Bits, Chips and Switches: teacher key

How Computers Work, grade 3 edition, written for 3rd grade. Follow a computer from its parts to the tiny switches inside its chips.

Read the book. Print this page for the key.

Questions and answers

What happens to RAM when the power goes off?
- It loses what it holds (answer)
- It saves files for a year
- It becomes a drive
What does each extra bit do to the number of patterns?
- Erases it
- Doubles it (answer)
- Halves it
What is a picture on a screen made of?
- Wax
- Steam
- Pixels (answer)
Who built the first semiconductor amplifier in 1947?
- Bardeen and Brattain (answer)
- A programmer
- An Apollo crew
What can transistors work as in computers?
- Pixels
- Switches (answer)
- Paper