Final Electronics Presentation

Electronics Tech 2 (Soldering)

Soldering is the process of joining 2 metals together to make an electrical connection.
Here is my first effort:

Electronics Tech

Need: A torch and spare batteries for my survival kit.

Conceptual statement; I am designing and making  an emergency light for my survival kit. The website also says that we need 3 litres of water per person per day, my family will need 36 litres of water.

My Bag Tag

Week 7 Reflection

I have finished my static image. I am really pleased that I got into the Mathletics team. This week I have helped Mia and Lucy, Esther, Hayley and Lilli at the playground playing their game. I have wotked really hard on my Static image both mine and for my reading group. My goal for next week is to get 5 of 5 on the friday maths problem solving. I have finished 5 of 8 books on my pizza wheel.

My Mamma Mia Pizza Evaluation

Dolphin Turangawaewae Writing

Time is slipping away to see some of New Zealand’s dolphins, is there a link between their size and their population can we save them before it’s too late? Dolphins are amazing and they are some of the smartest mammals that currently walk or swim the earth. There have been many stories of dolphins helping humans, such as Pelorus Jack who guided sailors through the treacherous straits off the coast of Tasmania. There is also another myth of a dolphin named Flipper who continuously rescued 2 accident-prone little boys. However dolphins are very vulnerable around sharks because there is no secret that they are mortal enemies. The reason why dolphins are so smart is because of their echolocation which is a system similar to radar and they send out waves to see how they bounce off things.

Bottlenose Dolphins

Bottlenose dolphins are approximately 150-454 kilograms in weight. They measure at 2-4m in length when they are adults but are born at just 85cm. The Bottlenose dolphin is found around the coast on both New Zealand Islands. They are neither endangered or rare because there are 79,830 all over the world and 600 of them currently inhabit New Zealand waters. They are commonly found swimming alongside the bow of a boat and they can reach a speed of  35km per hour. They have a relatively long lifespan of 40 years. Their diet consists of many forage fish. The scientific name for Bottlenose dolphin is Tursiops.

Hector’s Dolphin

Hector’s dolphins weigh 40-60kg as an adult. They are one of the smallest dolphins with a length of just 1.2-1.6 metres. The Hector’s dolphin is very endangered and rare because there are less than 8,000 in the world. A Hector’s dolphin lifespan is only half of a Bottlenose dolphin's life with 20 years! The diet of a Hector’s dolphin consists mostly of Yellow-eyed mullet, Squid, Flatfish and Red cod. The scientific name for Hector’s dolphin is Cephalorhynchus hectori. The shape of a Hector’s dolphin's dorsal fin is extremely odd as it looks similar to a Mickey Mouse ear.

Maui Dolphins

Maui dolphins are very light and females weigh 50kg maximum and the males are even lighter. They are quite short aswell only measuring a maximum of 1.7m but are born at just 50-60cm long. The maui dolphin is the most critically endangered species of dolphin with only 43-47 of them left. They have the same lifespan of a Hector’s dolphin with only 20 years of possible life.Maui dolphins feed on small fish squid, and ocean floor-dwelling species such as flatfish and cod. The scientific name for Maui’s dolphin is Cephalorhynchus hectori maui. Maui dolphins communicate in high frequency clicks rather than whistles like other dolphins. They can be found of the upper west coast of the North Island in water 20m deep or even more shallow. They generally swim in groups of 3-4.

The Short Beaked Common Dolphin

The Short-Beaked common dolphin can weigh up to 200 kilograms and can grow to 2.74 metres long. They are very common with an estimated population of 3 million. The Short-beaked common dolphin has a relatively short life span with only 22 years of possible life. The food they consume is made up of squid and small fish (generally in large schools). The scientific name for a Short Beaked Common Dolphin is Delphinus Delphis.

Dusky Dolphin

A female Dusky dolphin has a maximum length of 1.93m, while a male Dusky dolphin has a maximum length of 2.11m. The Dusky dolphin is not exactly rare with a population of 12,000- 20,000 left in New Zealand. A Dusky dolphin can live for 30 or more years. The Dusky dolphin has a diet made up of sardines, anchovies and squid. The scientific name for a Dusky Dolphin is Lagenorhynchus Obscurus. A Dusky dolphins pod can have over 1,000 dolphins in it.

