1. Gamma Rays
- It lies at the other end of the EM spectrum.
- It is emitted by stars and some radioactive substances
(nuclear reaction).
- They can only be blocked with lead and thick concrete
2. PROPERTIES OF THE
GAMMA RAYS:
- It has the shortest wavelength
1X10^-12 m to 1X10^-14 m
- It has the highest frequency
1X10^19 Hz to 1X21^22 Hz
- It has the highest amount of energy
- It has an equivalent size to an atomic
nuclei
3. USES OF GAMMA RAYS:
- Sterilize medical equipment
- Sterilize food (irradiated food) and
Drinking water
- Used as tracers in medicine
- Radio Therapy- In oncology, to kill
cancerous cells
- Gamma-Ray Astronomy
- Nuclear Industry
4. POSITIVE EFFECTS TO LIVING THINGS
- kill cancer cells and shrink tumors
- To have clean and safe to eat foods
NEGATIVE EFFECTS TO LIVING THINGS
- It can destroy living cells (DNA)
- It can produce mutations.
- It can cause cancer.
NEGATIVE EFFECT TO ENVIRONTMENT
- damages on growth and reproduction in various
organisms such as zooplankton, benthos, and fish in
aquatic ecosystems.
