WONDER #2225: Are Days on Earth Getting Longer?

Question 1 of 3

Approximately 1.4 billion years ago, a day on Earth was how many hours long?

  1. 12
  2. 18
  3. 20
  4. 24

Question 2 of 3

What new statistical method combines astronomical theory with geological observation?

  1. geostronomy
  2. gastronomy
  3. astrochronology
  4. astrologicology

Question 3 of 3

The Moon is slowly moving away from Earth at a rate of how far each year?

  1. 1.5 inches
  2. 1.5 feet
  3. 15 yards
  4. 1.5 miles

Check your answers online at https://wonderopolis.org/index.php/wonder/are-days-on-earth-getting-longer.