Radioactivity
What kind of film is used in a radiation badge?
Photographic
Isotopes are atoms of the same element but have a different number of what?
Neutrons
What is the term for the radiation present in our bodies?
Internal Radiation
Does the activity of a radioactive sample increase or decrease over time?
True or False? In a nuclear reaction, the nucleus can change slightly
True
A Geiger Counter can be used to help determine what?
Radioactivity
What term refers to the splitting of a heavy nucleus into 2 smaller nuclei?
Fission
Radon gas makes up for what percent of our background radiation?
50%
In terms of the number of nuclei, the half-life of a radioactive isotope is the average time it takes for half of the nuclei in the isotope to _____________ into some other isotope.
Decay
What are the 3 kinds of radioactive decay?
Alpha, Beta, Gamma
Who founded Radioactivity in 1896?
Antoine Henri Becquerel
Scientists can force a nuclear reaction by smashing the nuclei to make it ____________. This is known as a induced nuclear reaction.
Unstable
What helps protect us from Cosmic radiation?
Our Atmosphere
The average time taken for half of the original mass of a sample to decay is know as __________-__________
Half-Life
Who came up with the Mass-energy equation?
Albert Einstein
How many half-lives does it take before radioactive waste material is safe?
20 half-lives
When comparing protons and neutrons on a graph, the area that shows the stable nuclei is known as our what?
Band of Stability
What is the unit of measurement for Radioactivity? Give me name and Abbreviation for full credit
Becquerels (Bq)
What is the half life for Radon 224?
60 Sec (a minute)
Exposure to what kind of radiation is increased from jet travel?
Cosmic (From being in a higher altitude)
In a Geiger tube, the beta and gamma radiation can penetrate the side walls...What is the part of the tube called where the alpha radiation can enter?
Thin Mica Window
Come up to the board a write out the beta particle emission equation
1 n -----> 1 p + 0 e
0 1 -1
When stars explode, they release cosmic radiation. What is the term for exploding star?
Supernova
If Hydrogen 3 has a half-life of 12 years. What year will it be when there is 8 grams present assuming we start with 16 in the year 2000?
2012
Come up to the board and balance the following equation
Answer may vary