中一 科學試卷 (F1 Science Past Paper)
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內容節錄：
Secondary 1
Instructions:
Belilios Public School
Half-yearly Examination, 2015-2016
Integrated Science
MULTIPLE-CHOICE QUESTION PAPER
There are three sections in this paper.
1. Section A (Multiple-choice questions) carries 20 marks.
2. Section B (Fill in the blanks) carries 10 marks.
Time allowed: 1 hour
Maximum Marks: 100
3. Section C (Structured questions) carries 70 marks.
4. Answer ALL questions in this paper. Write your answers in the spaces provided in the
Question-Answer Book.
Eric uses a Bunsen burner to heat a piece of metal and a test tube of water respectively in the
laboratory.
Draw a labelled vertical section diagram of the Bunsen burner in the box below. (4%)
Which apparatus is used to hold the metal on heating? (1%)
He wants to heat up a solid as quickly as possible. In which part of the Bunsen flame should he place
the solid? Mark it with an "x". (1%)
When he is not using the Bunsen burner for a short while, he changes the flame to a yellow one. How
can he change the blue Bunsen flame to a yellow one? (1%)
Why is it necessary to change the Bunsen flame to a yellow one when he is not using the Bunsen
burner for a short while? (2%)
Now he is ready to heat a test tube of water. How much water should he added in the test tube? (1%)
How can he safely heat a test tube of water in the Bunsen flame? (2%)
State TWO safety precautions when he heats a test tube of water. (2%)
Peggy has a piece of cubic plasticine and a piece of cylindrical plasticine of the same volume. She
wants to compare how fast they sink in the glycerine (a kind of liquid). Therefore, she drops them into
two measuring cylinders containing glycerine respectively.
cubic plasticine
She draws a table to record her results as follows:
Cubic plasticine
Cylindrical plasticine
If the cubic plasticine sinks to the bottom of the measuring cylinder, the glycerine level becomes
41 cm³. What is the volume of this plasticine? (Show the steps of calculation) (2%)
Time taken for the plasticine to sink to
the bottom of the measuring cylinder
One important unit is missing in the table. What is it? (1%)
What apparatus should she use to measure the time taken for the plasticine to sink? (1%)
What is the independent variable in the experiment? (1%)
What is the dependent variable in the experiment? (1%)
cylindrical plasticine
State TWO controlled variables in the experiment. (2%)
What conclusion can she draw from the experimental results? (1%)
Her teacher suggests her to repeat the experiment several times. Why? (1%)
The following diagram shows a typical plant cell.
Label A to F. (6%)
Why is it a plant cell? Give TWO reasons to support your answer. (2%)
What is the function of structure B? (1%)
What is the function of structure C? (1%)
Mary is going to observe some onion skin cells under a light microscope.
Complete the steps how she prepares the slide of onion skin cells. (4%)
1) Use a pair of
to peel a thin piece of skin from the inside surface of the scale
2) Spread the onion skin on a slide. Add one or two drops of iodine solution to the onion skin.
3) Carefully cover the onion skin with a
Make sure no
to absorb any excess iodine solution.
If she uses a 4X eyepiece and a 40X objective to observe the onion skin cells, what is the total
magnification of the microscope? (Show the steps of calculation) (2%)
If she uses a 10X eyepiece instead, will she see more or fewer onion skin cells? (1%)
What is the use of adding iodine solution to the onion skin cells? (1%)
End of paper
Secondary 1
Instructions:
Belilios Public School
Half-yearly Examination, 2015-2016
Integrated Science
QUESTION-ANSWER BOOK
There are three sections in this paper.
1. Section A (Multiple-choice questions) carries 20 marks.
2. Section B (Fill in the blanks) carries 10 marks.
3. Section C (Structured questions) carries 70 marks.
4. Answer ALL questions in this paper. Write your answers in the spaces provided in the
Question-Answer Book.
Time allowed: 1 hour
Maximum Marks: 100
Section A: Multiple-choice questions
Question number
Question number
Section C: Structured questions
1. Identify which branch of science these scientists are studying.
Section B: Fill in the blanks
We can use fire extinguisher, sand bucket and fire blanket to put out fire in the laboratory.
A Bunsen burner should be placed on the heat-proof mat so that the bench can be protected.
Sometimes the Bunsen burner may strike back if the air hole is fully open. The flame changes to
green colour and you hear a loud noise. You should turn off the gas tap immediately and inform your
We can use a balance to measure the weight/mass of a book.
