Q4. Short Answer:-
1. What is menstruation? Explain.
2. Name the force acting on a plastic bucket containing water held above ground level in
your hand. Discuss why the force acting on the bucket do not bring a change in its state
of motion.
3. You spill a bucket of soapy water on a floor accidently. Would it make it easier or more
difficult for you to walk on the floor? Why?
4. Does pure water conduct electricity? If not, what can we do to make it conducting?
5. List three states in India where earthquakes are more likely to strike.
6. Suppose you are in dark room. Can you see objects in the room? Can you see object outside
room? Give reason.
7. In which part of the sky can you find Venus if it is visible as an evening star?
Q5. Explain it-
1. Give example to show that friction is both a friend and a foe.
2. List sources of noise pollution in your surrounding .
3. Explain why a charged body loses its charge if we touch it with our hand.
4. Explain how you can locate the Pole Star with the help of Ursa Major.
Q6. Identify the part which vibrates to produce sound in the following instruments.
a) Dholak b) Sitar c) Flute
Q7. Write short notes on:-
1. Adam’s apple 2. Secondary sexual character
Q8. Draw a labelled sketch of human eye.
Answers
Explanation:
Q4. Short Answer:-
1. What is menstruation? Explain.
2. Name the force acting on a plastic bucket containing water held above ground level in
your hand. Discuss why the force acting on the bucket do not bring a change in its state
of motion.
3. You spill a bucket of soapy water on a floor accidently. Would it make it easier or more
difficult for you to walk on the floor? Why?
4. Does pure water conduct electricity? If not, what can we do to make it conducting?
5. List three states in India where earthquakes are more likely to strike.
6. Suppose you are in dark room. Can you see objects in the room? Can you see object outside
room? Give reason.
7. In which part of the sky can you find Venus if it is visible as an evening star?
Q5. Explain it-
1. Give example to show that friction is both a friend and a foe.
2. List sources of noise pollution in your surrounding .
3. Explain why a charged body loses its charge if we touch it with our hand.
4. Explain how you can locate the Pole Star with the help of Ursa Major.
Q6. Identify the part which vibrates to produce sound in the following instruments.
a) Dholak b) Sitar c) Flute
Q7. Write short notes on:-
1. Adam’s apple 2. Secondary sexual character
Q8. Draw a labelled sketch of human eye.
Explanation:
Q4. Short Answer:-
1. What is menstruation? Explain.
2. Name the force acting on a plastic bucket containing water held above ground level in
your hand. Discuss why the force acting on the bucket do not bring a change in its state
of motion.
3. You spill a bucket of soapy water on a floor accidently. Would it make it easier or more
difficult for you to walk on the floor? Why?
4. Does pure water conduct electricity? If not, what can we do to make it conducting?
5. List three states in India where earthquakes are more likely to strike.
6. Suppose you are in dark room. Can you see objects in the room? Can you see object outside
room? Give reason.
7. In which part of the sky can you find Venus if it is visible as an evening star?
Q5. Explain it-
1. Give example to show that friction is both a friend and a foe.
2. List sources of noise pollution in your surrounding .
3. Explain why a charged body loses its charge if we touch it with our hand.
4. Explain how you can locate the Pole Star with the help of Ursa Major.
Q6. Identify the part which vibrates to produce sound in the following instruments.
a) Dholak b) Sitar c) Flute
Q7. Write short notes on:-
1. Adam’s apple 2. Secondary sexual character
Q8. Draw a labelled sketch of human eye.