Understanding Density and Buoyancy

What is the main question posed by the teacher in the introduction?

• Why do some objects float while others sink?

• How does temperature affect water density?

• What is the chemical composition of salt?

• Why do eggs have different sizes?

What materials are used in the experiment to test the hypothesis?

• Fresh water, salt, glass, eggs, and spoon

• Oil, vinegar, glass, and eggs

• Fresh water, sugar, glass, and eggs

• Sand, salt, glass, and spoon

What happens to the egg when placed in fresh water?

• It changes color

• It dissolves in the water

• It sinks to the bottom

• It floats to the top

Why does the egg float in salt water?

• The egg absorbs the salt

• The egg becomes lighter

• The salt water has a higher density than the egg

• The temperature of the water increases

What conclusion is drawn from the experiment?

• The density of the liquid determines if an object will sink or float

• All objects float in salt water

• Eggs are denser than fresh water

• Salt water is always heavier than fresh water