What is your observation in the following?
1 light rays are obstructed by an opaque object
2 salt is added to cold and warm water
3 you have observed a picture through a butter paper
4 olive oil is added to water
5 water is kept in the freezer
6 sand is added into the beaker containing water
Answers
Answer:
1 Shadows are formed
5 It will form solid that is ice
1. A shadow is formed when the path of light rays gets obstructed by an opaque body. A shadow is a dark outline of an object.
2. Salt dissolves better in warmer water than in colder water.
This is because the water molecules are moving faster and can keep the salt ions from joining together by pulling on them.
4. If you put oil and water in a container, the water molecules will bunch up together and the oil molecules will bunch up together, forming two distinct layers.
5. When water is kept in a deep freezer, it gets cooled and change into ice at 0°C ice.
6. When water is added to sand, by the absorption effect, a thin film of water is formed around the sand particles. The film exerts surface tension on particles making them move apart. This leads to increase in volume because there is no direct contact between particles.