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WorksheetsSCI 530 Review
Total questions: 62
Worksheet time: 47mins
During which phase of a star's life cycle does nuclear fusion primarily occur in its core, releasing energy in the form of light and heat?
Main Sequence Phase
Red Giant Phase
Protostar Phase
White Dwarf Phase
More evolved stars have an onion-like structure where different elements can be found. At what level would you find Silicon? (HINT: Refer to the element's position on the periodic table.)
1
2
3
None
More evolved stars have an onion-like structure where different elements can be found. At what level would you find Helium? (HINT: Refer to the element's position on the periodic table)
1
2
3
None
Which of the following elements are represented in the spectrum below?
Calcium
Hydrogen Only
Helium Only
Hydrogen and Helium
Which element is not present in the mystery star's spectrum?
Hydrogen
Calcium
Iron
Magnesium
After the gas of a nebula condenses, it forms a _____.
Proto-star
Main Sequence Star
Red Giant
Super Red Giant
What is the longest stage of a star's life?
Main Sequence Star
Proto-star
Black Hole
Planetary Nebula
What is formed when a super red giant star implodes?
Black Hole
Red Dwarf
Main Sequence Star
Nebula
Where are stars formed?
Nebula
Proto-star
Black Hole
Planetary Nebula
What is formed when a super red giant implodes and doesn't have enough mass to create a black hole?
Neutron Star
Quasar
White Dwarf
Black Dwarf
What is it called when a medium-sized star implodes and leaves behind a dim core?
Red Dwarf
Black Dwarf
Planetary Nebula
Nebula
Our sun is:
An average Main Sequence Star
A high mass star
The largest star in the galaxy
The brightest star in the galaxy
This term is used to describe what stars in the main sequence are doing (fusing hydrogen atoms to make helium):
nuclear fusion
protostar
black hole
nebula
What determines the life cycle of a star after the main sequence?
Mass
Distance from Earth
Color
Temperature
What does it mean when an element is radioactive?
All of the above
The atom emits radiation
The nuclei are unstable due to an uneven proton to neutron ratio
The nuclei change to become stable
What does it mean if a galaxy's spectrum is red-shifted?
It's moving away
It's moving closer
It's cold
It's hot
What does it mean if a star's spectrum is red-shifted?
The star is moving away from Earth
The star is staying the same distance from Earth
The star is getting closer to Earth
It means nothing.
According to the Doppler Effect, if an object is moving away, the wavelengths are...
longer
shorter
they stay the same
it depends
What existed before the Big Bang?
Nothing
Time
The universe
Matter
What are the two most abundant elements in the universe and in stars?
hydrogen & helium
oxygen & helium
hydrogen & oxygen
nitrogen & hydrogen
According to the ________________, all of the matter and energy in the Universe was once condensed into a single, incredibly dense point. This then exploded and began to expand in all directions.
Big Bang Theory
Hubble Theory
Sheldon Cooper
Quarks Theory
This periodic table includes information about the origins of elements. Which statement is supported by the image?
Only hydrogen and helium were formed from the Big Bang
No elements are made by small stars
Most elements came from the Big Bang
The most important elements for life were man-made
The periodic table includes information about the origins of elements. Where did most of the elements in the universe come from?
Large Stars
Supernovae
Cosmic Rays
Small Stars
The periodic table includes information about the origins of elements. True or False: More elements come from small stars than cosmic rays.
True
False
When an atom's nucleus splits, it is called Nuclear...
Fission
Fusion
Synthesis
Fallout
What is the difference between Fission and Fusion?
Fission splits atoms, and Fusion combines atoms.
Fusion splits atoms, and Fission combines atoms.
They both combine atoms.
They both split atoms.
What type of energy is this?
Fission
Fusion
Electricity
Steam Power
What Nuclear particle is represented by this symbol?
(a)
What Nuclear particle is represented by this symbol?
(a)
What Nuclear particle is represented by this symbol?
(a)
These particles can cause the most damage to the body when inside, but are stopped by something as thin and light as a sheet of paper.
Alpha
Beta
Gamma
Neutron
This type of particle can penetrate almost anything. It is stopped by lead or concrete.
gamma
alpha
beta
neutron
What is fission?
The splitting of an atomic nucleus.
A positive particle in the nucleus.
The amount of time it takes for approximately half a substance to decay.
The joining of multiple atomic nuclei.
A proton is...
the positive particle in the nucleus
the neutral particle in the nucleus
the negative particle in the nucleus
the negative particle around the nucleus
What is a neutron?
The neutral particle in the nucleus
The positive particle in the nucleus
The negative particle in the nucleus
The negative particle around the nucleus
What is alpha decay?
It is essentially a He nucleus, comprised of two protons and two neutrons.
It is essentially an electron, resulting from the breakdown of a neutron in the nucleus.
It is the release of a high energy photon. It has no mass or charge.
It is essentially an H nucleus, comprised of one proton.
Fusion is...
The joining of multiple atomic nuclei.
The amount of time it takes for approximately half a substance to decay.
Positive particle in the nucleus.
The splitting of an atomic nucleus.
What is Beta decay?
It is essentially an electron, resulting from the breakdown of a neutron in the nucleus.
It is essentially a He nucleus, comprised of two protons and two neutrons.
It is the release of a high energy photon. It has no mass or charge.
It is essentially an H nucleus, comprised of one proton.
If Thorium-234 undergoes beta decay, what element will be left in its place?
Protactinium-234
Thorium-233
Actinium-234
Radium-230
What is Gamma decay?
The release of a high energy photon. It has no mass or charge.
Essentially a He nucleus, comprised of two protons and two neutrons.
Essentially an electron, resulting from the breakdown of a neutron in the nucleus.
Essentially an H nucleus, comprised of one proton.
Arrange in order of increasing ability to penetrate matter.
Alpha, Beta, Gamma
Beta, Gamma, Alpha
Alpha, Gamma, Beta
Gamma, Beta, Alpha
Which element is produced when Bi-210 undergoes alpha decay?
Tl-206
Au-208
At-214
Fr-212
What happens to the atomic number in beta decay?
It increases by 1
It decreases by 1
It decreases by 2
It is not changed
What happens when a nucleus emits an alpha particle?
Atomic mass decreases by 4
Atomic mass increases by 4
Atomic mass increases by 2
Atomic mass decreases by 2
What does it mean when an element is radioactive?
All of the above
The atom emits radiation
The nuclei are unstable due to an uneven proton to neutron ratio
The nuclei change to become stable
What happens to the atomic number during alpha decay?
The atomic number decreases by 2
The atomic number decreases by 4
The atomic number increases by 1
The atomic number stays the same
Which nuclear process produces radioactive waste?
Fission
Fusion
Both produce waste
Neither produces waste
This nuclear process involves the production of energy when two atoms combine.
Fusion
Fission
This nuclear process involves energy production when a giant atom splits.
Fission
Fusion
This nuclear process requires very high temperatures.
Fusion
Fission
This is the nuclear process used to generate energy in a nuclear power plant.
Fission
Fusion
This nuclear process involves a neutron bombarding a large, unstable atom.
Fission
Fusion
This nuclear process is utilized in an atomic bomb.
Fission
Fusion
Choose the correct answer for the beta decay of
Complete the nuclear equation and determine the type of decay occurring in this reaction.
Alpha
Beta
Gamma
Delta
Choose the correct answer for the alpha decay of
In this decay, what element is represented by the "?"
