Visit www.pbs.org
Search for tunnels.
Go to tunnel basics.
Answer the questions below using website and internet.
Tunnels
Who began tunnels?
What is the definition of boring?
What were tunnels mainly used for back in the day?
Then they were used for what?
What do engineers have to investigate before they tunnel?
What are the three basic steps of tunneling?
What do they have to build with soft tunnels?
They have move from dynamite to….? Why?
What forces act on…(include illustrations!)
SOFT GROUND TUNNELS?
ROCK TUNNELS?
UNDERWATER TUNNELS?
Try the tunnel challenge.
Write three things you learned from doing the tunnel challenge.