Question

Hurren re approximately 7.5 % 10^18 grains of send Earth .
There are approximately 7 10^27
atoms in an average
human body. Are there more grains or sand on Earth or atoms in an average human body? How do you know?

Answer 1

Ответ:

Пошаговое объяснение:

Okay, let's break this down step-by-step:

There are approximately 7.5 x 10^18 grains of sand on Earth

There are approximately 7 x 10^27 atoms in an average human body

To compare these numbers:

7.5 x 10^18 = 7,500,000,000,000,000,000

7 x 10^27 = 7,000,000,000,000,000,000,000,000,000,000,000

The number of atoms in an average human body (7 x 10^27) is much larger than the number of grains of sand on Earth (7.5 x 10^18).

I know this because:

The exponent 27 for the number of atoms is larger than the exponent 18 for the number of sand grains

When I wrote out the full numbers, it was clear the number of atoms (with 27 zeros) was much larger than the number of sand grains (with 18 zeros)

So in conclusion, there are more atoms in an average human body than grains of sand on Earth. The huge difference in the exponents shows there are many more orders of magnitude of atoms than sand grains.