Exploring Small Scales

The video explores the concept of scale, starting from familiar units like meters and millimeters, and delving into smaller scales such as micrometers, nanometers, and angstroms. It examines various objects at these scales, including bees, dust mites, human hair, cells, bacteria, viruses, DNA, and atoms. The video highlights the vastness of empty space within atoms and introduces quantum concepts, providing a comprehensive understanding of the microscopic world.

What is the relationship between a micrometer and a meter?

• A micrometer is one trillionth of a meter.

• A micrometer is one billionth of a meter.

• A micrometer is one millionth of a meter.

• A micrometer is one thousandth of a meter.

How long is the average bee compared to an adult human?

• One tenth the length

• One hundredth the length

• One millionth the length

• One thousandth the length

What is the approximate diameter of human hair in micrometers?

• 200 micrometers

• 100 micrometers

• 50 micrometers

• 10 micrometers

Which of the following is in the micrometer range?

• A red blood cell

• A virus

• A water molecule

• A hydrogen atom

What is the size range of most bacteria?

• 100 to 1000 micrometers

• 10 to 100 micrometers

• 1 to 10 micrometers

• 1 to 10 nanometers

What is the approximate width of a DNA double helix?

• 20 nanometers

• 2 nanometers

• 200 nanometers

• 0.2 nanometers

How many DNA double helices can fit side by side in a millimeter?

• 500

• 5,000

• 50,000

• 500,000

What is the size of a water molecule in angstroms?

• 2 angstroms

• 100 angstroms

• 10 angstroms

• 20 angstroms

What is the approximate diameter of a hydrogen atom?

• 100 angstroms

• 0.1 angstrom

• 1 angstrom

• 10 angstroms

How does the size of an electron compare to the size of an atom?

• An electron is about the same size as an atom.

• An electron is exactly half the size of an atom.

• An electron is much larger than an atom.

• An electron is much smaller than an atom.