Today's Rocket Words: Your 5 words and meanings to learn
half-life
the average time it takes for half of the atoms in a radioactive material to decay
sample
a smaller, manageable version of a larger group
radioactive decay
the emission of radiation by a radioactive isotope
decline
a gradual and continuous loss of strength, numbers, quality or value
ratio
shows the relative size between numbers; how many times one number contains another