Understanding Parts Per Million

The video tutorial explains the scientific concept of 'parts per million' (ppm) as a unit of measurement used to describe the concentration of one substance in a million units of another. It highlights the importance of understanding ppm, especially when small amounts can have significant effects, such as carbon monoxide levels in the air. The tutorial provides nine creative examples to help visualize what one part per million looks like, using relatable analogies like piano keys, sugar granules, and words in a book. These examples aim to make the abstract concept of ppm more tangible and easier to grasp.

What does 'one part per million' measure in scientific terms?

• The number of units of one substance per one hundred units of another

• The number of units of one substance per ten units of another

• The number of units of one substance per one thousand units of another

• The number of units of one substance per one million units of another

Which of the following is an example of one part per million?

• One granule of sugar among 273 sugar cubes

• One granule of sugar among 50 sugar cubes

• One granule of sugar among 100 sugar cubes

• One granule of sugar among 500 sugar cubes

How many seconds in eleven and a half days represent one part per million?

• One thousand seconds

• One hundred seconds

• Ten seconds

• One second

In the painting 'A Sunday Afternoon on the Island of La Grande Jatte,' how many dots represent one part per million?

• Four dots

• Ten dots

• One dot

• Twenty dots

How many drops of ink in a 60-gallon bathtub would be one part per million?

• Seven drops

• Ten drops

• One drop

• Twenty drops

In the Harry Potter series, which word on page 221 of 'The Prisoner of Azkaban' is slightly less than one part per million?

• Hippogriff

• Azkaban

• Dementor

• Quidditch

How many bricks in the Empire State Building would represent one part per million?

• One thousand bricks

• One hundred bricks

• Ten bricks

• One brick

If 100 people worked together to animate a video, how many hairs would represent one part per million?

• Ten hairs

• One hundred hairs

• One hair

• One thousand hairs