Science Std IV Chapter 8

8. Keeping Safe

A. State whether true or false.
1. It is safe to run down the stairs.
2. We should not take medicines without consulting elders.
3. We should use zebra crossing to cross the road.
4. It is safe to talk on phone while driving.
5. We should use life jacket during swimming.

B. Answer the following questions.
1. How can we avoid accidents?
2. Mention three things we should be careful about when we are in the kitchen.
3. What are the safety measures we should adopt when we are in the bathroom?
4. How can we assure our safety outside the home?
5. What first aid will you give to the following people?
    (a) A person with a minor cut     (b) A person with a burnt finger
    (c) A person bitten by a bee      (d) A person who has fainted
6. What first aid should be given to a person who is bitten by an insect?
7. How can we assure safety outside home?
8. What can happen if a staircase doesn't have a hand railing?
9. What will happen if a person who doesn't know how to swim goes to
    swimming without wearing a life jacket?

C. Fill in the blanks.
1. We should handle sharp objects like ___________________ very carefully.
2. We should not leave soap bar on the ___________________ of the bathroom.
3. Use a life jacket when ___________________ in a ___________________.
4. We should not apply ___________________ or ___________________ on the
    burnt area.
5. If a ___________________ or ___________________ stings, we should apply
    a paste of baking soda and an antiseptic cream on the affected area.
6. To avoid ___________________, we should be careful and alert.

D. Tick the correct answer.
1. We should follow safety rules
   (a) only in the kitchen   (b) only in bathroom   (c) everywhere
2. We should walk
    (a) on the road.    (b) on the pavement    (c) anywhere
3. In case of a minor burn, wash the burnt area with
    (a) hot running water   (b) cold running water   (c) warm running water.
4. Which of these can be applied in case of a cut?
    (a) calamine lotion   (b) antiseptic cream   (c) butter
5. Which cloth material should we avoid wearing while helping our mother
    to cook?
    (a) Cotton   (b) Synthetic   (c) Wool
6. Which of these can be used in case of a burn?
    (a) Antiseptic cream   (b) Baking Soda   (c) Oil   (d) Antiseptic solution
7. Calamine or antiseptic lotion should be used in case of
    (a) insect bites  (b) minor burns  (c) cuts and wounds  (d) both (b) and (c)

E. Unscramble the following words.
(a) MACALINE   (b) NADABEG   (c) NOWUD   (d) TONCOT

Science Std IV Chapter 4

4. Adaptations for Survival in Animals

A. Fill in the blanks.

1. Terrestrial animals have well-developed _____________________ system
    and sense organs which enable them to sense the changes in their
    surroundings.
2. _____________________ have sharp cutting teeth called incisors.
3. Some animals imitate or mimic other animals for _____________________.
4. _____________________ is a process by which animals confuse their
    predators.

B. Answer the following questions.
1. What is an adaptation?
2. How is a camel adapted to live in hot deserts?
3. Give three adaptations of aquatic animals.
4. How are arboreal animals adapted to their habitat?
5. Mention the characteristic features of:
    (a) Parasites     (b) Carnivores       (c) Herbivores
6. What is camouflaging? Give examples of some animals that camouflage.
7. Why do some animals mimic other animals.
8. Who do we call the carnivores which eat the flesh of dead animals only?
9. Name a disease caused by parasites.
10. What do ducks and geese swim with the help of?
11. How do aquatic animals swim?

C. Match the following.
     Column A                               Column B
1. Birds                                    (a) Sucking tubes
2. Habitat                                 (b) Zebra
3. Blubber                                (c) Moth caterpillar
4. Camouflaging animal          (d) Hollow bones
5. Parasites                              (e) A thick layer of fat under the skin
6. Mimicry                                 (f) The natural home of an animal

D. Tick the correct answer
1. Which of these is an arboreal animal?
    (a) Peacock            (b) Monkey          (c) Bear
2. Which of these animals can blend with its surroundings and confuse its
    enemies?
    (a) Polar bear         (b) Giraffe        (c) Duck
3. Carnivores have sharp, pointed and curved front teeth called
    (a) molars            (b) incisors       (c) canines
4. The long sleep of animals during the cold season is called
    (a) adaptation      (b) hibernation      (c) migration
5. Aquatic animals breathe through their
    (a) lungs       (b) moist skin      (c) gills
6. Which of these have long and strong legs to travel long distances in 
    search of food?
    (a) Deer       (b) Lion      (c) Bear
7. Which of these is not an amphibian?
    (a) Lemur    (b) Frog     (c) Toad
8. Animals that can fly are called
    (a) amphibians    (b) aerial animals    (c) arboreal animals   (d) parasites

E. Name the categories to which these animals belong.
1. frogs, toads, salamanders, newts
2. mosquitoes, fleas, lice, leeches
3. monkeys, chimpanzees, flying squirrels, lemurs

F. Define
1. Habitat  2. Extinct Animals   3. Migration and migratory birds
4. Arboreal animals

G. State whether true or false.
1. Amphibians are animals that cannot live both on land and water.

H. Complete the following web charts.
1. 

2. 

I. Complete the given crossword puzzle with the help of the clues.
     Across
2. The natural home of an animal (7)
3. Changing body colour to blend with the surroundings (10)
6. Cows belong to this category (9)
    Down
1. An animal that survives on other living organisms (8)
4. Animals whose feet and hands are adapted for seizing, grasping and holding
    objects (8)
5. The act of imitating another organism (7)