Physical Science Midterm Exam April 17, 2023)
Quiz by leiza palis
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- Q1
Which of the following is NOT an evidence of star formation?
infrared Radiation
rocks
hydrogen
helium
30s - Q2
How is the energy of star produced?
By decomposition
By combustion
by nuclear fission
by nuclear fusion
30s - Q3
When does a star become unstable?
When it runs out of fuel
When it contracts and expands
When its core is converted to Iron
When the outer shell of star is pulled by the gravity from the center
30s - Q4
Which is the second most abundant element in the universe?
carbon
oxygen
helium
hydrogen
30s - Q5
Which of the following is the sign that a protostar will transform into the next stage?
When Hydrogen nuclear fusion begins
When it starts to glow
When it increases temperature igniting the Hydrogen
When the it starts to spin faster
30s - Q6
What object is formed from gas and dust particles which are pulled together by gravity and no nuclear fusion has happened yet?
red supergiant star
nebula
main sequence star
protostar
30s - Q7
Which is a huge luminous ball of hot gas such as Hydrogen and Helium?
planet
comet
moon
star
30s - Q8
In main sequence star, Hydrogen fuses and converted to Helium. What element is produced from Helium gas at its core??
iron
neon
carbon
silicon
30s - Q9
This is when C-12 fused with H to form N-13. Then the N-13 undergoes beta decay to form C-13 and the process will continue to capturing O-15 and the cycle begin. What do you call this process that takes place in a massive star?
Tri alpha process
proton-proton chain reaction
Carbon, Nitrogen, Oxygen Cycle
Alpha ladder
30s - Q10
Which process begins when two 4He nuclei fuse to form an unstable 8Be nucleus
Carbon, Nitrogen, Oxygen Cycle
proton-proton chain reaction
Tri alpha process
Alpha ladder process
30s - Q11
Which process does an average star gets their energy and convert Hydrogen into Helium?
Alpha Ladder Process
Proton-proton chain reaction
Tri Alpha Process
Carbon, Nitrogen, Oxygen Cycle
30s - Q12
It was created by bombardment of molybdenum by deuterons (heavy hydrogen, H12), by Emilio Segre and Carlo Perrier in 1937. What element is this?
Helium
Oxygen
Uranium
Technetium
30s - Q13
Which is known as the origin and production of heavy elements?
R-Process
Supernova Nucleosynthesis
Stellar Nucleosynthesis
Primordial Nucleosynthesis
30s - Q14
Who successfully carried out a nuclear transmutation reaction, a process of transforming one element or isotope into another element?
Rutherford
Moseley
Chadwick
Mendeleev
30s - Q15
What device is used to speed up the protons to overcome the repulsion between the protons and the target atomic nuclei by using magnetic and electrical fields?
Particle Accelerator
all of the above
Particle Decelerator
Spectroscopy
30s