The image of an object seen under a microscope is inverted and magnified when compared with the
In a microscope, the coarse adjustment knob is used to adjust the distance between the objective and
the stage/ object in a large extent for focusing.
An amoeba carries out asexual reproduction to produce offspring.
Susan is studying the movement of stars. (1%)
Branch of Science: Astronomy
John is studying the eating habits of a panda. (1%)
Branch of Science: Biology/Zoology
May is calculating the amount of fuel needed to launch a
rocket. (1%)
Branch of Science: Physics
Danny has bought a bottle of domestic cleansing agent. He finds that the container has the following
hazard warning symbol.
What potential hazard does the cleansing agent have? (1%)
Harmful / irritant
Write down TWO safety precautions that Danny should take when he uses the cleansing agent. (4%)
He should avoid breathing the vapour./
He should avoid contact with the eyes / He should avoid contact with the skin.
(He should wear safety goggles / protective gloves.) (Any TWO)
What immediate action should Danny take if the above chemical is in contact with his skin? (2%)
He should wash the affected area with plenty of running water.
Tony is mixing some solutions in the laboratory as shown in the figure below.
In the above figure, circle THREE mistakes that he has made in the experiment. (3 %)
Suggest what he should do to correct the mistakes. (3%)
He should wear the safety goggles./
He has to take necessary safety precaution(s) before transferring the solution.
Why shouldn't he pour excess solution back into the reagent bottle? (2%)
To avoid getting impurities into the reagent bottle/to avoid contamination.
If he wants to transfer small amount of solution, what kind of apparatus should he use? (1%)
He should use a dropper.
He should remove one stopper at each time and pour the solutions one by one.
(He should put the stopper back into the reagent bottle as soon as he has finished pouring.)/
While he is pouring the solution, he should turn off the Bunsen burner.
(He should not leave the Bunsen burner unattended.)/
His palm should face the label of a reagent bottle when pouring liquid so as to prevent
staining the label. (Other reasonable answers) Any THREE
Before transferring the solution, why should he read the hazard warning symbol on the reagent bottle
first? (1%)
The diagrams below show some mistakes Susan makes when she is using the following measuring
instrument in an experiment.
After 2 seconds
Name the above instrument. (1%)
Thermometer
What is the use of the above instrument in the experiment? (1%)
It is used to measure the temperature of the hot water.
State TWO common liquids in the bulb of the above instrument? (2%)
Mercury (1) and alcohol (1) are the common liquids in the bulb of the above instrument.
State ONE safety precaution when she uses the above instrument. (1%)
Never leave it near the edge of a bench./
Never stir water with it. (Any ONE) (Other reasonable answers)
Point out THREE mistakes she makes in the experiment. (3%)
The bulb of the thermometer should not touch the bottom of the container.
Her eyes should be at the same level with the reading./ the top of the coloured
column of the alcohol (mercury).
Mistake 3: She should wait for one to two minutes until the reading of the thermometer
becomes stable before she takes the reading.
Eric uses a Bunsen burner to heat a piece of metal and a test tube of water respectively in the
laboratory.
Draw a labelled vertical section diagram of the Bunsen burner in the box below. (4%)
Drawing: 1 mark
Any three correct labels: 3 marks
Which apparatus is used to hold the metal on heating? (1%)
A pair of tongs
He wants to heat up a solid as quickly as possible. In which part of the Bunsen flame should he place
the solid? Mark it with an "x". (1%)
rubber tubing.
When he is not using the Bunsen burner for a short while, he changes the flame to a yellow one. How
can he change the blue Bunsen flame to a yellow one? (1%)
He can close the air hole.
Why is it necessary to change the Bunsen flame to a yellow one when he is not using the Bunsen
burner for a short while? (2%)
Yellow flame is easier to be seen (1) and so he can be more aware of the Bunsen flame.(1)
Now he is ready to heat a test tube of water. How much water should he added in the test tube? (1%)
He should add some water to a test tube until it is about one-third full.