Orca

A female adult Orca weighs between 1400-2700 kg but an adult male Orca can weigh between 3600-5400 kg. The length of a male Orca is 6-8m and the length of a female Orca is 5-7m. The exact population of Orcas is unknown we do know that there are at least 50,000 in the world. The female Orca can live for up to 29 years but a male Orca will only live for 17 years.  The diet of an Orca consists of seabirds, squid, octopuses, sea turtles, sharks, manta rays and fish. They also eat most marine mammals such as seals and dugongs. The scientific name for Orca or Killer Whale is Orcinus Orca.

Fraser’s Dolphin

An adult Fraser’s dolphin can reach a weight of 210 kg. The full length of a Fraser’s dolphin is between 2-2.7 metres. The population of The Fraser’s dolphin is approximately 308,700 but the exact number is near impossible to calculate. The lifespan of a Fraser’s dolphin is 18 or more years. The diet of a Fraser’s dolphin is made up of squid, small fish and shrimp. The scientific name for a Fraser’s dolphin is Lagenodelphis Hosei.

Risso’s Dolphin

An adult Risso’s dolphins weight can be up to 500 kg.the maximum length for a Risso’s dolphin is 4 m. The exact population of the Risso’s dolphin is unknown but they have been seen in the following areas:

The Risso’s dolphin can live for up to 30 years in the wild. The diet of a Risso’s dolphin consists of squid, crustaceans and cuttlefish. The scientific name for a Risso’s dolphin is Grampus Griseus.

Rough-Toothed Dolphin

The average length for a Rough-Toothed dolphin is between 2.1-2.8m. The average weight for a Rough-Toothed dolphin is between 90-160kg. The approximate population of Rough-Toothed dolphins is 150,000. The average lifespan of a Rough-Toothed dolphin is 25-35 years. The main diet of a Rough-Toothed dolphin consists of small school fish but they also consume squid and octopus when it is available. The scientific name for Rough-Toothed dolphin is Steno Bredanensis. The Rough-Toothed dolphin prefers to steer clear of humans but are more social with other dolphins. They are also commonly found in pods of 10-20 dolphins.

The Striped Dolphin

The maximum length of a Striped dolphin is 1.6m. The average length of a Striped dolphin is 2.6 metres but they are born at just 10kg. The Striped dolphin is rather abundant with an approximate population of 2,000,000. This dolphin has a very long lifespan for a dolphin with a possible lifespan of 55-60 years. The Striped dolphins diet is made of lanternfish and cod with a little bit of squid. The scientific name for Striped dolphin is Stenella Coeruleoalba. The name Striped dolphin comes from the distinctive stripes along the side of the dolphin.

The Hourglass Dolphin

The Hourglass dolphin has a maximum length of 1.9m the Hourglass dolphin also has an average adult weight of 94 kg.The estimated population is around 144,300 dolphins. The Hourglass dolphin can live for up to 27 years in the wild. They appear in the southern ocean and prefer water between 3 and 13 degrees celsius. The Hourglass dolphins diet has in it squid, fish and crustaceans. The scientific name for Hourglass dolphin is Lagenorhynchus Cruciger.

Spectacled Porpoise

The maximum length for the Spectacled Porpoise is 115 kg. The maximum length for a Spectacled porpoise is 2.25m. The population of Spectacled porpoises is unknown but they have been seen in groups of up to 5. The lifespan of a Spectacled porpoise is unknown due to the fact that Spectacled porpoises generally avoid boats and humans. The diet of a Spectacled porpoise is made up of fish and squid. The scientific name for Spectacled Porpoise is Phocoena Dioptrica.

Southern Right Whale Dolphin

The maximum weight for a Southern Right Whale Dolphin is 100kg. The Southern Right Whale dolphin is surprisingly classed as a dolphin despite the name Southern Right WHALE Dolphin. The maximum length for a Southern Right Whale dolphin is 3 metres. The population of the Southern Right Whale dolphin is unknown. The lifespan of a Southern Right Whale dolphin has a huge lifespan of 50-100 years. The diet of a Southern Right Whale dolphin consists of squid, fish and octopus. The scientific name for Southern Right Whale dolphin is Lissodelphis Peronii.

Summary

The heaviest dolphin is the Orca with a maximum weight of 5,400kg

The longest dolphin is the Orca with a maximum length of 8m

The lightest dolphin is the Maui’s with a maximum weight of 50kg

The shortest dolphin is the Hector’s with a maximum length of 1.6m

The dolphin that can live the longest is the Southern Right Whale dolphin with a lifespan of a possible 100 years

The dolphin that lives for the least amount of time is the the Hector’s and Maui’s with a maximum lifespan of 20 years

The least endangered dolphin is the Short Beaked Common dolphin with a population of 3,000,000

The most endangered dolphin is the Maui dolphin with a population of 43-47