Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

Radioactivity

nuclear decay
by

sara melancen

on 4 February 2014

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Radioactivity

Nuclear decay within the nucleus of an atom!!
Nuclear Radiation/Radioactivity
What is Radioactivity?
A process by which an unstable nucleus emits one or more particles or energy in the form of electromagnetic radiation.
Nuclear radiation
Alpha particles
Beta particles
Gamma rays
Scientists that discovered this idea of radioactivity!!!
Nuclear Fission and Fusion
The charged particles or energy emitted by the unstable nucleus!!!
Alpha Particles
Positively charged
Most massive particle
Don't travel far through matter
made of protons and neutrons
Beta Particles
made of 1 electron
Negatively charged
Smaller in mass
Moves faster through matter
Gamma Ray
electromagnetic energy
NO charge
more energy than light waves
Moves easily through matter
Michael Faraday
Marie and Pierre Curie
Henri Becquerel
Otto Hahn
Nuclear Decay
half- life
X-ray
alpha particles
electrochemistry
waves
electricity
photographs
gamma rays
ions
nucleus
Wavelength
Frequency
Electromagnetic Spectrum
Long Wavelength
Short wavelength
The # of wavelengths within a 1 second interval.
Radiation
Transfer thermal energy by electromagnetic waves.
This happens in ALL directions!!
He 4
Unstable nuclei emit the alpha and beta particles.
The # of protons and neutrons change.
The parent material changes into daughter material.
half-life
The heavier nucleus changes into a lighter nucleus.
Create a half- life
Ways to detect radioactivity
Cloud chamber
Bubble chamber
Electroscope
Geiger counter
(tools)
NOT all radiation is harmful!!
Fission: start with a heavy nucleus end with lighter nuclei.
Fusion: start with lighter nuclei end with a heavier nucleus.
Fission
Fusion
Fissure
Splitting
separating
Fusing
Welding
combining
3 white papers
2 colored pencils
You need:
Parent material
Daughter material
Risk and Benefits of Radiation
Read the handout with a partner.
Answer questions 1-5 on the last page.
Write a conclusion about what YOU think about radiation.
Partners
Individual work
Full transcript