WorksheetsSalmon An Upstream Battle
Total questions: 10
Worksheet time: 5mins
The name "salmon" means:
Flying Fish
Jumping Fish
Spirit Fish
Brave Fish
Which of the following MUST happen when salmon prepare for their journey?
Change colors from Blue/Silver to Red/Green
Grow bigger teeth
Grow a longer snout
Change from saltwater to freshwater
All of the above.
What happens to salmon when they complete their spawning journey?
Return to the sea
Swim further upstream
Lay their eggs and die
Scientists believe that salmon can smell and taste different waters.
False
Only Trout
True
Only Atlantic Salmon
What was built in order for salmon to get past the Hells Gate waterway?
A special underwater tunnel
Fish ladders
A new waterway that bypassed Hells Gate
A special crane and net to lift them up
Salmon must what during their stay in the ocean before traveling upstream?
Grow bigger teeth
Fatten up
Change colors
Grow bigger fins
Which of the following is NOT an obstacle or problem for salmon?
Logging
Pollution
Dams
Bridges
Which of the following is NOT a major obstacle for the salmon at the beginning of their journey?
Fishing Trawlers
Orcas
Sea Lions
Bears
Which is the first major predator identified in the video that the salmon faced in the Pacific Ocean?
Bears
Eagles
Orcas
sharks
The Hells Gate waterway became more dangerous for salmon because:
Railroad companies blasted rock into the waterway
Dams were built for electricity
Logging companies dumped more logs into the water
More people started using the waterway for fun activities