How can he safely heat a test tube of water in the Bunsen flame? (2%)
He has to heat the water by swirling the test tube (1) over a low/small blue flame.(1)
(Other reasonable answers)
State TWO safety precautions when he heats a test tube of water. (2%)
Do not point the mouth of the test tube towards anyone during heating./Tie up long hair./
The hand should be lower than the top of the chimney./Do not touch the chimney of a lighted
Bunsen burner./Wear safety goggles, etc. (Any TWO) (Other reasonable answers)
Peggy has a piece of cubic plasticine and a piece of cylindrical plasticine of the same volume. She
wants to compare how fast they sink in the glycerine (a kind of liquid). Therefore, she drops them into
two measuring cylinders containing glycerine respectively.
cubic plasticine
She draws a table to record her results as follows:
Cubic plasticine
Cylindrical plasticine
If the cubic plasticine sinks to the bottom of the measuring cylinder, the glycerine level becomes
41 cm³. What is the volume of this plasticine? (Show the steps of calculation) (2%)
41-37= 4 cm³
One important unit is missing in the table. What is it? (1%)
What apparatus should she use to measure the time taken for the plasticine to sink? (1%)
What is the independent variable in the experiment? (1%)
The types of plasticine/ Cubic plasticine and cylindrical plasticine
What is the dependent variable in the experiment? (1%)
cylindrical plasticine
Time taken for the plasticine to sink to
the bottom of the measuring cylinder
The time taken for the plasticine to sink to the bottom of the measuring cylinder
State TWO controlled variables in the experiment. (2%)
The height where the plasticine is released./The amount of glycerine in the measuring cylinder./
The size/type of the measuring cylinders, etc. (Any TWO) (Other reasonable answers)
What conclusion can she draw from the experimental results? (1%)
Cylindrical plasticine sinks faster in the glycerine than cubic one. (or vice versa)
Her teacher suggests her to repeat the experiment several times. Why? (1%)
The results will be more accurate or more reliable./Repeated measurements can reduce errors.
The following diagram shows a typical plant cell.
Chemical reactions take place there.
What is the function of structure C? (1%)
It controls the activities of the cell.
Label A to F. (6%)
B: cytoplasm
D: cell membrane E: cell wall
F: chloroplast
Why is it a plant cell? Give TWO reasons to support your answer. (2%)
It is a plant cell because it has a cell wall. /Besides, it has a large vacuole. /some chloroplasts
What is the function of structure B? (1%)
Mary is going to observe some onion skin cells under a light microscope.
Complete the steps how she prepares the slide of onion skin cells. (4%)
1) Use a pair of forceps to peel a thin piece of skin from the inside surface of the scale leaf.
2) Spread the onion skin on a slide. Add one or two drops of iodine solution to the onion skin.
3) Carefully cover the onion skin with a cover slip. Make sure no air bubbles are trapped.
4) Use tissue paper to absorb any excess iodine solution.
If she uses a 4X eyepiece and a 40X objective to observe the onion skin cells, what is the total
magnification of the microscope? (Show the steps of calculation) (2%)
If she uses a 10X eyepiece instead, will she see more or fewer onion skin cells? (1%)
She will see fewer onion cells.
What is the use of adding iodine solution to the onion skin cells? (1%)
It is used to stain the onion skin cells for easy observation.
End of paper
Section A: Multiple-choice Questions (20 marks)
Write your answers in the spaces provided in the Question-Answer Book.
1. Which of the following is NOT an observation about a burning candle?
A. The wax melts when the wick is lit.
B. The burning candle gives out a lot of smoke.
The wax is produced from petroleum.
The inner cone of the flame is blue.
2. Which of the following is/are (a) scientific invention(s)?
(1) force between magnets
(2) dictionary
(3) optic fibres
(4) television
A. (1) only
(3) and (4) only
(1), (3) and (4) only
3. Which of the following hazard warning symbol can be found on an aerosol can of hair spray?
4. Julia pours some hot water into a metal can. She measures the water temperature (in degrees Celsius)
at 1-minute intervals and draws a graph to represent her results.
How should she label the x-axis and y-axis respectively?
A. time (min)
B. time (min)
temperature (°C)
5. Which of the following conversions of units is/ are correct?
(1) 1 L 100 mL
(2) 1 mL = 1 cm
(3) 1 m = 0.1 km
(4) 1 kg = 1000 g
A. (1) only
B. (3) only
(1) and (2) only
(2) and (4) only
temperature (°C)
temperature (degrees)
temperature
The correct steps of lighting a Bunsen burner are:
Open the air hole, turn on the gas tap, strike a match, light above the chimney.
Close the air hole, turn on the gas tap, strike a match, light above the chimney.
Close the air hole, strike a match, light above the chimney, turn on the gas tap.
Strike a match, open the air hole, turn on the gas tap, light above the chimney.
Which of the following variables should be kept the same in a fair test?
(1) Controlled variables
(2) Independent variable
(3) Dependent variable
A. (1) only
(1) and (3) only
(2) and (3) only
Which of the following represents the largest increase in temperature?
