Wonder #2821: How Hot Is the Center of the Earth?
Question 1 of 3
What is the deepest hole that humans have ever drilled into the Earth’s surface, according to this Wonder?
- 3.1 miles (5 kilometers)
- 7.6 miles (12 km)
- 43.5 miles (70 km)
- 18.6 miles (30 km)
Question 2 of 3
According to this Wonder, how do experts learn about the Earth’s layers?
- by examining rocks and minerals extracted from the crust
- by studying seismic waves caused by earthquakes and how they travel through the Earth
- by drilling very deep into the Earth’s layers and sending scientists down into the hole to analyze the findings
- by reviewing satellite images of the slowly changing shape of the planet
Question 3 of 3
Which of the following is NOT one of the Earth’s four layers?
- inner core
- magnetic field
Check your answers online at https://wonderopolis.org/index.php/wonder/How-Hot-Is-the-Center-of-the-Earth.