Fundamental Particles of Matter

Atoms or elements consist of _____ and _____ in their nuclei

• protons and neutrons

• protons and electrons

• electrons and neutrons

• nucleus

The Up Quark has a ____ while The Down Quark has a ____ electrical charge.

• positive (+) ; positive (+)

• negative (−) ; positive (+);

• positive (+); negative (−)

• negative (−) ; negative (−)

The Proton is made up of __

• one Up Quark and two Down Quarks

• two Up Quark and two Down Quarks

• one Up Quarks and one Down Quark

• two Up Quarks and one Down Quark

The resulting electrical charge of the Neutron is:

• (+2/3) + (+2/3) + (−1/3) = (+1).

• (+2/3) + (−1/3) + (−1/3) = (0).

• (+2/3)

• (−1/3) + (1/3) = (0)

Why is a neutrino so difficult to detect?

• It travels at velocities faster than the speed of light

• It has no electrical charge, so it does not affect nearby particles

• It doesn't really exist

• It has an electrical charge of (−1) and plays an active role in chemical reactions.

The anti-particle of the electron is known as

• Anti-leptons

• positrons

• hadrons

• fermions

Electrons and neutrinos are known as the family of ___

• Leptons

• Hadrons

• Fermions

• Baryons

What makes something radioactive?

• an unstable nucleus

• elements which have higher atomic number

• neutral atom

• no answer

How does radioactive material generate electricity?

• the decay of Uranium create enough forces to turn turbines directly

• the explosion of unstable atom create enough forces to turn turbines directly

• no answer

• the heat generated during fission creates steam that powers electricity generating turbines

Which of the following typically poses the biggest health threat to humans?

• alpha particles

• beta particles

• gamma rays

• they all pose threats. It depends on the situation in question.