Chapter 13 True or False 2

Gamma rays have no energy.

• True

• False

Gamma rays cannot be deflected by electric field.

• True

• False

Gamma rays can be deflected by magnetic field.

• True

• False

Gamma rays are never completely stopped.

• True

• False

1 becquerel is equal to 1 event per second.

• True

• False

1 becquerel is equal to 1 disintegration per second.

• True

• False

The rate of decay (activity) is a characteristic of the radioactive element.

• True

• False

The rate of decay (activity) is affected by the temperature.

• True

• False

The activity of a radioactive sample increases with time.

• True

• False

The half-life of the radioactive substances ranges from about femtosecond (10-15 s) to billions of year.

• True

• False