5. Define density. How is it related to floating
7. What is the difference between transparent and opaque objects? Give two example
6. What is the difference between miscible and immiscible liquids:
HOTS QUESTIONS: Think and answer.
1. You want to take a tumbler to a picnic. You want to crush and throw away the tur
use. Name two materials from which such a tumbler can be made.
break apart? How can you say
example
Answers
Answer:
5) The density of an object determines whether it will float or sink in another substance. An object will float if it is less dense than the liquid it is placed in. An object will sink if it is more dense than the liquid it is placed in.
6) Miscible Liquid can be easily dissolved in any other liquids, but Immiscible Liquid do not dissolve in other.
The materials with which the tumbler should be made in order to crush it after use are paper, plastic and aluminium.
Paper cups or tumblers that are made from papers that can be recycled are the best for use and throw purposes.
Paper cups are mostly lined with a waxy substance to prevent leakage.
7) Transparent objects are the objects which allow light to pass through them.Eg:glass,water etc,whearas opaque objects are the objects which do not light to pass through them. Example:wood,steel etc. ... Opaque: A substance that does not allow a part of light also to pass through it