DPS-Modern Indian School, Doha Qatar
Subject: GENERAL SCIENCE
Assignment: May 2012
Name: __________________
Date of sub. : 10/6/12
Class
grade: ________
:V
Sec: ________
Topics: Lesson 3: Interdependence Between Living Beings
Lesson 5: Air and Water
I.
Name the following:
a) Animals which eat or consume plants or other animals_____________.
b)
Part of the ecosystem formed by the breakdown of dead animals
and plants______________.
c)
The chain of eating or being eaten________________.
d)
Part of the air that is inactive _______________.
e)
The gas that is warmer and moist _______________.
f)
Insoluble substances left behind the filter paper ________________.
g)
The gas that supports burning____________________.
II. Select the odd one out and give reason :
1. Shoes, bags, ornaments, furniture, belts
______________________________________________________
2. Hyena, jackal, vulture, tiger, crow
_______________________________________________________
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3. Deer, lion, goat, plant, tiger
_______________________________________________________
4. Worms, fungi, bacteria, molds, mosquitoes
_________________________________________________________
III. Select the correct answer from the following:
1. Which of the gas is used to burn food in the tissues to give energy?
A. Carbon-dioxide
B. Oxygen
C. Nitrogen
D. All of these
2. Method used to separate soluble substances from water
A. Sedimentation and filtration
B. Sedimentation and evaporation
C. Evaporation and distillation
D. None of these
3. Which of the following does not require air pressure?
A. Working of an elevator
B. Working of a common lift pump
C. Working of an injection syringe
D. Filling up ink in a fountain pen
4. Substances insoluble in water
A. Sugar, salt, glucose
B. Coffee powder, horlicks, drinking chocolate
C. Chalk powder, pepper powder, talcum powder
D. None of these.
5. Filtration separates
A. Soluble substances from water
B. Insoluble substances from water
C. Germs from water
D. All of these
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IV. Give reasons for the following:
1. Plants are always at the beginning of a food chain
_________________________________________________________
_________________________________________________________
_________________________________________________________
2. What would happen if the following gases were absent from the atmosphere?
a)Oxygen
b) carbon dioxide
c)nitrogen
(Hint: Think of the importance of these gases in the atmosphere.)
_________________________________________________________
_________________________________________________________
_________________________________________________________
_________________________________________________________
_________________________________________________________
_________________________________________________________
3. Why doesn’t water spill out from a straw if you close its mouth with a finger?
(Hint: Can air enter the straw?)
_________________________________________________________
_________________________________________________________
_________________________________________________________
_________________________________________________________
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Down
1. An animal that eats other
animals.
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3. Plants need this to
produce their own food and
energy.
20
4. Mice should beware of
this predatory bird at night.
21
6. This carnivorous fish
lives in the Amazon.
Across
2. This monster shark is not dangerous
to people because it's a filter feeder.
It’s the biggest fish in the sea!
5. This predator hunts zebras and
antelope.
13. This omnivore eats berries in summer and
salmon in the fall.
16. A desert scavenger that can often be seen
flying above dead animals.
17. This is the largest animal in the world and
7. These are often at the bottom of food it is a filter feeder.
chains.
19. An animal that is hunted by other
8. An animal that eats both plants and
animals.
animals.
20. This insect spreads parasites when it
10. Zebra eats grass. Lion eats zebra.
drinks the blood of animals.
What is this an example of?
21. An animal that eats plants.
11. An animal that eats only insects.
7. An animal that lives in
another plant or animal and
eats that plant or animals
without killing it.
9. This insectivore has a
long tongue and nose,
which it uses to lick up
ants.
10. Many food chains
linked together.
12. An animal that finds
already dead animals to eat.
14. An animal that hunts
other animals.
15. Many filter feeders in
the ocean eat this.
18. Animals get this from
eating other animals.
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