Safety and First Aid - 2 Class 4 Worksheet Science

Q1: Fill in the Blanks.

(i) In case of a fire, use a ____________ to put out the flames.
Ans: fire extinguisher
A fire extinguisher is a device used to control small fires. It contains chemicals that can put out flames by cutting off the supply of oxygen or cooling the fire.

(ii) The emergency number to call for help in many countries is ____________.
Ans: 911
In many countries, including the United States, 911 is the emergency number to call for immediate assistance from the police, fire department, or ambulance service.

(iii) While crossing the road, always use a ____________ to be safe.
Ans: pedestrian crossing
A pedestrian crossing, also known as a crosswalk, is a designated area for pedestrians to safely cross the road. It is marked with white stripes and often has traffic signals.

(iv) To avoid accidents, it is essential to follow ____________ while riding a bicycle.
Ans: traffic rules
Following traffic rules while riding a bicycle is crucial to ensure safety on the road. This includes obeying traffic signals, using hand signals, and wearing a helmet.

(v) When someone is unconscious, you should immediately call for ____________.
Ans: medical help
If you encounter someone who is unconscious, it is essential to call for medical help immediately to ensure they receive the necessary medical attention.

Q2: Match the Column.

Ans: a) Burn Injuries - ii) Run cool water over the burn
For burn injuries, it's essential to cool the affected area by running cool water over it to reduce the heat and minimize tissue damage.
b) Cuts and Wounds - iii) Cover the cut with a bandage
When someone has a cut or wound, it's important to clean it and cover it with a bandage to prevent infection and aid in the healing process.
c) Nosebleeds - iv) Pinch the nostrils and lean forward
During a nosebleed, the person should pinch the nostrils together and lean forward to help stop the bleeding and prevent blood from flowing down the throat.
d) Sprains - i) Rest the injured body part
When someone experiences a sprain, it's crucial to rest the injured body part to avoid further damage and allow it to heal properly.
e) Fainting - v) Apply ice to reduce swelling
If someone faints, applying ice can help reduce swelling in case of any injuries sustained during the fall.

Q3: True or False.

(i) First look at your left side before crossing the road.
Ans: False
When crossing the road, you should look both ways, left and right, to ensure there are no oncoming vehicles from either direction.

(ii) Always wait for your turn at the swings in the playground.
Ans: False
While it is generally good manners to wait for your turn at the swings, this is not always followed in playgrounds, especially when there are many children playing. It's important to ensure safety and not rush or push others while waiting for a turn.

(iii) The immediate help given to an injured person is called antiseptic.
Ans: False
Antiseptic refers to substances or treatments used to clean and disinfect wounds or injuries to prevent infection.

(iv) To make something completely clean and free of germs is known as unsterilize.
Ans: False
"Unsterilize" is not a commonly used term. The correct term for making something completely clean and free of germs is "sterilize."

(v) The immediate help given to an injured person before proper medical help arrives is called first aid.
Ans: True
First aid refers to the initial assistance or treatment provided to an injured or ill person before professional medical help becomes available.

(vi) The thin cotton cloth which is used for covering wounds is called band aid.
Ans: False
A band-aid is a brand name for a type of adhesive bandage, which is a small adhesive strip with a gauze pad in the center. The thin cotton cloth used for covering wounds is called "gauze."

(vii) To make something completely clean and free of germs is known as sterilize.
Ans: True
Sterilization is the process of completely eliminating all forms of bacteria, viruses, and other microorganisms to achieve a germ-free state.

(viii) Wipe the wound always with cotton dipped in a few drops of moisturizing lotion.
Ans: False
Wiping a wound with cotton dipped in moisturizing lotion is not recommended. When treating a wound, it is essential to clean it with an antiseptic solution or clean water and then apply an appropriate dressing.

(ix) The thin cotton cloth which is used for covering wounds is called gauze.
Ans: True
Correct, gauze is a thin, loosely woven cotton fabric commonly used for dressing wounds as it allows air circulation and aids in the healing process.

Q3: Short Questions Answers.

(i) What should you do if you accidentally touch a hot object and get a burn?
Ans: Run cool water over the burn immediately.
Running cool water over the burn helps to cool down the affected area and prevent further damage to the skin.

(ii) Why is it important to wear a helmet while riding a bicycle?
Ans: Wearing a helmet provides protection to the head in case of accidents and reduces the risk of head injuries.
Helmets absorb the impact of a fall and can significantly minimize the severity of head injuries during bicycle accidents.

(iii) How can you help someone who is choking?
Ans: Perform the Heimlich maneuver by giving abdominal thrusts.
The Heimlich maneuver can dislodge the obstructing object from the person's airway and help them breathe again.

(iv) What should you do if you find a person unconscious but breathing?
Ans: Call for medical help immediately.
Even if the person is breathing, unconsciousness may be a sign of a serious medical condition that requires immediate attention.

(v) Name two essential items present in a basic first aid kit.
Ans: Bandages and antiseptic solution.
Bandages are used to cover wounds, and antiseptic solution helps clean wounds and prevent infections.