The Dark Side of Matter

Question Results

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Question:

What are the elementary particles that make up the atoms?

Response:

	Electron, proton and neutron.
	Up quark, down quark and muon.
	Up quark, down quark and electron.
	Proton, muon and neutrino.

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Question:

What are the fundamental interactions of nature?

Response:

	Gravity, electromagnetism, nuclear (weak), nuclear (strong).
	Gravity, electricity, magnetism.
	Electromagnetism, nuclear (weak), nuclear (strong).
	Gravity, Dark Energy, Dark Matter.

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Question:

Why physicists introduce the neutrino?

Response:

	To explain Dark Energy.
	To explain the observations in atmospheric and collider experiments.
	To explain the Beta decays occurring in certain nuclei.
	To explain the stability of the nucleus.

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Question:

What are the main properties of Dark Matter?

Response:

	It emits light and interacts with atomic nuclei.
	It is electrically neutral and stable.
	It has a positive charge.
	It does not interact gravitationally.

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Question:

What is the main challenge for Direct Detection experiments?

Response:

	Building larger collider to accelerate particles up to the speed of light.
	Distinguish the Dark Energy signal from the background.
	Producing Dark Matter particles from collisions of protons.
	Distinguish the Dark Matter signal from the background.