BAF Shaheen Collage Dhaka Practice Pre-Test Examination-2020
Class: V (English Version) Subject: Elementary Science
Full Marks: 100 Time: 2:30 hours
1. Answer the following question in short : 2X15=30
a) What is pollination?b) What is Food Web?
c) Write down two ways of environmental pollution.
d) Write two effects of Noise pollution on human health.
e) What is Safe Water?
f) Write two uses of wind in our daily life.
g) Give two ways to prevent air pollution.
h) What is atom?
i) What are the three processes of heat transfer?
j) Give two ways of food Preservation.
k) What is Infectious Diseases?
l) What are two motions of the Earth?
m) Write two differences between Science and Technology?
n) What is internet?
o) Give two examples of the negative effects of technology.
1. Fill in the gaps with correct word (any twelve) 1X12=12
a) ____ helps plants to create new colonies.
b) Population growth is also the ____ cause of pollution.
c) _____ begins with the green plants.
d) Raising public awareness is one of the best ways to ______ environment.
e) Plants contain about _______ of water.
f) The change of state from a liquid to gas is called _______.
g) Light travels as _______.
h) Food preservation helps prevent the growth of ____.
i) _____ is a kind of infectious disease caused by HIV.
j) The distance from the Moon to the Earth is __________ km.
k) The 18th century was a period of great______ revolution.
l) Information sharing is an activity through which information is _______.
m) Earth’s axis is tilled at 23.5 degree at _____.
n) Effects of technology depend on it’s ______.
2. Match the left part of the sentence with the right part:
2X5=10
Left Right
a) In fire extinguisher, we use i) oxygen b) Patients with breathing problem are given ii) acid rain c) In a packet of chips, we use iii) air pollution d) A major cause of air pollution is iv) carbon-dioxide e) Cause of lung cancer is v) water pollution
vi) human activity vii) nitrogen
3. Answer any eight of the following question: 6X8=48
a) What is an ecosystem? How do animals depend on plants? 2+4=6 b) What is environmental conservation? How can we conserve our
environment? 2+4= 06 c) Explain the process of water cycle with diagram. 06 d) What is energy? How can we save energy? 2+4= 06 e) Write three important of balance diet and three important of food
preservation. 3+3=06 f) What is Puberty? Write two changes during Puberty and Write two
sentences about taking care of the body during Puberty. 2+2+2=06 g) Write two difference between planet and satellite. Why does season change?
Explain. 2+4=06
h) How does agricultural technology help to improve our life? 06 i) Give four names of devices for storing information. Explain how to collect
information through the internet. 2+4=06 j) How are the solar system, Milky Way Galaxy and the Universe related? 06
