Radioactivity Experiments Quiz

What is the first step in any radioactivity experiment?

• Measure the background count rate

• Subtract the background readings

• Calculate the number of particles per second

• Measure the count rate with the source

How can you calculate the number of particles per second?

• By dividing the count rate by the time interval

• By multiplying the count rate by the time interval

• By subtracting the time interval from the count rate

• By adding the count rate to the time interval

What safety measure should be taken when handling radioactive sources?

• Use a plastic shield

• Wear gloves

• Stand directly in front of the source

• Measure the count rate only once

Which material is needed to absorb a significant amount of gamma radiation?

• Three centimeters of aluminum

• A sheet of paper

• Lots of centimeters of lead

• A few centimeters of air

What is the purpose of plotting a graph of count rate per second against time?

• To determine the type of radiation

• To calculate the background count rate

• To find the half-life of a substance

• To measure the penetration power of radiation