2011 ppt p2
TRANSCRIPT
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Section A
[40 marks]
Answerall questions
1. Diagram 1 shows particles in three substances W, X and Y.
W : . X : ... Y : .
Diagram 1
(a) Label W, X and Y in Diagram 1 with the following words:
[3 marks](b) Name one substance that has the same type of particle as in W.
..[1 mark]
(c) Draw lines to match metal with its properties.
[2 marks]
Mixture Compound Element
Metal
Properties
Good conductor of heat
Brittle
Dull surface
Malleable
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2. Diagram 2.1 shows the vertical section of the eye.
Diagram 2.1
(a) Label the parts of the eye U and V with words from the box below in Diagram 2.1
[2 marks](b) State the function of the part label S.
[1 mark]
Diagram 2.2
(c) Diagram 2.2. shows a model representing a type of vision defect.
(i) State the type of vision defect represented.
[1 mark]
(ii) State one reason for the vision defect in (c) (i).
[1 mark]
Pupil Cornea Retina Optical nerve
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(iii) Two types of lenses are shown in Diagram 3.3 below..
X Y
Diagram 2.3
Which type of lens, X or Y, can be used to correct the vision defect in (c)(i)?
.
[1 mark]
3. Diagram 3 shows the different parts of a flower.
Diagram 3
(a) On Diagram3, label the structures X and Y which are:
X the structure that produces the pollen grains
Y the place where fertilisation occurs
[2 marks]
(b) Based on Diagram 3, what do you think is the agent of pollination for the flowershown? Give one reason to support your answer.
Pollinating agent :
Reason : ..
[2 marks]
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(c) State the characteristic you would expect the pollen grains of this flower tohave.
[1 mark]
(d) Give one advantage of cross pollination in agriculture.
[1 mark]
4.
Diagram 4
(a) Diagram 4 shows the growth curves of boys and girls based on bodyweight.
(i) Which curves M or N is the growth curve for boys?
M
N
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..
(ii) State one reason for your answer.
.
.
[2 marks]
(b) Based on Diagram 4, at what age do
(i) both boys and girls grow most rapidly?
...
(ii) boys reach puberty?
.
[2 marks]
(c) What happens to the rate of growth when the boys and girls reach
(i) adulthood?
...
(ii) old age?
..
[2 marks]
5.
Diagram 5.1
Diagram 5.1 shows a part of the female reproductive system and some process thatoccur in the system.
(a) What are the processes P,and R that occur in the female reproductive system?
Process P : ........................................................................................................
Process R : ..
Process Q
Process P
Process R
Uterus
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[2 marks]
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(b) Describe what happens during Process Q.
....
[1 mark]
Diagram 5.2 shows the development of a foetus inside the uterus.
Diagram 5.2
(c) (i) Name structure X and Y.
X : .. Y : ..
[2 marks]
(ii) Describe how structures X and Y work together to support the
development of the foetus...
..
..
..
[2 marks]
(d) What is the function of fluid labelled Z?
...
[1 mark]
Foetus
Fluid Z
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6.
Diagram 6.1
Diagram 6.1 shows a paper cutter.
(a) On diagram 6.1, label the positions of the fulcrum, load and effort.
[2 marks]
(b) (i) Based on diagram 6.1, state the class of lever to which the papercutter belong.
...........................................................................................................
(ii) Give one reason for your answer.
[2 marks]
Diagram 6.2
(c) Based on Diagram 6.2, choose one tool with the same class of lever as the
[1 mark]
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(d) Diagram 6.3 shows a lever that is in equilibrium.
Load Force W25 cm 50 cm
60 NFulcrum
Diagram 6.3
(i) Calculate the force W needed to balance the metre ruler using thefollowing formula:
X = X
[2 marks]
(ii) What must you do to keep the metre rule in balance if the load is shiftedfurther away from the fulcrum?
..
[1 mark]
LoadDistance of loadfrom the fulcrum Force
Distance of forcefrom the fulcrum
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Section B
[20 marks]
Answerall questions
7. Diagram 7.1 shows four situations of heat transfer P, Q, R and S.
P Q
R S
(a) Based on your observations, state one characteristic of each situation ofheat transfer P, Q, R and S.
Heat transfer Characteristic
P
Q
R
S
[4 marks](b) Classify the situations of heat transfer into two groups based on their common
characteristics
P, Q, R, S
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[4 marks]
(c) Diagram 7.2 shows a method of heat transfer used in air ventilation of a building.
Diagram 7.2
Commoncharacteristics
Letters of heattransfer
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Based on Diagram 7.2.
(i) State one inference about the heat transfer.
.............
..
[1mark]
(ii) Predict what will happen to the temperature of the house if the hole for theair is closed.
[1 mark]
8. (a) The diagram 8.1 below shows some wet clothes hung on a line under differentconditions.
Condition A Condition B
Diagram 8.1
(i) Based on your observations in Diagram 8.1, state the difference in thetime taken for the clothes to dry in Condition A and Condition B.
[1 mark]
(ii) What inference can be made based on Condition A and Condition B in thediagram above.
[1mark]
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(iii) State one hypothesis based on your observations in the diagram above
[1 mark]
(b)