Radiation and Half Life

The process of nuclear change in an atom of radioactive material is called... 

• nuclear decay
• nuclear mass
• isotopes
• radon

Tags

NGSS.HS-PS1-8

Radioactive materials have unstable...

• electrons

• protons

• nucleus

• neutrons

Tags

NGSS.HS-PS1-8

A helium nucleus with two protons and a mass number of four is called a(n) ____.

• alpha particle

• electroscope

• beta particle

• gamma ray

Tags

NGSS.HS-PS1-8

The three types of nuclear radiation in increasing order of penetrating power are ____.  

•   alpha, beta, gamma 
• X ray, beta, gamma
• alpha, gamma, beta 
• X ray, gamma, beta 

Tags

NGSS.HS-PS1-8

Radioactive tracers are useful in ____.

• calculating the ages of fossils 
• fueling nuclear reactions 
• determining medical problems 
• treating brain tumors 

Which of the following are example(s) of radioisotope uses?

• Carbon-14 for radiocarbon dating

• Americiu-241 Smoke detectors

• Cobalt-60 Fruit disinfectant/preservation

• Iodine-131 Thyroid diagnosis treatment

• All of the above

Tags

NGSS.HS-PS1-8

Which type of radiation can be stopped by a sheet of paper or clothing?

• Alpha

• Beta

• Gamma

• X ray

Which type of radiation is the most penetrating?

• Alpha

• Beta

• Gamma

Which type of radiation is the most ionising?

• Alpha

• Beta

• Gamma

Radiotherapy uses gamma because it is

• Most penetrating

• Most ionising

• Least penetrating

• Least ionising

Tags

NGSS.HS-PS4-3