Revision sheet cl-4
I. Fill in the blanks:
1. ______________ helps to remove the
waste material from the body.
2. Our heart beat ________ times in a
minute.
3. ________ carries pure blood from the
heart to different parts of the body.
4. Stomach takes about ___ to ________
hours for our body to digest the food.
5. Human beings normally breathe in and
out about ________ times in 1 minute.
6. Liver produces a digestive juice
known as ______________
7. Another name for outer Himalayas is ______________
8. _____________ forms the largest
alluvial plain.
9. In the north of deccan plateau lies
____________ mountain range.
10. ____________ is the world’s highest
mountain peak.
II. Tick the correct option:
1. Lungs are important (internal/external
) organs.
2. The (liver/brain) as controls over
every activity of the body.
3. The job of the large intestine is (to
digest food/ to throw away undigested food) from the body.
4. The shape of kidney is (bean/peas)
5. (Rib cage/spinal cage) protects our
heart and lungs.
6. Lakshadweep island are made of
(sand/corals).
7. The desert region of India is also
called (Yellow desert/ Thar Desert)
8. Large roads that connect towns and
cities are (highways/railways)
9. (Helicopters / aero planes ) were used during the Uttrakhand floods and
the Nepal earthquake.
10. The Television was invented by
(wright brothers/John Logia Beard)
III. Make the correct sequence/order of
the organs of the following:
1. Passage of air inside the body
lungs, windpipe, nose
2. Passage of food inside the body
Stomach, food pipe, small intestine,
mouth rectum, large intestine
IV. One word answer :
1. Sound of the heart while pumping the
blood is ______________
2. Name the internal organ which is
spongy bag filled with air ____________
3. The strong fibres that connect
muscles to bones ____________
4. Name the blood vessels that is blue
in colour which carry the impure blood to the heart ____________
5. Where are the strongest muscles
present in the human body _____________
6. Skull protects the _________
7. Name the longest coiled tube like
structure of the digestive system___________
8. Planting trees is known as
________________
9. The largest state and small state of
India are _________________ and __________
10. Himalayas in Sanskrit means ‘Abode
of Snow’.
11. The steam engine was invented by
_____________.
Give reasons:
1. Why do we compare human body with a
machine?
2. Why brain is consider as an important
organ of the human body?
3. Why we should be careful while
disposing waste and how does increasing population affect our surroundings?
4. Why should we not use plastic bags?
What are the alternatives for plastic bags?
VI. Answer these questions:
1. What is hygiene?
2. What are the causes of throwing solid
wastes in open area?
3.What are non-biodegradable materials
give examples?
4. What are bio-degradable
materials give examples?
5. Name three Rs used to protect the
environment?
6. What does dirty stagnant water
produce?
7. Draw concept map on keep our
surroundings clean and healthy.
8. What do you mean by compost?
9. What is pollution? Write different
types of pollution?
10. Write the full forms of WWW, CNG, NHAI , STD ,ISD, PIN, Email and G.T. Road?
