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Tiny Center in a Vast Arena

Open to everyone until Thursday, October 1

To keep it, print it while it is open.

An atom has a tiny, dense center called the nucleus. Its electrons are much farther away, so most of the atom is open space.

In the picture

  1. Central bead: the atom’s tiny, dense nucleus
  2. Outer glowing speck: an electron far from the center
  3. Wide floor span: the large distance between the center bead and the outer specks

Examples

  • A football stadium with a pea at the center and a few insects near the outer wall.
  • A large cathedral with a grain of sand in the middle and tiny moths near the far doors.

Carry on in the app

Three questions on this lesson, to check the idea stuck. Free in the app while the lesson is in the free week.

At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.

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Physics, Age 14