Test Papers

Demonstration Science Paper: Section B

This is a Flying Colours' demonstration paper.

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1.
ID 2382
DifficultyDifficulty

Two similar bottles are fitted with funnels.

(a) Which bottle will water flow in easily?

__________________________________________________________


(b) Give a reason for your answer in (a).

__________________________________________________________

Long Answer

(a) Bottle B


(b) Bottle B allows air to escape from the container through the hollow tube.



2.
ID 2383
DifficultyDifficulty

A glass of water at room temperature was left in a freezer compartment of a refrigerator. The graph below shows the changes in the temperature of the water.

(a) In what state was the water at C?

__________________________________________________________


(b) Name the process that took place from B to C.

__________________________________________________________


(c) How long did the water take to reach 0 ° C  ?

__________________________________________________________

Short Answer

(a) Solid


(b) It is freezing


(c) 60 minutes



3.
ID 2409
DifficultyDifficulty

Look at the diagram below. Fill in the boxes with the names of the two processes that take place in the water cycle.


Short Answer

(a) condensation

(b) evaporation



4.
ID 2410
DifficultyDifficulty

Arrange the statements below to show the correct order of the water cycle. Write the numbers 1, 2, 3, 4 and 5 in the spaces provided. The first one has been done for you.


(a) ___2___ Rain water flows into reservoirs, lakes and seas.

(b) _____ Water vapour condenses to become clouds.

(c) _____ Rain falls onto the earth.

(d)______ Water droplets in the clouds get heavier and heavier.

(e) _____ Water evaporates and water vapour rises high up in the sky.

Short Answer

2

4

1

5

3



5.
ID 2411
DifficultyDifficulty

Two bunches of fresh leaves were weighed on an equal arm balance as shown below. One of the bunch of leaves was then placed in the hot sun for several hours. The leaves were then placed back onto the arm balance again. The drawing below shows what happened.



(a) Which bunch of leaves was placed in the sun?

__________________________________________________________


(b) Explain your answer in (a).

__________________________________________________________

Long Answer

(a) Bunch A.


(b) Bunch A was in the sun far too long. It burnt and it became lighter.



6.
ID 2412
DifficultyDifficulty

(a) What is the process of the clearing forests, by cutting down trees, known as?

__________________________________________________________


(b) How do trees help to prevent soil erosion?

__________________________________________________________

Long Answer

(a) Deforestation.


(b) Their roots hold the soil together.



7.
ID 2413
DifficultyDifficulty

'Water. It's in your hands. use it wisely.' List two ways in which you can help save water at home.


(a) _______________________________________________________


(b) _______________________________________________________

Long Answer

(a) Take a shower than a bath.


(b) Use a pail of water to wash your car.



8.
ID 2414
DifficultyDifficulty

Look at the diagram below carefully. Fill in the boxes with the names of the gases.

Short Answer

(a) oxygen


(b) carbon dioxide



9.
ID 2415
DifficultyDifficulty

Compare the respiratory systems of man and fish.


(a) Name one similarity in the way they breathe.

__________________________________________________________


(b) Name one difference between them.

__________________________________________________________

Long Answer

(a) They breathe in oxygen.


(b) Man breathe through lungs while fish breathe through gills.



10.
ID 2416
DifficultyDifficulty

Shabnam says that having plants in our bedroom at night is not advisable.


(a) Do you think she is right?

___________________________________________________________


(b) Explain your answer in (a)

___________________________________________________________

Long Answer

(a) Yes.


(b) Plants take in oxygen and give out carbon dioxide at night, thus competing with the occupants for oxygen.



11.
ID 2417
DifficultyDifficulty

The diagram below shows the cross-section of a leaf.



(a) What is the function of a stoma?

___________________________________________________________


(b) Which part of the leaf are stomata usually found?

___________________________________________________________


(c) Explain why they are found at the part of the leaves stated in (b).

___________________________________________________________

Long Answer

(a) It takes in carbon dioxide and gives out oxygen.


(b) The underside of the leaf.


(c) They are sheltered from direct sunlight, thus preventing water loss.



12.
ID 2418
DifficultyDifficulty

Two fish were kept in a tank as shown below for 3 days.



(a) Where did the fish get their supply of oxygen from?

___________________________________________________________


(b) There are some feather-like structures found under the gill covers of the fish. What are these structures?

___________________________________________________________


(c) Suggest two ways in which the amount of oxygen in the tank could be increased.

___________________________________________________________

Long Answer

(a) They get it from the dissolved oxygen in the water.


(b) They are the gills.


(c) By putting in water plants. By putting in air pump to pump air into the water.



13.
ID 2419
DifficultyDifficulty

Look at the classification table below.




(a) Which group of animals, A, B, C or D is wrongly grouped?

__________________________________________________________


(b) Give a reason for your answer in (a).

__________________________________________________________

Long Answer

(a) Group D


(b) Toads and crocodiles are animal eaters.



14.
ID 2420
DifficultyDifficulty

Two cups of cocoa are placed on a table. One of the cups contains very hot cocoa and the other contains cold cocoa. Suggest two ways of finding out which cup contains the hot cocoa.


(a) ________________________________________________________


(b) ________________________________________________________

Long Answer

(a) The cold one will have water droplets on the outer surface of the cup.


(b) The hot one will have white clouds.



15.
ID 2421
DifficultyDifficulty

The following dishes were set up to compare the growth of seeds.



(a) In which of the above set-ups (A, B, C or D) will the seeds grow best?

___________________________________________________________


(b) In which set-up(s) will the seeds not grow at all?

___________________________________________________________


(c) Explain your answer in (b).

___________________________________________________________

Short Answer

(a) Set-up A


(b) Set-up C


(c) It has no water.



16.
ID 2422
DifficultyDifficulty

Digestion is a process in which our body breaks down food into simpler substances.


(a) What is the first step in the digestion process?

__________________________________________________________


(b) Why is porridge easier to digest than rice?

__________________________________________________________

Long Answer

(a) The teeth will grind and crush the food into smaller pieces.


(b) Porridge is easier to chew and is softer.


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