Procedure A:
1. Take some sand in beaker.
2. Place a cardsheet on it and keep a metal coin in the centre.
3. Now strike a cardsheet with a flick of the finger.
Procedure B:
1. Take some soil in a flat container. Mix it with water and keep the container near the legs
of the table.
2. Push the wooden and metal block of same size in such a way that they fall in the flat
container.
3. Observe the impressions created by the blocks in the soil mixture in the container.
Procedure C:
1. Tie a balloon tightly to a light weighted rubber tube.
2. Inflate the balloon by blowing through the rubber tube and tightly close the end of the
rubber tube by pressing with finger.
3. Without detaching the finger, place the balloon on a flat surface and then remove the
finger.
Observation : Observe the three procedures carefully and notedown the observations:
Answers
Answer:
Ram takes water in a transparent container which is at least 18-20cm long.
He adds 2-3 drops of milk and shines a powerful torch through the water. He
looks from the side of the container and finds that the color of the milk-water
mixture changes with distance from the torch. Near the torch, it’s a different
color and at the other end, it’s different. He found that as he added more
drops of milk in the container, the colours became darker.
(a) (i) What color does he observe at the end that is near the torch?
(ii) What color does he observe at the other end of the container?State the
reason for each case
Ram takes water in a transparent container which is at least 18-20cm long.
He adds 2-3 drops of milk and shines a powerful torch through the water. He
looks from the side of the container and finds that the color of the milk-water
mixture changes with distance from the torch. Near the torch, it’s a different
color and at the other end, it’s different. He found that as he added more
drops of milk in the container, the colours became darker.
(a) (i) What color does he observe at the end that is near the torch?
(ii) What color does he observe at the other end of the container?State the
reason for each case