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Senior High School: 11th and 12th Grade
Physics
Radioactivity - Nuclear Fusion
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Q.1
When a star dies, which of the following could a star turn into?
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White dwarf
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Black hole
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Supernova
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All of the above
Q.2
Why does a star not explode or collapse during the 'main sequence' of its life?
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Not enough energy within the star to explode or collapse
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The forces within it are in equilibrium
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The star is solid so cannot collapse
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They do explode when they reach their 'main sequence'
Q.3
Every star goes through a life cycle. What is this life cycle determined by?
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Elements within the star
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Size of the star
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Gravity surrounding the star
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Number of planets orbiting the star
Q.4
What is nuclear fusion?
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Nuclear fusion is the separation of an atomic nucleus into two smaller nuclei
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Nuclear fusion is the joining of two atomic nuclei into one larger nucleus
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Nuclear fusion is the process by which atoms absorb energy
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Nuclear fusion occurs when atoms absorb electrons
Q.5
How can we detect black holes if we can't see them?
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We can see them when other stars shine on them
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We can detect their immense gravitation strength affecting other objects
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We can send probes into space and if we lose one we know it has entered a black hole
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There is no way to detect black holes
Q.6
Which element was abundant in the early universe?
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Hydrogen
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Iron
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Oxygen
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Zinc
Q.7
What force pulls dust and gas together in space to form stars?
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Electro-weak force
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Electromagnetic force
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Gravity
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Strong force
Q.8
How were most of the heavier elements in the universe created?
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Within stars and ejected into space when the stars exploded
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Gravity pulled smaller atoms together
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Electro-attraction
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Smaller atoms randomly collided together to form heavier elements
Q.9
Which element is the main source of fuel that our sun uses for the process of nuclear fusion?
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Hydrogen
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Zinc
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Boron
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Lead
Q.10
Which of the following is an example of nuclear fusion?
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Energy released by nuclear power plants
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Energy created to power trains
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Energy released in stars
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Energy released to thrust rockets into space
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