Download II (Session 2015-16) Sample paper Class VIII Subject –Science (Set A)

Vikas Bharati Public School
Summative Assessment –II (Session 2015-16)
Sample paper
Class VIII
Subject –Science (Set A)
Time: 3 hrs.
MM: 90
Instructions: This Question paper consists of four pages.
All questions are compulsory.
The Multiple Choice Questions to be attempted in the answer sheet.
SECTION A
Q1. Complete the analogy :
a) Mercury : Planet :: Orion : _____________
b) Silt : Water pollutant:: _____________; Air pollutant
c) Testosterone: Male hormone :: ___ : Female hormone
d) Amoeba : Binary fission ::_______ : budding
e) Iron: hard:: __________; soft
Q2. Fill in the blanks:
a)
b)
c)
d)
e)
f)
g)
h)
i)
j)
(1 x 5 = 5)
(1 x 10 = 10)
The ozone layer absorbs harmful ________ radiations coming from the Sun.
The asteroid belt lies between the orbits of __________ and ________.
The automobiles should over to ________ petrol in the Taj Mehal zone.
_________ is a green house gas.
The stage at which moustaches and beard appear in boys is __________.
-_______ secretes growth hormone which is necessary for the normal growth of a person.
Most nonmetallic oxides are ___________ in nature.
The process of fusion of gametes is called ___________.
____________ is the distance travelled by light in one year.
__________ metal is the best conductor of electricity.
Q3. Correct the incorrect statements and rewrite:
a) Sodium metal is stored under water.
b) Oxygen has antiseptic properties.
c) Thyroid gland secretes adrenaline hormone.
d) The unfertilized egg is called Zygote.
e) Frog and fish reproduce by internal fertilization.
f) The right meal for adolescents consists of vegetables, dal and burger.
g) Planet Mercury is also called the red planet.
h) Kalpana -1 was the first Indian satellite.
i) Air pollution occurs only by natural sources.
j) Carbon di oxide lowers the amount of oxygen that enters the blood.
(1 x 10 = 10)
Q4. Answer the following questions in short:
a) Name a chemical used to purify water.
b) What are artificial satellites?
c) In Delhi, the use of CNG has been encouraged . Why ?
d) Define adolescence.
(1 x 15 =15)
e) What is the term used for secretions of endocrine glands responsible for changes taking place in the body?
f)
g)
h)
i)
j)
k)
l)
m)
n)
o)
What is balanced diet ?
Why is the Earth most suitable planet for life on it?
Name the place where embryo develops in human female.
Give the physical states at room temperature of the following ; mercury,calcium,oxygen,bromine
.
What happens when dilute sulphuric acid is poured on a copper plate ?
.
Metals are sonorous while non metals are non sonorous. What do you understand by this statement ?.
Write full form of CFC s . How are they harmful for the atmosphere ?
What is metamorphosis?
Draw sketch to show the relative position of prominent stars in Ursa Major.
Identify the constellation shown
Q5. Give two examples of each of the following:
a)
b)
c)
d)
e)
(2 x 5 = 10)
Alternative fuels
Celestial objects
Oviparous animals
Asexual reproduction
Malleable metals
Q6. Answer the following questions in brief:
(2 x 8=16)
a)
b)
c)
d)
e)
Jewellery can be made from silver, gold and platinum . Why ?
What are sex hormones ? Why are they called so ?
What is the importance of balanced diet , personal hygiene and physical exercise during adolescence ?
Differentiate between a meteor and meteorite.
What are the effects of acid rain ?
.
f) Planets never collide with each other during their revolution . Why ?
g) Will planting of more trees help in reducing the problem of carbon dioxide in the atmosphere ?Why ?
h) Fill the blanks :
Gland
1. Pancreas
2. Thyroid
Hormone
Q7.a). State the ways through which AIDS can be transmitted
b) Draw a diagram of human male gamete.
to the other person .
Q8. Label the diagram
(4)
(5)
SECTION B
(Multiple Choice Questions)
QA. Choose and write the correct answer for the following in the answer sheet:
1. The liquid metal is
a) aluminium
b) mercury
c) sodium
d) calcium
2. Which metal is the most reactive metal ?
a) gold
b) Platinum
c) sodium
d) Magnesium
3. Which one of the following is not related to the male reproductive system ?
4.
5.
6.
a) testes
b) penis
c) sperm duct
d) oviduct
External fertilization can be seen in
a) frog
b) hen
c) human beings
d) dog
Which one of the following reproduces by budding ?
a) hydra
b) amoeba
c) bacteria
d) mosquito
Adams apple is a term used for
(1 x 15 = 15)
a) thyroid gland
b) larynx
c) testes
d) ovary
7.
The growth hormone is secreted by the
a) pituitary gland
b) Adrenal gland
c) both (a) and (b)
d) thyroid gland
8.
The pole star is in the constellation of
a) Ursa major
b) Ursa minor
c) Orion
d) None of these
9. Which of these is not a secondary sexual characteristic ?
a) voice change
b) increase in height
c) release of testosterone
d) hair growth on body
10. The natural bodies present in the sky are known as
a) light bodies
b) celestial bodies
c) flying bodies
d) suspended bodies
11.
A water born disease is
a) asthma
b) jaundice
c) bronchitis
d) all of these
12. What is used as a coolant in refrigerators?
a) fossil fuels
b) water
c) CFCs
d) soot
13. Which of the following can cause acid rain ?
a) nitrogen
b) carbon dioxide
c) sulphur dioxide
d) hydrogen
14. Which of the following is not a planet ?
a) mercury
b) venus
c) saturn
d) sirius
15. Which of the following combination of chromosomes leads to the birth of a baby girl ?
a) XX
b) XY
c) X
d) None of these