Q36 (a)
(i)Water(and Mineral Salts)
(ii) Food/glucose/sugar
(b)Y contains more dissolved oxygen than Z. OR Y contains less carbon dioxide than Z.
(c)In W, the movement of substance is one direction while blood flows in a circular direction in animals.
Q37
(a)Temperature of water
(b)Before 35°C, the higher the temperature of water, the more the number of number of bubbles produced per minute. (1m) After 35°C, the higher the temperature of water, the fewer the number of number of bubbles produced per minute.
Q38
(a) Part A. A is NOT in the direction of the river flow.
(b) It has a fibrous husk. Or It can float on water.
Q39
(a) Strength
(b) C. It is able to hold the greatest weight before it broke.
Q40
(a)In Set-up B, there is a gap for air to escape.
(b) Remove the funnel OR make a hole on the side of the bottle.
Q41
(a) To find out how the breadth of the magnets affects the strength of the magnets.
(b) D, B, C, A
(c) The breadth of the magnets does not affect its magnetic strength.
Q42
(a)The higher the temperature of the flame, the fewer the number of paper clips attracted.
(b) Heating causes magnets to lose magnetism.
(c) He can drop the magnet several times. OR he can hit the magnet several times.
Q43
(a)The magnetic materials would be attracted to the magnet in Belt D. (1m) When the magnetic materials move further away from the magnet, they will drop into Bin B. (1m)
(b) Use a stronger magnet. OR Increase the speed of BELT C.
Q44
(a) To find out how the material of the objects affects the amount of water lift in the beaker. OR To find out how the material of the objects affects the amount of water absorbed. OR To find out which material (W, X, Y or Z) is the most absorbent.
(b) Material Z is the most absorbent, followed by Y, W then X. OR Material X is the most waterproof, followed by W, Y then Z.
