SULIT 1

Section B

[20 marks]

Answer all questions.

1 Diagram 1 shows a graph of number of elephant found in a jungle in Malaysia.

DIAGRAM 1

(a) How does the number of elephant change from year 2004 – 2006?[1 mark]

(b) Give one reason for your answer in (a). [1 mark] m

(c) (i) Predict the number of elephant in the year 2007 and redraw the bar graph for the year 2007 in Diagram 1 in your answer booklet. [2 marks] m

(ii) nState one way to preserve the elephants. [1 mark] m

2 Diagram 2 shows are pictures of grass and animals found in a habitat.

Grass Caterpillar Chicken Rabbit Eagle

DIAGRAM 2

(a) Identify an omnivore and a canivore. [1 mark] m

(b) Construct a food web based on the pictures in Diagram 2 in your answer booklet. [2 marks] m

(c) nPredict what will happen to the population of (i) caterpillar if all the chickens are killed. [1 mark]

m (ii) grass if all the rabbits are killed. [1 mark]

m

018 © 2007 Hak cipta Mathematics and Science Tutorial SULIT mSULIT 2

3 n100 ml of cold water is poured into a beaker containing 50 ml hot water which was boiled at 100ºC. The temperature of the water in the beaker is recorded for about 10 minutes as shown in Table 1 below.

Time (minutes) 0 2 4 6 8 10

Temperature (ºC) 95 90 85 80 75 70

TABLE 1

(a) What is the aim of the investigation? [1 mark] m

(b) What is the trend of the change in temperature? [1 mark] m

(c) State the following variable (thing) that is (i) manuplated (changed) [1 mark]

m (ii) responding (measured) [1 mark]

m in this investigation.

(d) Predict the temperature of the water at the 12th minute. [1 mark] m4 A student tested four different substances using litmus paper. Table 2 shows the results recorded

by the student.

SubstanceOrange juice

Soap Vinegar

Colour change ofThe litmus paper

Blue → Red Red → Blue Blue → Red

TABLE 2

(a) Is soap an acidic or alkaline substance? [1 mark] m

(b) What is the property of substances that changes the colour of the litmus paper from blue to red? [1 mark] m

(c) During the investigation, what did the student

(i) manuplated (changed)? [1 mark] m

(ii) fixed (kept the same)? [1 mark] m

(iii) responded (measured)? [1 mark] m

END OF SECTION B

018 © 2007 Hak cipta Mathematics and Science Tutorial SULIT m

Questions prepared byNoel Roy [NovinVinno]

Version ‘07