Biomass and Population Comparisons

The video tutorial covers Math 8 Unit 7 Lesson 14, focusing on multiplying, dividing, and estimating with scientific notation. It includes activities on biomass, solar system calculations, and professions and salaries, all using scientific notation. The lesson emphasizes practice and understanding of scientific notation in real-world contexts.

What is the result of multiplying 10^5 by 10^4?

• 10^1

• 10^8

• 10^20

• 10^9

How many times more nurses are there than doctors in the United States?

• 5 times

• 10 times

• 3 times

• 2 times

What is the estimated total income of all doctors in the United States?

• $140 billion

• $14 billion

• $1.4 billion

• $140 million

How many Earths can fit side by side across the diameter of the Sun?

• 10

• 100

• 1,000

• 10,000

What is the estimated total mass of all humans compared to all ants?

• Humans are 3 times more massive

• Ants are 10 times more massive

• Ants are 3 times more massive

• Humans and ants have the same mass

How many times further is Neptune from Earth compared to Venus?

• 10 times

• 50 times

• 100 times

• 1,000 times

Which creature is the least numerous according to the biomass activity?

• Blue Whales

• Ants

• Humans

• Bacteria

How many times more massive is a human compared to bacteria?

• 100 trillion times

• 1 trillion times

• 62 trillion times

• 10 trillion times

How many bucket loads would it take to empty the world's oceans?

• 10^15

• 10^19

• 10^10

• 10^5

What is the slope of the line passing through the points (-8.5, 11) and (5, -2.5)?

• 1

• -1

• 2

• 0