nuclear radiation n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Nuclear Radiation PowerPoint Presentation
Download Presentation
Nuclear Radiation

Loading in 2 Seconds...

play fullscreen
1 / 9

Nuclear Radiation - PowerPoint PPT Presentation


  • 133 Views
  • Uploaded on

Nuclear Radiation. Reference chapter: 22. Some nuclei are unstable. They can change into isotopes or different elements. Types of nuclear radiation : alpha particles, beta-particles, gamma rays. Heading Vocabulary Important Facts. Alpha Particles (a).

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Nuclear Radiation' - wyome


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
nuclear radiation
Nuclear Radiation

Reference chapter: 22

  • Some nuclei are unstable.
  • They can change into isotopes or different elements.
  • Types of nuclear radiation: alpha particles, beta-particles, gamma rays

Heading

Vocabulary

Important Facts

alpha particles a
Alpha Particles (a)
  • Alpha particlesare made of 2 protons and 2 neutrons.
  • (+)positively charged
  • Massive
  • Barely pass through a sheet of paper.
  • Remove electrons from matter as it passes through. (ionize)
beta particles
Beta Particles (ß)
  • Beta particles are formed from break down of a nucleus into 1 e- and 1 proton.
  • (-) negatively charged
  • Fast-moving electrons
  • The e- is thrown from nucleus.
  • Faster than alpha particles
  • Stopped by a thin sheet of metal
  • Ionize other atoms
gamma rays
Gamma rays (γ)
  • than light or X-rays Electromagnetic energy stronger with higher frequency and lower wavelength
  • No charge so they do not ionize
  • cause damage because of high energy.
  • Concrete or 1.5 cm of lead can stop it from traveling through

Left page IN:100

Sketch alpha, beta & gamma decay pictures & the chart beneath the pictures

half life
Half Life

The half life of sodium-25 is 1 minute. How much of a 100 g sample of Na-25 would be left after 1 minute? How much would be left after 2 minutes?

  • Time it takes for ½ of the substance to decay.
  • Different half-lives for different isotopes
  • Can be used to predict how old something is.
nuclear forces

More Nuclear Decay

Nuclear Forces
  • Nuclei with too many or too few neutrons are unstable and become radioactive.
  • More than 83 protons-always unstable, decay
  • Stability depends on the force that holds the nucleus together.
  • Acts between protons and neutrons.
  • Causes them to attract.
  • Only happens over a short distance.
fission vs fusion
Fission vs Fusion
  • Fission is the breaking down of a nucleus
  • Fission can start chain reactions
  • Fusion is combining nuclei
  • Both release a ton of energy
helpful radiation

Radiation in our world

Helpful radiation
  • Can be natural-soil, sun, water, plants
  • Our sun emits solar radiation
  • Can actually change DNA and cause birth defects
  • Smoke alarms
  • Treat cancer
  • Tracers in medicine
  • Tracers in geology
  • Nuclear power-fission
left page assignment in 102
Left Page Assignment IN: 102
  • Make a drawing of fission and fusion.
  • Fission is the breaking down of the nucleus.
  • Fusion is the combining of nuclei.
  • Draw what you think each of these would look like. Make sure to label them.
  • Make a Venn Diagram Comparing & Contrasting them on the bottom half of page 102.

Fusion

1 Difference

Comparison

1 similarity

Fission

1 Difference