Sunrise, Sunset and Beyond: teacher key

Day and Night, grade 3 edition, written for 3rd grade. Day and night come from a spinning Earth. Other planets turn too, and some have very strange days.

Read the book. Print this page for the key.

Questions and answers

1. What gives us day and night?
   • The Earth spins (answer)
   • The Sun runs
   • Mars turns
2. What does diurnal mean?
   • Orange and red
   • Very cold
   • Active in the daytime (answer)
3. On which planet would the Sun rise in the west?
   • Jupiter
   • Venus (answer)
   • Earth
4. Why is Mercury so cold at night?
   • It spins fastest
   • It is far from the Sun
   • It has almost no air to hold the heat (answer)
5. Which planet has decades of darkness at its poles?
   • Uranus (answer)
   • Mars
   • Mercury

Words

• diurnal: active by day
• twilight: evening glow
• scatters: bounces around