Questions & Answers
Browse all 15 questions from the
Quantum Physics in the Universe study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
What is the smallest unit of light, which behaves like a particle in quantum physics?
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A
Atom
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B
Photon
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C
Electron
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D
Proton
2
Which force keeps the stars in our galaxy bound together, acting on a much larger scale than quantum forces?
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A
Gravity
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B
Magnetism
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C
Friction
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D
Static electricity
3
What happens to the energy levels of electrons in an atom when they move between orbits?
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A
They disappear
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B
They become infinite
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C
They change by specific amounts
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D
They stay the same
4
Which famous scientist is known for the equation E=mc², which relates energy and mass in the universe?
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A
Isaac Newton
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B
Nikola Tesla
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C
Albert Einstein
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D
Galileo Galilei
5
What is the term for the state where a particle exists in multiple possible locations at once before it is observed?
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A
Superposition
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B
Gravity
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C
Fusion
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D
Reflection
6
What process powers the Sun by fusing hydrogen into helium, involving quantum tunneling?
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A
Combustion
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B
Nuclear fusion
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C
Chemical reaction
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D
Evaporation
7
Which fundamental particle is a key building block of all matter, including planets?
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A
Galaxy
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B
Atom
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C
Nebula
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D
Comet
8
What do quantum physicists call the discrete 'packets' of energy?
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A
Waves
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B
Quanta
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C
Solid
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D
Gas
9
What determines the color of light emitted by a star based on the energy of its photons?
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A
Its frequency
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B
Its shape
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C
Its size
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D
Its mass
10
Which subatomic particle orbits the nucleus of an atom?
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A
Neutron
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B
Proton
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C
Electron
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D
Quark
11
What is the name of the theory that describes the behavior of matter and energy at the smallest scale?
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A
Quantum mechanics
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B
Relativity
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C
Thermodynamics
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D
Optics
12
In the vacuum of space, what is the maximum speed at which information and light can travel?
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A
The speed of sound
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B
The speed of light
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C
The speed of gravity
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D
The speed of an electron
13
Which heavy subatomic particle is found inside the nucleus of an atom alongside the proton?
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A
Electron
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B
Neutron
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C
Photon
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D
Ion
14
What prevents atoms from collapsing, maintaining the structure of planets and stars?
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A
Quantum uncertainty
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B
Air pressure
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C
Wind
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D
Magnetism
15
What is the most abundant element in the universe, consisting of a single proton and electron?
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A
Helium
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B
Oxygen
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C
Hydrogen
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D
Carbon
