Kwun Tong Government Secondary School

KWUN TONG GOVERNMENT SECONDARY SCHOOL Half-yearly Examination 2013-2014 Integrated Science Class : S.1 ( ) Max. Mark : 100 Name : ______Date : 17-1-2014 Class No.: ______Time : 8:45 – 9:45am

Answer all of the questions on the answer sheet provided. (A) Multiple Choice (20 marks) 1. Which of the following materials are inventions? (1) Gold (金) (2) Plastic (塑膠) (3) Paper A. (1) and (2) only B. (2) and (3) only C. (1) and (3) only D. (1), (2) and (3)

2. Which label(s) is / are the hazard warning label(s)? (1) Careful (2) Dangerous (3) Harmful A. (1) only B. (2) only C. (3) only D. (1), (2) and (3)

3. If you put 4 marbles of equal volume into a measuring cylinder, the level of water inside is 20 cm3. The volume of water inside the measuring cylinder before adding any marbles is 12 cm3. What is the volume of each marble?

A. 2 cm3 B. 4 cm3 C. 6 cm3 D. 8 cm3

4. Lily is making some cookies. She wants to add 0.85 L of milk to the flour. However, the volume markings of the measuring jug (壺) are in mL. How much milk in mL should she add? A. 8.5 mL B. 85 mL C. 850 mL D. 8500 mL

5. According to the diagrams below, what is the change in weight of the liquid in the evaporating dish?

A. Increased by 50 g B. Decreased by 50 g

C. Increased by 100 g D. Decreased by 100 g

6. Wilson wants to measure 90cm3 of water. Which of the following apparatus should he use? A. A beaker B. A dropper C. A measuring cylinder D. A syringe

7. If we do not use the Bunsen burner, we should A. close the air hole and turn off the gas tap at once. B. close the air hole only. C. change the flame to blue and close the air hole. D. change the flame to yellow and close the air hole.

8. In the past, people thought that the Earth was flat, and it ended at edges. Boats might fall off the edges if they went too far from the coast.

In the 16th century, Magellan (麥哲倫) sailed round the world successfully. This provided evidence that the Earth is round. From this example, we can tell that A. people in the past did not know anything about the Earth. B. scientific discoveries can be harmful. C. science cannot explain everything in nature. D. scientific knowledge is subject to change when there are new discoveries.

9. Mary is going to measure the temperature of melting ice with the set-up below.

thermometer

melting ice

During the experiment, the thermometer breaks accidentally. What should Mary do at once? (1) Report the case to her teacher. (2) Pick up the broken pieces of glass.

(3) Wash the ice cubes with water. A. (1) only B. (2) only C. (1) and (3) only D. (2) and (3) only 10. The two set-ups below are used to investigate how the angle between the inclined plane (斜面) and the ground affects the time for a block to move from the top of the plane to the ground.

Set-up 1 1 kg wooden block

inclined plane angle between the inclined plane and the ground

ground

Set-up 2

1 kg wooden block

Which of the following is/are the independent variable(s) in this investigation? (1) the weight of the wooden block (2) the time for the block to move from the top of the plane to the ground (3) the angle between the inclined plane and the ground A. (1) only B. (3) only C. (1) and (2) only D. (2) and (3) only

11. Which of the following objects is the heaviest? A. 10 g of iron B. 1000 g of water C. 1500 g of water D. 1 kg of feathers

12. Dr. Woo went to the Sahara Desert for a field study. During the field study, he made records about the changes in weather in a desert. Some of the data he recorded is shown below. Date: 15-7-2013 Dr. Woo’s Log Place: The Sahara Desert Book Start time: 10:00 am Weather condition: Sunny with a clear sky

Table 1: Time (min) 0 30 60 90 120 Relative humidity (%) 56 55 54 53 52 Table 2: Time (min) 0 30 60 90 120 Air temperature (°C) 35 38 41 44 47 What is the relative humidity at 11:30 am? A. 50% B. 52% C. 53% D. 56%

13. There is a fish in a beaker. If May wants to look at the fish carefully from the side, she should use A. a watch glass. B. a evaporating dish C. a test tube. D. a hand lens.

14. Which of the following is a non-living thing? A. flower B. grass C. desk D. tree

15. A horse is a living thing because it A. reacts to sound of master and runs. B. has hairs. C. has a tail. D. has big eyes.

16. The graph below shows the distribution of heights in a group of adult horses.

Distribution of heights in a group of adult horses

30 s e

o 20 h

r e b m u

0 130–140 140–150 150–160 160–170 170–180 Height (cm)

From the graph, we can tell that (1) height is a variation that exists among horses. (2) the most common range of height among this group of horses is 150–160 cm. (3) only horses with heights within 150–160 cm are normal. A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3)

17. The following diagram shows a poppy plant and a rabbit.

What can a poppy plant do but a rabbit cannot do? A. remove waste B. make its own food C. reproduce their offspring D. react to stimuli 18. Which of the following are habitats? (1) The rocky shore (2) The forest (3) The fresh water pond A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3)

19. Zebras are mammals because they A. can move. B. can breathe. C. have mammary glands. D. can walk.

20. Which of the following is a correct match between the animal and its classification? Animal Classification Animal Classification A. Frog Reptiles B. Shark Fish C. Turtle Amphibians D. Bat Birds

(B) True or False Statements (10 marks) Write 'T' for a true statement and 'F' for a false one 1. Astronomy is the study of the star and universe. 2. We can throw solid wastes into the sand bucket in the laboratory. 3. Before using a chemical, we should read the hazard warning labels on its container and take necessary safety precautions. 4. When we measure the volume of a liquid with a measuring cylinder, we should take the reading at the top of the meniscus. 5. All scientific inventions are good. 6. A beaker is the most accurate apparatus in the laboratory to measure the volume of liquids. 7. There is no animal living in the polar region since it is very cold. 8. Animals excrete some waste products in the form of urine. 9. Non-living things cannot show any characteristics of living things. 10. A shell is an external feature of a common gold fish.

