How Small is an Atom

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A2
sciencevideo

How Small is an Atom

Title

How Small Is An Atom?

Reading Text

Have you ever wondered what things are made of? Everything in the universe is made of tiny particles called atoms. Atoms are very, very small. A single human hair is much wider than an atom. In fact, one hair is as thick as 500,000 atoms! An atom has a center called the core. Inside the core, there are protons and neutrons. There are also electrons. The electrons move around the core very fast. Here is a surprise: Atoms are mostly empty space. If we remove the empty space, all the people in the world could fit inside a teaspoon. It is hard to imagine, but it is true!

Activities

Vocabulary

Definitions:
  • Text: Everything that exists, including stars and space.
  • Text: Extremely small.
  • Text: The middle point of something.
  • Text: Moving with high speed.
  • Text: Having nothing inside.
  • Text: To be the right size to go into something.
Items:
  • Label: Universe
    Answer: A
  • Label: Tiny
    Answer: B
  • Label: Center
    Answer: C
  • Label: Fast
    Answer: D
  • Label: Empty
    Answer: E
  • Label: Fit
    Answer: F
Fill In The Blanks:
  • Before: Everything in the
    After: is made of atoms.
    Answer: universe
  • Before: An atom is a very
    After: particle.
    Answer: tiny
  • Before: The core is in the
    After: of the atom.
    Answer: center
  • Before: Electrons move very
    After: around the core.
    Answer: fast
  • Before: Atoms are mostly
    After: space.
    Answer: empty
Scrambled:
  • Text: To be generated
    Answer: Everything is made of atoms.
  • Text: To be generated
    Answer: Atoms are very small things.
  • Text: To be generated
    Answer: The center is called the core.
  • Text: To be generated
    Answer: Electrons move around the center.
  • Text: To be generated
    Answer: Atoms are mostly empty space.

Comprehension

Questions:
  • Text: An atom is bigger than a human hair.
    Answer: false
  • Text: Protons are found in the center of the atom.
    Answer: true
  • Text: Electrons stand still inside the atom.
    Answer: false
  • Text: Atoms have a lot of empty space inside.
    Answer: true
  • Text: All humans could fit in a teaspoon if atoms were solid.
    Answer: true

Written Expression

Questions:
  • Text: What are the three parts of an atom?
  • Text: Why is it difficult to see an atom?
Examples:

Examples:

  • The three parts are protons, neutrons, and electrons.
  • It is difficult because atoms are very tiny.

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