Question
✓
Answer
| Nature of sound | Unpleasant | Pleasant |
| 1. Speaking | ✓ | |
| 2. Whispering | ✓ | |
| 3. Aeroplane Sounds | ✓ | |
| 4. Horns of Vehicles | ✓ | |
| 5. Railway Engine | ✓ | |
| 6. Rustling of leaves | ✓ | |
| 7. Neighing of a horse | ✓ | |
| 8. Ticking of a clock | ✓ |
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Draw diagrams
Types of joints.
Types of joints.
1. Which are the various groups of foodstuff? Which main constituents of food do we get?
2. What trouble do we have to face if we do not get enough fibre from our daily diet?
3. What care must be taken to make sure that fibre is not lost or removed from the food we get?
(1) In the above activity, which are the different forces acting on the box?
(2) Is displacement possible without force?
(3) If force is applied to both the boxes is same, which box will be displaced more?
(4) If me e books are added to box, and same force is applied, will the displacement be more or less?
(5) If a force is applied with both the hands on a wall, will there be a displacement?
(6) If no displacement occurs on applying as force, what does it indicate?
Complete the puzzle using the words for types of motion.
1. A spring is stretched and one end is released.
2. A minute hand.
3. A see-saw.
4-5. Children in a march past.
6. A stone rolling down a hillside.
1. A spring is stretched and one end is released.
2. A minute hand.
3. A see-saw.
4-5. Children in a march past.
6. A stone rolling down a hillside.
Solve the following crossword puzzle.
Down:
1. ………. force is applied to push a scooter that has failed.
2. ………. force can be used to pick up scattered pins.
Down:
1. ………. force is applied to push a scooter that has failed.
2. ………. force can be used to pick up scattered pins.
Across:
3. A ………. pulls iron nails towards itself.
4. ……….. force is used when farm is ploughed with a tractor.
5. It is due to the force of ………… that raindrops fall to the ground.
Complete the tables given below
Nutrients | Source | Function |
1. Carbohydrates | Rice, chapatti | |
2. Fats | | Provide energy |
3. Proteins | Sprouts, meat, eggs | |
4. Vitamins | Vegetables, fruits | |
5. Fibre | | Help in excretion |
Classify the following as a lever, a pulley and an inclined plane:
(A wedge, a needle, a staircase, a slide, the wheel of a flagpole, nutcrackers, scissors, an opener, an axe, a crane, a knife)
(A wedge, a needle, a staircase, a slide, the wheel of a flagpole, nutcrackers, scissors, an opener, an axe, a crane, a knife)
Write the properties of the subtances
(water, glass, chalk, iron ball, sugar, salt, flour, coal, soil, pen, ink, soap)
(water, glass, chalk, iron ball, sugar, salt, flour, coal, soil, pen, ink, soap)
Complete the tables given below
Mineral | Source | Function |
1. Iron | | Carrying oxygen to all parts of the body |
2. Calcium, phosphorous | Milk, milk products, meat | |
3. Iodine | | Controls growth, speeds up chemical reactions in the body. |
4. Sodium and potassium | Salt, leafy vegetables, fruits, pulses | |
Complete the tables given below
Vitamins | Source | Function |
1. A | | Protects eyes, helps to keep skin, bones and teeth healthy. |
2. | Milk, fish, cereals | Helps in proper function of nerves and heart. |
3. B9 | Deep green vegetables, papaya, kiwi | |
4. | Meat, milk products | Formation of red blood cells |
5. C | | Protects body tissues |
6. D | On exposure to sunlight, Vitamin D is made in our body | |
7. E | Green leafy vegetables, vegetable oil | |
8. F | | Helps in clotting of blood |