# data[].attributes.body
1) Ionizing Radiation - Lots of energy and changes to living cells causing mutation.

2) Non-Ionizing Radiation - Not enough energy to cause ionization, harms from radiation.

3) Tested on tuna or other fish.

4) Half Life - The rate at which a radionuclide decays to half its original atoms and is measured as time, ranging from mere seconds - millions of years.

# data[].attributes.body
1) March 2011: Accident at the Fukushiman Daiichi nuclear power plant.

2) Many of the exposed marine organisms migrated and swim across the North Pacific to the West.

3) For public health the levels of radiation are very low and far below levels that are considered cause for concern.

4) Radiation is energy in the form of waves or energized particles.

# data[].attributes.body
-there are many exposed marine organisms who are still in japan

-these species are highly migratory

-small bluefin has 134Cs and large fish had 137 Cs

-radiation exposure comes from human made sources

# data[].attributes.body
- Great Tohoku earthquake was an accident releasing radionuclides cesium into ocean

- Many exposed marine organisms remain around Japan

Two Types of Radiation

Ionizing radiation: has so much energy

Non-ionizing radiation: does not have enough energy

- Radioactive materials impact humans this is because of the radiation that depends on the exposure, either chronic(long period of time) or acute (short-term)

- Radiation exposure has always been a natural part of our environment, with sources in the soil, water, and air.

# data[].attributes.headline
Key Ideas-  Juan Marquez and Jesus Macias

# data[].attributes.subject
Key Ideas-  Juan Marquez and Jesus Macias

# data[].attributes.body
-Half life: rate at which a radionuclide decays to half it's original atoms measured in time

-Radiocecium isotopes help indicate if they recently migrated from Japan.

-Radiation can knock electrons and change DNA in humans, but depends on exposure, size, life of the particle, etc.

# data[].attributes.body
Migratory fish swam to the west coast of North America. Average annual dose is 620 millirem (or 6.2 millisieverts).

Radioactive materials that release energy in the form of ionizing radiation may cause damage to living cells by changing the state of atoms inside genetic material, in turn causing mutations to DNA.

# data[].attributes.body
Half life - Cs 137 = 0.34 CS 134 = 2.07

Two Types of Radiation ----->

Ionizing radiation- so much energy, knock electrons out of atoms, can change living cells and cause mutations

Non-Ionization Radiation - does not have enough energy to cause ionization (Does not have enough energy to cause ionization

Ex. Radio waves, microwaves, visible light

Human Made Sources: Mining, Power Generation, Nuclear Medicine, Military Applications, Consumer Products.

# data[].attributes.headline
Alison Montoya, Celeste Hernandez, and Sarah Mendoza

# data[].attributes.subject
Alison Montoya, Celeste Hernandez, and Sarah Mendoza

# data[].attributes.body
Accident released the radioactive cesium ¹³⁴Cs and ¹³⁷Cs into the ocean, exposing marine life to radioactive materials

Smaller bluefin fish had ¹³⁴Cs & larger older fish had ¹³⁷Cs

Background radiation refers to radiation that is always present in the environment

# data[].attributes.body
- 134 C 137 C used -> indicating migratory pathways

- Ionizing radiation = Have alot of energy enough to create an ion or unbalance atoms that can change living cells or cause mutations

- Half-life= rate at which a radionuclide decays to half it''s original atoms

- Radioactive decay= process in which radionuclides release energy

# data[].attributes.body
There is still radio active material in the sea

The Pacific Bluefin tuna albacore tuna have been tested to have 134Cs and 137Cs

Radiation can cause mutations to the DNA

Most of the fish that have 134Cs and 137Cs are known to come from Japan

# data[].attributes.body
Two types of radiation: lonizing and non-ionizing ration

Radionuclides may transform into different elements completely

Radiation has always been a natural part of the environment

# data[].attributes.body
1) In 2011, the earthquake and tsunami damaged the Fukushima nuclear plant, releasing radioactive cesium isotopes into the Pacific Ocean

2) Migratory species like Pacific bluefin and albacore tuna traveled from Japan to the U.S. West Coast, carrying small amounts of radioactive elements

3) Tests found radiation in tuna, but the levels were far below anything considered harmful to humans