Answer:
(a)
The translucent plastic sheet could not trap enough heat in the box of the
solar cooker. (1)
(b) The teacher asked Shalini to use a glass lid because glass traps heat
due to greenhouse effect. (1)
(c) Shalini is experimental, practical, inquisitive and obedient.
Her teacher is dedicated, having patience and helpful. (1)
You need to login to perform this action.
You will be redirected in
3 sec