‫ الجبيل‬- ‫المدرسة العالمية الهندية‬
INTERNATIONAL INDIAN SCHOOL, AL-JUBAIL
Eastern Province – Kingdom of Saudi Arabia
‫المنطقة الشرقية – المملكة العربية السعودية‬
SUMMATIVE ASSESSMENT- II MARCH 2015
SUBJECT:
SCIENCE
CLASS:
VIII
M/MARK:
90
TIME:
BIOLOGY (30 Marks)
Q1. Define the following terms:a) Flora
b) Species
(1+1+1 =3)
c) Target site
Q2. What is the term used for a species found in a particular habitat?
(1)
Q3. What is the forest conservation act of India?
(1)
Q4. Name the causative agent for the disease AIDS?
(1)
Q5. Differentiate between the following: i) Endangered and extinct species ii) Zygote and Foetus
(2+2=4)
Q6. What is balanced diet? Write two examples of iron-rich foods?
(2)
Q7. Protected forests are not completely safe for wild animals. Why?
(2)
Q8. Differentiate between two types of animals in which internal fertilization takes place. (2)
Q9. Write two effects of deforestation on earth?
(3)
Q10. a)
b)
(1)
(2)
Define asexual reproduction.
Represent diagrammatically binary fission in Amoeba.
Q11. Write Short notes on: a) Adam’s apple.
b) Function of adrenalin
Q12.
i)
ii)
iii)
(3)
(1+1+3 =5)
Write the names of sex hormones.
(1)
What are the sex chromosomes for male and female?
(1)
How do sex chromosomes play a role in determining the sex of foetus? (3)
1
3 Hours
PHYSICS (30 Marks)
I.
Choose the correct option.4 X ½ = 2 M
1.When electrolysis of water is carried out, water is decomposed into ( )
a) Oxygen gas only b) Both oxygen and hydrogen
c )Hydrogen only d) None of these
2. Which one of the following musical instruments is different from others (
a) Guitar b) Veena c) Violin d) Flute
3. The unit of loudness is ( )
a) Hertz b) Decibel c) Metre d) Volt
4. Which one of the following sounds can be heard by humans
a) 100 Hz b) 10 Hz c) 100000 Hz d) None of these
II.
Fill in the blanks
)
5X½ =2½ M
1.
Air allows the passage of electric current during--------------.
2.
Sounds more than --------------- Hz are called ultrasonic sounds .
3.
Loudness is determined by the ------------------ of vibration.
4.
--------------- water is free of salts.
5.
The passage of an electric current through a solution causes
------------------ effect.
III. State True or False.
1.
2.
3.
4.
4X½ =2M
Cans used for storing food are made by electroplating zinc on iron.----------Impurities in water increases conductivity.---------Sound cannot travel in vacuum.--------------The lower the frequency of vibration, the higher is the pitch.----------
IV. Give reasons . 3 X 1 ½ = 4 ½ M
1.
Which isseen or heard earlier/later lightning or thunder, even though both take
place in the sky at the same time and at the same distance from us. Explain.
2. Is it safe for an electrician to repair a faulty wire in the park when it is
raining heavily? Explain.
3.
Chromium plating is done on car parts, bath taps, wheel rims etc.
V. Write the differences between the following 2 x 2 = 4 M
1. Music and noise.
2. Good conductors and poor conductors.
2
VI. Answer the following ( 15M)
1. (a) A pendulum makes 20 oscillations in 40 seconds. Find its time period and
frequency.2M
(b) Draw wave forms for drum sound (low pitch) and whistle sound (high pitch) . 1M
2. Write three harmful effects of noise pollution. Suggest three ways to reduce
noise pollution.
3M
3.
Sketch larynx and explain its function
OR
Explain an activity to construct and show the working model of an ear
drum.
3M
4. Write the full form of LED. Why it can be placed in the place of
a bulb in the tester?
2M
5.
What is electroplating? Explain the process of electroplating with the help
of a labelled diagram.
OR
Name any two effects of electric current. Explain anactivity to make a tester
using the magnetic effect of current to check the conductivity of lemon juice and milk
with the help of a labelled diagram.
4M
CHEMISTRY (30 Marks)
1. What are inflammable substances ?
1m
2.What is Richter scale ?
1m
3. What is potable water ?
1m
4. Sometimes a crackling sound is heard while taking of sweater during winter. Explain.
2m
5. Increased level of nutrients in the water affect the survival of aquatic organisms. Why? 2m
6. Which is combustion among the following processes?. Why?
2m
1. Rusting of iron
2. Burning of charcoal.
7. What is marble cancer? Name any two gases which cause acid rain.
3
1+1=2m
8. What is the importance of the presence of CO2 in the atmosphere?
What will happen if its concentration in the air increases?
2m
9. What is lightning rod? Do not lie on the ground while lightning. Why?
1+1=2m
10. Which type of combustion takes place when white phosphorous catch fire?.Explain.
2m
11. Compare LPG and wood as fuel.
3m
12. Draw a candle flame and label the hottest and the least hot regions. Give reason.
3m
13.
1+3+1=5m
i) What is calorific value of a fuel?
ii) Complete the table with needed calculations
Name of
Weight
Energy
produced
90000kJ
the fuel
Kerosene
Biogas
2 kg
2.5 kg
Calorific
value
40000kJ/kg
iii).Identify the efficient fuel from the table.
14. Label the diagram with the following points.
2m
a) epicenter
b) seismic waves
c) focus
d) fault zone
4
5