAME: ____________________________
SUBJECT:Science
GRADE & SECTION: 8________
DATE: _____________
TEACHER ASSESSMENT
PARAMETERS
EXCELLENT
VERY GOOD
GOOD
SATISFACTORY
TOPIC NAME
SELF-ASSESSMENT RUBRIC
UNABLE TO UNDERSTAND
UNDERSTANDS THE CONCEPT BUT NOT ABLE TO APPLY
ABLE TO UNDERSTAND THE CONCEPT AND CAN APPLY BUT COMMITS ERRORS
UNDERSTANDS THE CONCEPT WELL AND CAN APPLY ACCURATELY
SUCCESS CRITERIA
1
2
3.
4.
5.
Fill in the blanks:
1. Like charges ……………….. and unlike charges ………………. .
2. The explosive sound heard during lightning is called ……………. .
3. A negatively-charged object will ……………….. a positively charged object.
4. Charging a body by touching it with a charged body is called charging by ……………….. .
. Match the following:
‘A’
‘B’
1. A device which is used to test whether an
object is carrying charge or not is known as
a. Earthing
2. The process of transferring of charge from
a charged object to the earth is called
b. Electroscope
3. A device used to protect buildings from the
effect of lightning is called
c. Earthquake
4. A sudden shaking or trembling of the earth
which lasts for a very short time is called
d. Lightning conductors
Answer the following questions in short:
1. Sometimes, a crackling sound is heard while taking off a sweater during winters. Explain.
2. Explain why a charged body loses its charge if we touch it with our hand.
3. Name the scale on which the destructive energy of an earthquake is measured. An earthquake
measures 3 on this scale. Would it be recorded by a seismograph? Is it likely to cause much
damage?
4. Suggest three measures to protect ourselves from lightning.