CBSE Class 5 Science Air Skeletal System Worksheet

Air

Question I. Air is a mixture of gases and exists all around us. All living and many non-living things need air. Spot twelve things that need air in the word sleuth below. Colour them blue and write in the space provided.
Answer: Based on the grid, twelve items/things that use or need air are identified and listed below:
1. Glider
2. Windmill
3. Parachute
4. Balloon
5. Tire
6. Football
7. Basketball
8. Aeroplane
9. Helicopter
10. Hovercraft
11. Sailboat
12. Turbine
In simple words: Many objects like vehicles, toys, and machines need air to fly, move, or function properly.

Exam Tip: Word searches require careful scanning both horizontally, vertically, and diagonally for scientific terms.

Our Skeletal System

Question II.1. Identify the given diagram and answer the questions. (Diagram 1: Ribcage)
a) Name: Rib cage
b) Number of bones: 12 pairs (24 ribs total, plus the sternum)
c) It protects: Heart and lungs
Answer: The diagram shows the human rib cage, which forms a protective bony cage around vital thoracic organs.
In simple words: The rib cage is a bony structure that protects your heart and lungs from injury.

Exam Tip: Remember that ribs are counted in pairs (12 pairs) making a total of 24 individual ribs.

Question II.2. Identify the given diagram and answer the questions. (Diagram 2: Backbone / Spinal Column)
a) Name: Backbone (SpINE or vertebral column)
b) Number of bones: 33 small bones called vertebrae (26 in adults after fusion)
c) It protects: Spinal cord
Answer: The diagram represents the human backbone or vertebral column, running from the base of the skull down to the pelvis.
In simple words: The backbone consists of small stacked bones that support the body and protect the delicate spinal cord inside.

Exam Tip: Note the distinction between children (33 vertebrae) and adults (26 vertebrae due to fusion of lower vertebrae).