Question

10.
When a pencil cell is released from a certain point of an inclined
wooden board it travels a distance of 35 cm on floor A before it
comes to rest. When the same pencil cell is released from the
same point on the same inclined board, it travels a distance of 20
cm on floor B before coming to rest. Which foor, A or B, offers
greater friction? Give reason for your answer
Compare the properties of metals and non-metals with respect
3
to: (i) malleability, (ii) ductility and (iii) conduction of heat and
electricity.
Describe how coal was formed? What is this process called?
3
a highly poisonous animal X which inhabits crop fields is
commonly known as friend of the farmer. It eats up pests like Y
and saves crops from damage. The animal X is killed in large
numbers to obtain its 2 which sells in the market at a high price.
What are X, Y, and Z? What step would you like to take to
conserve the animal X and why?
3
What is migration of birds? Why do birds migrate? Name one
migratory bird which comes to warmer regions of India every
year.
11.
12.
SECTION -C
13. i) Draw a diagram to show the reflection of light from a plane
mirror. Label the following on the diagram: a) Plane mirror, b)
Incident ray, c) Reflected ray, d) Point of incidence, e) Normal,
f) Angle of incidence, g) Angle of reflection.
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Answer 1

Answer:

very easy try some hard question

Answer 2

Answer:

then why didnt you answer kiran...