Ways of Working It Out: teacher key

Ancient Greece, grade 8 edition, written for 8th grade. Greek thinkers measured the Earth, tested gold and watched the sky. See how they worked things out.

Read the book. Print this page for the key.

Questions and answers

1. What did Eratosthenes measure?
   • The height of a temple
   • The size of the Earth (answer)
   • The age of a crown
2. What did Archimedes invent?
   • A mask
   • A coin
   • A screw for drawing water upward (answer)
3. Who first proposed a Sun-centered model of the universe?
   • Aristarchus (answer)
   • Homer
   • Hippocrates
4. What did Hippocrates stress?
   • Magic spells
   • Long speeches
   • Careful observation of the patient (answer)
5. Why did Eratosthenes need a pole and a well?
   • To measure the sea
   • To compare shadows at two cities (answer)
   • To tell time at night
6. What does the word circumference mean here?
   • The distance around the Earth (answer)
   • The height of a pole
   • The depth of a well

Words

• philosopher: lover of wisdom
• circumference: distance around
• physician: doctor
• Eureka: I found it
• Lyceum: Aristotle's school