I see ,I think ,I wonder

1. I see          :A big crack in the earth's crust 
2. I think       : there was a earthquake
3. I wonder   :if people were killed

1. I see        :A big crack again
2. I think     :  the  man was exploring 
3. I wonder :if man was exploring to see the end of the big crack

1. I see          :a weird rock
2. I think       :it was made by water
3. I wonder   :if it will fall over 

1. I see        :a volcano
2. I think     :it was small
3. I wonder :if it was a firework

1. I see        :lava tuching water
2. I think     :it is going to make obsidian
3. I wonder : 

1. I see        :the wadi
2. I think     :it was a dry river
3. I wonder :what wadi means