WONDER #2393: What Keeps Tunnels From Falling Down?

Question 1 of 3

_____________ engineers work hard to build safe, strong tunnels.

1. Chemical
2. Civil
3. Biomedical
4. Aerospace

Question 2 of 3

Which of these is NOT taken into account before digging for a tunnel, according to this Wonder?

1. Soil and rock types
2. Water patterns
3. Fault lines
4. Airplane traffic

Question 3 of 3

This Wonder was mostly about...

1. famous tunnels and why they don’t fall down.
2. how to become a civil engineer.
3. why London Bridge has fallen down so many times.
4. what makes the London Underground the best transportation system.

Check your answers online at https://www.wonderopolis.org/wonder/what-keeps-tunnels-from-falling-down.