Mid Terminal Examination-2073
Subject: Science Full Mark: 100
Class: VII Time:
3 Hrs. Pass Mark: 40
1. Choose the correct alternatives. [10]
a) Which of the following is known as a double
inclined plane?
i)
lever ii) wedge iii) wheel and axle
b) Which of the following is an example of first
class lever?
i)
see-saw ii) bottle
opener iii) knife
c) The weight of a box is 300 N and the area of
its bottom is 50 m2. The pressure exerted by the box on the ground
is ………
i)
5pa ii)
6pa iii) 3pa
d) Which formula is used to determine the work
done by force?
i)
w=f×s ii)
F=w×s iii)
d= F×s
e) The energy of a moving body is called ……..
i)
Kinetic energy ii) potential
energy
iii)
light energy
f) Brass is homogeneous mixture of ……….
i)
zinc + copper ii) Tin + copper
iii)
Nickel + chromium
g) ……….. is the non- metal which is good
conductor of heat and electricity.
i)
iodine ii)
graphite iii)
Sulphur
h) Due to property of ….. in metal, it can be
drawn into wire
i)
malleability ii) ductility iii)
sonorous
i) What is not found in animal?
i)
cell wall ii) centrosome iii) Nucleus
j) Ozone is found in
i)
thermosphere ii) exosphere
iii)
stratosphere
2. Fill in the blanks. [6]
a.
A
wheel barrow belongs to the ……… class lever.
b.
A
school bag has wide straps, which helps to ……….. Pressure.
c.
The
formula to calculate power is: power = ……..
d.
The
deficiency of iodine in thyroid causes ……….
e.
The
outer covering of a plant cell is called………..
f.
Atmosphere
has gases, water vapours and …………
3. Write true and false in the given statement.
[6]
a.
In
a fixed pulley, load can be lifted using less effort.
b.
A
sharp knife cuts easily than blunt one.
c.
Aluminium
is bad conductor of heat.
d.
Sulphur
is malleable and ductile.
e.
Plastids
are not found in animal cells.
f.
Large
vacuoles are found in plant cells.
4. Match the following : [5]
Atmosphere high temperature
Land
breeze water cycle
Sea
breeze night time
Troposphere five layers
Thermosphere day time
5. Name any two. [4]
Types of simple machine, Energy,
Alloys, Metalloids
6. Give reasons. [10]
a.
In
what way is the wheel and axle useful to us?
b.
Wheel
of tractor is made wider.
c.
A
man pushes a wall, but fails to do so. What is amount of work done by man? Why?
d.
Sulphur
is a non- metal.
e.
Mitochondria
is known as power house of the cell.
Group “A" [Physics]
Answer the
following questions.
1.
What
is simple machine? Why do we use simple machine? [2]
2.
Define
a lever. Give two example of the second class lever. [3]
3.
What
are the factors on which pressure depend? [2]
4.
Write
any three uses of pressure in our daily life. [3]
5.
What
is work? Write its SI and CGS unit. [3]
6.
What
is energy? Give its SI unit. [2]
7.
Write
two differences between kinetic and potential energy. [2]
8.
A
crane lifts up a load of 1000N through a height of 10 m in 25 seconds. What is
its power? Is it the work done against the gravity or friction? [3]
Group "B" [ Chemistry]
9.
What
is non- metal? Give two examples. [2]
10.
What
is tincture of iodine? [2]
11.
What
do you mean by sonorous? [2]
12.
Write
two uses of brass. [2]
13.
How
is Iodine essential for human health? [2]
Group "C" [ Biology]
14.
Draw
the life process in amoeba and label it. [3]
15.
What
are Golgi body? Write its two function. [3]
16.
What
are tentacles? Write one function. [2]
17.
Write
two differences between mitochondria and vacuole.
18.
What
is nuclear membrane? [1]
Group "D" [ Astronomy and
geology ]
19.
What
are the different layers of atmosphere? Write their name.
20.
Write
two characteristic of stratosphere. [2]
21.
Write
two differences between Troposphere and exosphere. [2]
22.
How
does the sea and land breeze develop? [4]
23.
Name
the three weather instruments. [3]
Group "E" [ Environment ]
24.
Explain
the concept of sustainable development. [2]
25.
What
is nature friendly development? Why is this development necessary? [3]
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