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WorksheetsCOE:FU
Total questions: 30
Worksheet time: 24mins
The idea that all things are interconnected and you attract what you focus on.
(a)
The most abundant form of energy in the universe that causes accelerated expansion.
(a)
The rule stating that energy cannot be created or destroyed, only transformed from one form to another or transferred between objects.
(a)
Law that states that matter cannot be created or destroyed, only changed in form.
(a)
The cloud of gas and dust where stars are born.
(a)
The stage formed when clumping in a nebula creates a hot core.
(a)
The process that powers stars by combining light nuclei.
(a)
The process in nuclear reactors where heavy atoms split to release energy.
(a)
The age of the universe according to the Wilkinson Microwave Anisotropy Probe (WMAP).
23.7 billion years ago
13.7 billion years ago
12.6 billion years ago
14.9 billion years ago
The theory stating that the universe expanded from a very hot, dense single point.
(a)
The mechanism explaining how more baryons (matter) formed than antibaryons.
(a)
The lightest element created after the Big Bang.
(a)
The stellar remnant left after an average-sized star dies.
(a)
A remnant that forms from a massive star after a supernova, extremely dense, made of neutrons.
(a)
The final stage of the most massive stars after collapse.
(a)
The condition where particles and antiparticles behave differently in reactions.
(a)
Why is dark energy said to be more abundant than dark matter?
It creates stars
It powers nuclear reactions
It drives the accelerated expansion of the universe
It forms the first elements
Which elements were formed first after the Big Bang?
Gold and Silver
Hydrogen and Helium
Uranium and Lead
Carbon and Oxygen
What happens to an average star when it dies?
It becomes a red supergiant
It becomes a white dwarf
It becomes a black hole
It becomes a neutron star
Nuclear fusion is a process that involves:
Breaking chemical bonds
Cooling large molecules
Combining light atoms
Splitting heavy atoms
Which of the following is NOT one of Sakharov’s conditions for baryogenesis?
Interactions treat particles and antiparticles differently
Thermal equilibrium is maintained
Baryon number violation
CP symmetry violation
What forms when a very massive star collapses after a supernova?
Red giant
Protostar
Neutron star or black hole
White dwarf
What happens inside a nebula that leads to star formation?
Energy stops moving
Atoms split apart
Clumping of atoms forms a hot core
Fusion begins immediately
Which of the following correctly describes nuclear fission?
Dust collapses into a star
Stars create heavier elements
A large atom splits into smaller atoms
Two hydrogen atoms combine
The Big Bang is described as:
A sudden chemical reaction
A collision of galaxies
An explosion outward in space
An expansion of space itself
What imbalance existed after the Big Bang that allowed matter to survive?
No baryons formed
More matter than antimatter
Equal matter and antimatter
Excess antimatter
More matter survived than antimatter due to an imbalance after the Big Bang.
True
False
The branch of philosophy that asks what it means to exist and investigates the fundamental nature of reality.
(a)
It llowed the formation of other light elements which led to the formation of other heavy elements.
(a)
The epoch when free electrons combined with protons to form neutral atoms and the universe became transparent to light.
(a)
