1.Ans:

Let, the white dots on the balloon's surface represent galaxies

To demonstrate the Big Bang theory using a balloon, you can follow these steps:

i. Inflate the Balloon: Begin with the deflated balloon, which represents the universe at the moment of the Big Bang i.e. hot, dense, and compact. As we inflate the balloon, it symbolizes the rapid expansion of the universe that occurred after the Big Bang.

ii. Observe the Surface: The small dots on its surface to represent galaxies. As the balloon continues to inflate, we observe how the dots move away from each other. This movement illustrates how galaxies in the universe are moving apart as the universe expands.

This balloon demonstration visually represents the concept of the Big Bang theory

2.Ans:

 Distance and Speed: We can emphasize that the farther apart two dots are, the faster they appear to move away from each other, mirroring Hubble's observation. This illustrates Hubble's Law, where the recessional velocity of galaxies increases with their distance, supporting the conclusion that the universe is expanding uniformly.

It effectively supports Hubble's study by showing the relationship between distance and the rate of expansion, highlighting how the universe has evolved from a singularity to its current state.