Welcome to the Suns Structure and Features MCQs with Answers. In this post, we are sharing Suns Structure and Features Multiple Choice Questions and Answers in Astronomy section for various competitive exams in Pakistan. Each question offers a chance to enhance your knowledge regarding Suns Structure and Features online MCQs Test.
What is the outermost layer of the Sun called?
a) Photosphere
b) Chromosphere
c) Corona
d) Core
Which layer of the Sun is responsible for its visible light?
a) Core
b) Corona
c) Chromosphere
d) Photosphere
What is the primary source of the Sun’s energy?
a) Nuclear fusion
b) Chemical reactions
c) Gravitational contraction
d) Electromagnetic radiation
What process occurs in the core of the Sun?
a) Photosynthesis
b) Nuclear fission
c) Nuclear fusion
d) Radioactive decay
Which part of the Sun’s atmosphere is visible during a total solar eclipse?
a) Chromosphere
b) Photosphere
c) Core
d) Corona
How thick is the Sun’s photosphere?
a) About 100 km
b) About 1,000 km
c) About 10,000 km
d) About 100,000 km
What is the temperature of the Sun’s core?
a) About 5,500 K
b) About 15,000 K
c) About 1.5 million K
d) About 15 million K
Which layer of the Sun lies directly above the photosphere?
a) Core
b) Chromosphere
c) Corona
d) Convective zone
What phenomenon is characterized by eruptions of solar material from the Sun’s surface?
a) Solar flares
b) Sunspots
c) Coronal mass ejections
d) Solar wind
Which layer of the Sun is responsible for solar wind production?
a) Photosphere
b) Chromosphere
c) Corona
d) Convective zone
What are sunspots?
a) Hot areas on the Sun’s surface
b) Cooler areas on the Sun’s surface
c) Regions of high solar wind activity
d) Flares on the Sun’s surface
What type of convection occurs in the Sun’s convective zone?
a) Radiative convection
b) Differential convection
c) Granular convection
d) Turbulent convection
What is the average temperature of the Sun’s photosphere?
a) About 3,000 K
b) About 5,500 K
c) About 7,000 K
d) About 10,000 K
How does energy from the Sun’s core travel to the photosphere?
a) Through conduction
b) Through convection
c) Through radiation
d) Through magnetic fields
What causes the Sun’s magnetic field?
a) Solar winds
b) Sunspots
c) Differential rotation and convection
d) Solar flares
Which layer of the Sun is known for its high density and temperature?
a) Convective zone
b) Radiative zone
c) Chromosphere
d) Photosphere
What is the average surface temperature of the Sun?
a) About 3,000 K
b) About 5,500 K
c) About 7,000 K
d) About 10,000 K
What is the main composition of the Sun’s core?
a) Helium and hydrogen
b) Hydrogen and oxygen
c) Helium and carbon
d) Hydrogen and iron
Which of the following features is associated with solar activity?
a) Sunspots
b) Aurora borealis
c) Lunar eclipses
d) Comets
What causes the Sun to have an 11-year cycle of activity?
a) The movement of planets
b) Changes in solar magnetic activity
c) Changes in solar radiation
d) Variations in solar wind
What type of solar phenomena are associated with sudden, intense bursts of radiation?
a) Solar flares
b) Coronal mass ejections
c) Sunspots
d) Solar winds
What is the primary function of the Sun’s convective zone?
a) Energy production
b) Energy transport
c) Magnetic field generation
d) Light emission
How long does it take for energy produced in the Sun’s core to reach the surface?
a) A few days
b) A few weeks
c) A few thousand years
d) A few million years
What is the main cause of sunspots?
a) High solar winds
b) Magnetic field variations
c) Solar flares
d) Coronal mass ejections
Which layer of the Sun is responsible for the emission of X-rays?
a) Photosphere
b) Chromosphere
c) Corona
d) Core
What is the Sun’s outermost atmospheric layer known for its low density and high temperature?
a) Chromosphere
b) Photosphere
c) Convective zone
d) Corona
What phenomenon occurs when the Sun’s magnetic field lines reconnect, releasing energy?
a) Solar wind
b) Solar flare
c) Coronal mass ejection
d) Sunspot
How deep is the Sun’s convective zone?
