Which statements about radioactive decay are true? Check all that apply.Most elements are unstable.Radioactive decay happens when one kind of atom becomes another kind.Radioactive elements occur in nature.All elements have the same rate of decay.Carbon-14 decays into nitrogen-14.
one-half✔ one-eighthone-sixteenth
✔ number of half-life cyclesyearsweight of the sample
radioactive basic ✔ stable
A scientist is studying a radioactive element that has a half-life of 63 years. Choose the correct answers from the drop-down menus to complete each statement about the element. It will take years for half of the sample to decay. In 189 years, of the sample will be left. Scientists can figure out how old a sample is by multiplying the by the length of the half-life.
Which statements describe the image? Check all that apply.
Use the drop-down menus to complete the paragraph.
Which object would a geologist date using carbon-14 dating?
How would a geologist use absolute dating to determine the age of sedimentary layers?
✔ 2.6 billion years3.9 billion years5.2 billion years
✔ unstablebalanced stable unbalanced
2.6 billion years3.9 billion years✔ 5.2 billion years
changing slow ✔ constant
2.6 billion years✔ 3.9 billion years5.2 billion years
Did you find these answers helpful?