(C) Matching (5 marks) Column A Column B 1. clothes catching fire A. measure the length 2. explosive B. cover the body with a fire blanket 3. ruler C. bar chart is used to show its distribution

4. a snail D. explode when heating 5. pulse rate E. invertebrate

(D) Fill in the blanks (20 marks) 1. The laboratory is a place where we do (a) ______. 2. When you get chemical burns, you should wash the affected area with (b)______for at least 10 minutes. 3. To transfer a small amount of solution in the laboratory, we can use a (c) ______. 4. Non-luminous flame is also called the (d) ______flame. 5. Sometimes a Bunsen burner may (e) ______if the air hole is fully open. You should turn off the (f) ______immediately. 6. We can use a (g) ______to measure temperature. 7. Scientists work like detectives. They start with making careful observation. They carry out experiments to collect evidence. Finally, they draw (h) ______from their experimental results. 8. In an investigation, the variables you will keep the same are called (i) ______variables. 9. We can use a (j)______to stir liquids. 10. After three months, a baby dog can (k) ______to about 1 metre long in body length. They usually (l) ______in four legs. 11. When we study a snail, its shell, body and tentacles are said to be the external (m) ______. 12. The natural environment where a living thing lives is called (n) ______. 13. The differences among the same kind of living things are called (o) ______. For example, the range of handspan, with or without earlobes. 14. (p) ______are animals that have a backbone 15. Birds have (q)______for flying. At the same time, they have (r) ______for feeding. 16. Among the five groups of vertebrates, (s) ______and (t) ______can maintain constant body temperatures.

(E) Short Questions (45 marks) 1. Write down the suitable units and symbols for the following measurements. (5 marks) Measurement Unit Symbol a. distance between Hong Kong and Taiwan on the map b. actual (真正的) distance between Hong Kong and Taiwan c. volume of a can of Coca Cola d. our body temperature e. weight of a packet of chocolate

2. The diagrams below show some apparatus used for heating in the laboratory.

A B C D (a) Name the apparatus. (4 marks) (b) Draw a labelled sectional diagram on the answer sheet to show how you boil water in a beaker using the above apparatus. (5 marks) (c) What should you wear when you light a Bunsen burner? (1 mark) [Total : 10 marks]

3. Kate tries to compare the rebound (反彈) height of a ping-pong ball on different ground surfaces. In her investigation, she tries to drop a ping-pong ball onto different surfaces and compare the rebound height.

ping-pong ball

Height that the ball is released

Rebound height

Kate summarises her data below. Ground surface Concrete Plastic Tile Grass Height that the ball is released 80 80 80 90 Rebound height 50 30 70 2 (a) What TWO pieces of informations are missing in Kate’s result table? (2 marks) (b) What instrument should Kate use to measure the height in the experiment? (1 mark) (c) Why the experiment of Kate is NOT fair? (1 mark) [Total : 4 marks]

4. Tom has four pieces of tissue paper of different brands(牌子)(A, B, C and D). He carries out a fair test to find out which tissue paper absorbs (吸收)water most quickly. He sets up the apparatus as shown below.

tissue paper strips

paper clip

A B C D

100 cm3 of water with 2 drops of red ink

(a) What is the use of the red ink? (1 mark) (b) What is the independent variable in this investigation? (1 mark) (c) Give TWO controlled variables in this investigation. (2 marks) After four minutes, Tom takes the tissue paper strips out of the beakers. He marks the water levels on the strips. He measures how far water has been soaked up in each paper strip. Below are the results:

Brand A mark

Brand B

Brand C

Brand D

(d) How far has water been soaked up in each paper strip? (4 marks) (e) Which brand of tissue paper absorbs water most quickly? (1 mark) [Total : 9 marks]

5. Read the following article about salmon (三文魚) and answer the questions that follow.

You have probably eaten salmons before. However, you may not know that salmons are very special. They travel between fresh water and salt water throughout their lives. They are born in freshwater rivers. Then they move to saltwater ocean to grow up. When they are ready to reproduce, they swim back to the freshwater river to lay eggs. After the eggs are laid, the adult salmons die and their bodies become the food for their baby salmons.

(a) What common characteristics of living things are mentioned in the article? Write down FOUR of them. (4 marks) (b) Which group of vertebrates do salmons belong to? (1 mark)

(c) List any TWO body features of the group of vertebrates mentioned in (b). (2 marks) [Total : 7 marks] 6. The following photographs show two animals caught by David.

Bee Spider

(a) To which main group do the two animals belong? Suggest a reason. (2 marks) (b) State TWO body features that can be used to distinguish the two animals from each other. (2 marks) [Total : 4 marks]

7. The table below shows the eye colours of a class of 40 students in an international school. Eye colours Number of pupil Blue 9 Green 3 Brown 18 Grey X (a) What is the value of X? (1 mark) (b) Fill in the missing pieces of informations on the answer sheet. (5 marks)

[Total : 6 marks] 10

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