- 10 °C to 110 °C
10 °℃ to 110 °C
C. 110 °C to 210 °C
- 70 °C to 100 °C
Which of the following should be used to stir liquid in a beaker?
Thermometer
Wooden splint
C. Chopstick
D. Glass rod
10. When the air hole of a Bunsen burner is closed, the flame is
A. luminous.
D. very hot.
11. Which of the following apparatus can be used to hold liquids when heating?
(1) Test tubes
(2) Reagent bottle
A. (1) only
B. (2) only
(1) and (2) only
(1) and (3) only
12. What should we do if the experimental results do not support the hypothesis?
(1) Modify the experiment.
(2) Propose another hypothesis.
(3) Change the experimental results.
(1) and (2) only
(1) and (3) only
(1), (2) and (3)
13. Which of the following apparatus can accurately measure small time intervals?
B. Hourglass
C. Stopwatch
14. What is the volume of the cork?
(3) Nerve cells
A. (1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
15. Which of the following are single-celled organisms?
(2) Bacteria
16. Which of the following statements about cells is incorrect?
A. Cells are the basic units of living things.
B. Cheek cells have irregular shapes.
Skin cells can be observed by naked eyes.
D. Single-celled organisms have only one cell.
17. Which of the following about cell division is correct?
(1) The cytoplasm divides into two.
(2) The nucleus divides into two.
(3) Four daughter cells are formed.
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
18. The photo below shows a microscope.
What are parts X and Y respectively?
19. Which of the following steps is INCORRECT when using a microscope?
Adjust the mirror to reflect light.
Choose an eyepiece and an objective with the highest magnification in the beginning.
Carefully lower the objective until it is just above the slide.
Turn the fine adjustment knob until the object is clearly seen.
20. What is the importance of cell division to living things?
A. For growth
B. To release energy
C. To support movement of living things
To remove waste
End of Section A
Go on to Question-Answer Book for questions in Section B and C
Secondary 1
Instructions:
Belilios Public School
Half-yearly Examination, 2015-2016
Integrated Science
QUESTION-ANSWER BOOK
There are three sections in this paper.
1. Section A (Multiple-choice questions) carries 20 marks.
2. Section B (Fill in the blanks) carries 10 marks.
3. Section C (Structured questions) carries 70 marks.
4. Answer ALL questions in this paper. Write your answers in the spaces provided in the
Question-Answer Book.
Time allowed: 1 hour
Maximum Marks: 100
Section A: Multiple-choice questions
Question number
Question number 11
Section B: Fill in the blanks
A Bunsen burner should be placed on the
Sometimes the Bunsen burner may
changes to green colour and you hear a loud noise. You should
immediately and inform your
We can use a balance to measure the
In a microscope, the
objective and the
An amoeba carries out
The image of an object seen under a microscope is
compared with the object.
Section C: Structured questions
1. Identify which branch of science these scientists are studying.
in a large extent for focusing.
sand bucket and fire blanket to put out fire in the laboratory.
so that the bench can be
if the air hole is fully open. The flame
the gas tap
reproduction to produce offspring.
and magnified when
is used to adjust the distance between the
John is studying the eating habits of a panda. (1%)
Branch of Science:
Susan is studying the movement of stars. (1%)
Branch of Science:
May is calculating the amount of fuel needed to launch a
rocket. (1%)
Branch of Science:
a) What potential hazard does the cleansing agent have? (1%)
Danny has bought a bottle of domestic cleansing agent. He finds that the container has the following
hazard warning symbol.
Write down TWO safety precautions that Danny should take when he uses the cleansing agent. (4%)
What immediate action should Danny take if the above chemical is in contact with his skin? (2%)
Tony is mixing some solutions in the laboratory as shown in the figure below.
In the above figure, circle THREE mistakes that he has made in the experiment. (3 %)
Suggest what he should do to correct the mistakes. (3%)
Before transferring the solution, why should he read the hazard warning symbol on the reagent bottle
first? (1%)
Why shouldn't he pour excess solution back into the reagent bottle? (2%)
If he wants to transfer small amount of solution, what kind of apparatus should he use? (1%)
The diagrams below show some mistakes Susan makes when she is using the following measuring
instrument in an experiment.
Name the above instrument. (1%)
After 2 seconds
What is the use of the above instrument in the experiment? (1%)
State TWO common liquids in the bulb of the above instrument? (2%)
State ONE safety precaution when she uses the above instrument. (1%)
Point out THREE mistakes she makes in the experiment. (3%)