An EVS teacher demonstrates an experiment in class in which an egg sinks in a tumbler with water, but floats upon adding salt to the water. Which of the following is the most appropriate explanation she can give to students' enquiry?
1
Allow each student to conclude on their own by adding different items in water.
2
The egg floats due to density of water.
3
You will learn the correct reason in higher classes.
4
Conduct and observe the experiment with different amounts of salt.