The release of particles and energy from an unstable nucleus

• Isotopes

• Radioactivity

• X rays

• Electromagnetic energy

Who discovered the radioactivity?

• Marie Curie

• Pierre Curie

• Henri Becquerel

• All of them

What are the two elements discovered by Marie Curie?

• Po and Fr

• U and Pu

• Po and Ra

• Ra and FR

What isotope is measured in the radioactive dating?

• Carbon 12

• Carbon 14

• Carbon 15

• Carbon 16

Use of the radioactive elements in medicine

• Chemotherapy

• Radiotherapy

• Radioactive dating

• Nuclear energy

Which machine is not using nuclear energy

• Submarine

• Satellite

• Nuclear plant

• Car

Nuclear disaster in 1986 produced by a human mistake

• Chernobyl

• Fukushima

Nuclear disaster in 2011 produced by an earthquake and a tsunami

• Chernobyl

• Fukushima

This decay is composed of two protons and two neutrons

• Alpha

• Beta

• Gamma

This decay is only energy with the highest frequency

• Alpha

• Beta

• Gamma