- I can make a film canister float sink, float, and suspend
- I keep working until the task is complete.
Agenda
- Warm-up: PRETTY PICTURE FRIDAY (2min)
- Why do big boats float?
- Splitting the catch. Sometimes it’s the fishing boats that look for the killer whales and humpbacks, hoping to locate the shoals of herring that migrate to these Arctic Norwegian waters. But in recent winters, the whales have also started to follow the boats. Here a large male killer whale feeds on herring that have been squeezed out of the boat’s closing fishing net. He has learnt the sound that this type of boat makes when it retrieves its gear and homed in on it. The relationship would seem to be a win-win one, but not always. Whales sometimes try to steal the fish, causing damage to the gear, and they can also become entangled in the nets, sometimes fatally, especially in the case of humpbacks. The search for solutions is under-way, including better systems for releasing any whales that get trapped. #© Audun Rikardsen / Wildlife Photographer of the Year
- float, sink, and suspend
Relevant reading:
- CK-12 Properties of Matter
Homework:
- none
No comments:
Post a Comment