顯示具有 1617-F2-QZ-answers 標籤的文章。 顯示所有文章
顯示具有 1617-F2-QZ-answers 標籤的文章。 顯示所有文章

2017年6月12日 星期一

F2 IS 2nd Term QZ 09: 11.1 anwers


11.1

Word Translation (10 marks)
i    Write down the English terms of the following Chinese terms:

Chinese term
English term
1
Brain
2
探測 / 感應
Detect
3
詮釋
Interpret
4
神經
Nerve
5
感受器
Receptor
6
作出反應
Respond
7
感覺
Sense
8
感覺器官
Sense organ
9
敏感
Sensitive
10
刺激
Stimuli

Multiple Choice (5 marks)
Circle the letter of the best answer for each question.
1.       To living things, a change in the surroundings is called a __________________ .
A.   sense                        B.    stimulus                  C.    response                         D.    sense organ

2.     Which of the following descriptions about sense organs are correct?
(I)       Sense organs contain receptors.
(II)      Sense organs can produce senses.
(III)    Sense organs can produce signals.
A. (I) and (II) only         B. (I) and (III) only                C. (II) and (III) only       D. (I), (II) and (III)

3.     Which of the following is NOT a stimulus concerned with air that can be detected by humans?
        A.    temperature of air                                    B.    movement of air
        C.    vibration of air                                         D.    oxygen concentration of air

4.     Which of the following is important for living things to survive?
        (I) find mates                          (II) find shelters                      (III) escape from dangers
 A. (I) and (II) only        B. (I) and (III) only             C. (II) and (III) only      D. (I), (II) and (III)

5.       Which of the following is/are a sense organ(s)?
          (I)   Skin                                 (II)   Brain                               (III) Tongue
          A.   (I) only                    B.    (II) only                   C.   (III) only                 D.    (I) and (III) only
  

Fill in the Blanks (20 marks)
1        Changes in the environment are called (1) stiumli. Living things can
(2) detect and (3) respond to them.
2        By responding to stimuli, living things can find (4) food / shelter / mate and escape from dangers.
3        We have five different (5) sense organs. For example,
l   eye detects (6) light and produces sense of (7) sight;
l   ear detects (8) sound and produces sense of (9) hearing;
l   nose detects (10) chemicals in air and produces sense of (11) smell;
l   (12) Tonge detects chemicals in food and produces sense of (13) taste;
l   (14) Skin detects things in contact with the skin and produce sense of heat, cold, touch, pain and pressure.
4        Different sense organs contain special kinds of cells called (15) receptors
which are (16) sensitive to particular kinds of stimuli. They detect stimuli and
send signals to our (17) brain through (18) nerve.
5        The brain (19) interprets signals and gives us (20) senses.

Challenging Questions (Bonus 2 marks)
1.      A person has normal eyes but cannot see well. Why?

Even the eye is normal, the person still cannot see well if his nerve and brain related to the sight has damage.

2017年5月29日 星期一

F2 IS 2nd Term QZ 08: 10.5 anwers


10.5

Word Translation (10 marks)
i    Write down the English terms of the following Chinese terms:

Chinese term
English term
1
酸雨
Acid rain
2
催化轉化器
Catalytic converter
3
Coal
4
溶解
Dissolve
5
燃料
Fuel
6
氮氧化合物
Nitrogen oxides
7
石油
Petroleum
8
污染物
Pollutant
9
發電廠
Power station
10
/ 二氧化硫
Sulphur / Sulphur dioxide

Multiple Choice (5 marks)
Circle the letter of the best answer for each question.
1.       Which of the following is the approximate pH value of clean rainwater?
A.   3.0                           B.    5.6                           C.    7.0                           D.    9.2

2.       Which of the followings are the sources of acidic pollutant gases in the air?
(I)           Motor vehicles
(II)         Hydro-electric power stations
(III)        Factories
A.   (I) and (II) only       B.    (I) and (III) only    C.    (II) and (III) only    D.    (I), (II) and (III)

 3.     Which of the following release the largest amount of acidic pollutant gases in Hong Kong?
A.   Traditional power stations                       B.    Factories
C.   Motor vehicles                                       D.    Households

4.       Which of the following are the effects of acid rain?
(I)           Corrode buildings and structures made of metals, marble and limestone
(II)         Make soil more suitable for the growth of plants
(III)        Kill fish in lakes and rivers
A.   (I) and (II) only       B.    (I) and (III) only    C.    (II) and (III) only    D.    (I), (II) and (III)

5.       Which of the following will NOT be damaged by acid rain?
A.   Marble statue
B.   Limestone building
C.   Plant leaf
D.   Copper water pipe

Fill in the Blanks (13 marks)
1        Rainwater with the pH value below 5.6 is regarded as (1) acid rain. It is mainly caused the
(2) pollutant gases like (3) Sulphur dioxide and nitrogen oxides,
which are released from traditional (4) power station and factories.
2        When (5) fuels are burnt in factories, and (6) petroleum are
burnt in engines of motor vehicles, pollutant gases are released. The gases (7) dissolve in
tiny water droplets in the air to form acidic clouds in the atmosphere.
3        Acids have (8) corrosive effects on some metals and building materials. They may
also damage leaves and make plants unable to carry out (9) photosynthesis.
4        Many fish and plants die if the pH value of water drops below (10) 5.
5        To reduce the emission of acidic pollutant gases, we should use alternative energy sources like
(11) solar / nuclear power and wind power.
7.        For driving, we should use high-grade fuels with a low (12) sulphur contents.
We can also reduce pollutants from the exhaust gas of motor vehicles by using
(13) catalytic converter.

Challenging Questions (Bonus 2 marks)
1.      Suggest how you can determine whether the rainwater is acid rain or not.
We can use pH meter to test for the rainwater. If the pH value is lower than 5.6, the rainwater is acid rain.
__________________________________________________________________________________
2.      What happens if the acidic rainwater drops on the marble floor?

The marble floor will be corroded.