Create an account
which of the following is Not emitted in radioactive decay
alpha particles, electrons, high-energy electromagnetic radiation, beta rays
the reason alpha rays are easy to stop is that they
are relatively big, are doubly charged, slow down easily
is an isotope of hydrogen, is stable, consists of one proton and one neutron, can become part of a molecule called heavy water
the half-life of a certain isotope is 1 day. at the end of 2 days how much of the isotope remains
the reason carbon dating works is that
after a plant or animal dies, it stops taking in fresh carbon-14
the radioactive tracers can be used to help
farmers use the proper amount of fertilizer, doctors trace food as it moves through the body, engineers how parts of a car withstand age, and public utility workers trace leaks in buried pipes
when a nucleus emits a beta particle, its atomic number
changes but its mass number remains constant
an element will decay to another element with higher atomic number in the periodic table if it emits
a beta particle
in order for an atom to decay to an element that is one greater in atomic number, it can emit
1 alpha particle and 3 beta particles, 1 positron and 2 beta particles, 1 beta particle
you should limit the amount of extra radiation to which you are exposed, because
radiation is harmful to the body, the body can only handle certain amount of radiation in one lifetime, radiation disrupts the body's intricately structured cell system
an experimenter finds that 50% of a sample of uranium-238 has decayed. since uranium-238 has a half-life of 4.5 billion years, the sample's age is about
4.5 billion years
a sample of a certain radioactive material has a half-life of 1 year. how much of this radioactive material will be left at the end of 3 years
the half-life of carbon-14 is 5730 years. suppose a basket was found that contains one half as much carbon-14 as a new basket of the same material. what is the approximate age of the basket
the half-life of carbon-14 is 5730 years. if a 1 gram sample of old carbon is 1\8 as radioactive as 1 gram of a current sample, then the age of the old sample is
a certain radioactive isotope placed near a geiger counter registers 160 counts per second. eight hours later, the counter registers 10 counts per second. what is the half-life of the isotope
a certain radioactive isotope placed near a geiger counter registers 120 counts per minute. if the half-life of the isotope is 1 day, what will the count rate ve at the end of 4 days
neutrons are stable particles and can last for millions of years by themselves without spontaneously decaying
of the three major kinds of radioactivity, gamma rays can penetrate the farthest into a material
the atomic number of an element is the same as the number of protons in the nucleus of an atom of that elelment
archeologist use a technique called carbon dating to establish dates of bones and wooden artifacts
uranium dating is another way to date materials, but it is limited to rocks that have been formed only recently in the history of the earth
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together