a) About 200,000 km
b) About 300,000 km
c) About 500,000 km
d) About 700,000 km
What is the primary component of the Sun’s atmosphere?
a) Helium
b) Oxygen
c) Hydrogen
d) Carbon dioxide
How do solar winds affect Earth?
a) They cause lunar eclipses
b) They create auroras
c) They increase solar flares
d) They influence tidal forces
What is the Sun’s core primarily responsible for?
a) Light emission
b) Energy production through nuclear fusion
c) Solar wind creation
d) Sunspot formation
Which layer of the Sun is characterized by the presence of sunspots?
a) Photosphere
b) Chromosphere
c) Corona
d) Convective zone
What phenomenon is observed when the Sun’s magnetic field lines become twisted and break?
a) Coronal mass ejection
b) Solar wind
c) Solar flare
d) Sunspot cycle
What causes the Sun to have different layers with varying temperatures?
a) Differential rotation and convection
b) Magnetic fields
c) Gravitational forces
d) Solar winds
What is the primary method of energy transfer from the Sun’s core to its surface?
a) Convection
b) Conduction
c) Radiation
d) Solar wind
What is the Sun’s convective zone responsible for?
a) Generating energy
b) Transporting energy to the surface
c) Emitting light
d) Creating sunspots
Which feature of the Sun is typically observed as a dark spot on its surface?
a) Sunspot
b) Solar flare
c) Coronal mass ejection
d) Solar wind
What effect does the Sun’s rotation have on its magnetic field?
a) It causes the magnetic field to weaken
b) It creates a complex magnetic field structure
c) It has no effect
d) It makes the magnetic field uniform
Which layer of the Sun is characterized by the presence of large-scale magnetic activity?
a) Core
b) Chromosphere
c) Convective zone
d) Corona
What is the Sun’s core primarily composed of?
a) Hydrogen
b) Helium
c) Carbon
d) Iron
What is the average temperature of the Sun’s corona?
a) About 1,000 K
b) About 5,000 K
c) About 10,000 K
d) About 1 million K
What happens when the Sun’s magnetic field lines reconnect?
a) Solar winds intensify
b) Sunspots form
c) Solar flares occur
d) Coronal mass ejections occur
Which solar feature is associated with large loops of plasma extending into the corona?
a) Solar wind
b) Sunspots
c) Solar prominences
d) Coronal holes
What causes the Sun’s corona to be much hotter than its photosphere?
a) Convection
b) Magnetic activity
c) Nuclear fusion
d) Solar winds
Which of the following layers is the Sun’s energy production zone?
a) Convective zone
b) Radiative zone
c) Chromosphere
d) Photosphere
What is the primary cause of the Sun’s sunspots?
a) Magnetic field distortions
b) Temperature fluctuations
c) Energy release
d) Solar wind variations
Which part of the Sun’s atmosphere can only be seen during a total solar eclipse?
a) Photosphere
b) Chromosphere
c) Convective zone
d) Corona
What layer of the Sun is responsible for the solar wind?
a) Chromosphere
b) Photosphere
c) Convective zone
d) Corona
What phenomenon involves the release of high-energy particles from the Sun?
a) Solar wind
b) Solar flares
c) Coronal mass ejections
d) Sunspots
How does the Sun’s magnetic field affect its surface activity?
a) It causes solar wind variations
b) It creates sunspots and solar flares
c) It increases the Sun’s temperature
d) It controls the Sun’s rotation speed
What is the typical duration of the Sun’s sunspot cycle?
a) About 1 year
b) About 5 years
c) About 11 years
d) About 50 years
What type of radiation is predominantly emitted by the Sun’s core?
a) X-rays
b) Visible light
c) Infrared
d) Ultraviolet
What feature of the Sun’s atmosphere causes the formation of solar flares?
a) Magnetic field lines
b) Photospheric granules
c) Coronal holes
d) Solar prominences
Which layer of the Sun acts as a transition between the core and the convective zone?
a) Radiative zone
b) Chromosphere
c) Photosphere
d) Corona
What is a significant characteristic of the Sun’s convective zone?
a) High density and temperature
b) Low density and high temperature
c) Convection cells or granules
d) Magnetic field interactions
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