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?
Question 2 of 3
What new statistical method combines astronomical theory with geological observation?
Question 3 of 3
The Moon is slowly moving away from Earth at a rate of how far each year?
- 1.5 inches
- 1.5 feet
- 15 yards
- 1.5 miles
Check your answers online at https://wonderopolis.org/wonder/are-days-on-earth-getting-longer.