Q.1
The half-life of Iodine-is 8 days. What does this mean?
  • The lifespan of Iodine-131 is 8 days
  • Iodine-131 takes 8 days to become a radioactive material
  • Iodine-131 takes 8 days to decay to half the amount of its original amount
  • Iodine-131 takes days to become a non-radioactive material
Q.2
A sample of Radium-decays fromto 12.5g. How many half lives did it experience?
  • 1
  • 2
  • 3
  • 4
Q.3
The process of nuclear change in an atom of radioactive material is called...
  • nuclear decay
  • nuclear mass
  • isotopes
  • radon
Q.4
"A random and spontaneous process where an unstable nucleus emits radioactive radiation until the nucleus becomes more stable.."The statement above refer to...
  • Half -life
  • Nuclei decay
  • Radioactivity
  • Radioactive decay
Q.5
Why can't carbon-dating be used on dinosaur remains?
  • The remains of living creatures cannot be accurately dated with carbon-14
  • The carbon-14 isotope did not exist during the age of the dinosaurs.
  • Dinosaurs were reptiles who had no carbon-14 in their systems.
  • Carbon dating is only accurate to 60,000 years ago-- well after the age of the dinosaurs.
Q.6
Carbon dating relies on
  • the fact that all living things contain a small amount of carbon-14
  • organisms dying
  • washing your hands
  • organism remaining constant
Q.7
The time it takes for a radioactivity level to drop by a half is is the sample's ___________________.
  • quarter life
  • whole life
  • wonderful life
  • half life
Q.8
Ifmg of iodineis given to a patient, how much is left after 8 days? The half-life of iodine-is 8 days.
  • 5.0mg
  • 1.25g
  • 10g
  • 10mg
0 h : 0 m : 1 s