Answer
1
(i) Temperature of metal ball increased.
1
(ii) Metal ball expanded.
2.
(4)
3a.
SQPR
3b.
S. As it is the worst conductor of heat, it does not allow heat to flow through
easily. Thus, the heat could stay in the pot and keep the food warm for the
longest time.
4a.
No.
4b.
Light travels in straight lines (1 mark). However, the holes in the
cardboards are not in straight line for light to pass through (½ mark).
Light from torch did not reach the object to form any shadow (½ mark).
5. False,
True, True, Not possible
6a.
A
6b.
Air can enter the bottle and push the soya sauce out.
No comments:
Post a Comment