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The Sun and Its Effects : Space
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Practice Test
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Question 1 of 32
What type of star is the Sun?
Choose 1 answer
Red giant
White dwarf
Yellow dwarf
Neutron star
Question 2 of 32
What is the average surface temperature of the Sun?
Choose 1 answer
3,000°C
5,500°C
15,000°C
25,000°C
Question 3 of 32
Which layer of the Sun is visible to us?
Choose 1 answer
Corona
Chromosphere
Photosphere
Core
Question 4 of 32
How long does it take for sunlight to reach Earth?
Choose 1 answer
1 second
8 minutes
12 hours
24 hours
Question 5 of 32
What is the Sun primarily made of?
Choose 1 answer
Iron
Oxygen
Hydrogen and Helium
Nitrogen
Question 6 of 32
What is the Sun's role in the solar system?
Choose 1 answer
It generates gravity to keep planets in orbit
It provides light and heat
It drives weather systems
All of the above
Question 7 of 32
What is a solar flare?
Choose 1 answer
A type of planet
A burst of radiation from the Sun's surface
A collision between stars
A solar eclipse event
Question 8 of 32
What can solar flares affect on Earth?
Choose 1 answer
Internet signals
Weather systems
Satellite communication
Gravity
Question 9 of 32
What is the Sun's core responsible for?
Choose 1 answer
Generating solar wind
Producing energy via nuclear fusion
Emitting visible light
Creating sunspots
Question 10 of 32
What are sunspots?
Choose 1 answer
Cooler regions on the Sun's surface
Hotter regions on the Sun
Asteroids near the Sun
Solar flares in the making
Question 11 of 32
Which of the following is an effect of the Sun's ultraviolet (UV) radiation on Earth?
Choose 1 answer
Global warming
Ozone layer depletion
Earthquakes
Ocean tides
Question 12 of 32
What is solar wind?
Choose 1 answer
Wind on the surface of the Sun
A stream of charged particles released from the Sun
A solar flare
Radiation from the Sun
Question 13 of 32
How does the Sun generate energy?
Choose 1 answer
Nuclear fusion
Nuclear fission
Gravitational collapse
Combustion
Question 14 of 32
Which of the following phenomena occur due to interactions between the Sun's solar wind and Earth's magnetic field?
Choose 1 answer
Tsunamis
Volcanic eruptions
Auroras
Earthquakes
Question 15 of 32
How old is the Sun approximately?
Choose 1 answer
1 billion years
4.6 billion years
10 billion years
15 billion years
Question 16 of 32
What will happen to the Sun at the end of its life cycle?
Choose 1 answer
It will become a black hole
It will explode as a supernova
It will expand into a red giant and then shrink into a white dwarf
It will merge with another star
Question 17 of 32
What effect does the Sun have on Earth's climate?
Choose 1 answer
None
It causes all weather patterns
It influences long-term climate changes
It controls tectonic plate movements
Question 18 of 32
Which part of the Sun is the hottest?
Choose 1 answer
The core
The chromosphere
The photosphere
The corona
Question 19 of 32
Which process powers the Sun?
Choose 1 answer
Chemical combustion
Nuclear fusion
Nuclear fission
Magnetic resonance
Question 20 of 32
What protects Earth from harmful solar radiation?
Choose 1 answer
Earth’s atmosphere
Ozone layer
Earth’s magnetic field
All of the above
Question 21 of 32
What is the approximate diameter of the Sun?
Choose 1 answer
1 million km
1.4 million km
10 million km
100,000 km
Question 22 of 32
What is the primary cause of the Sun's sunspots?
Choose 1 answer
High temperatures
Magnetic activity
Solar flares
Coronal mass ejections
Question 23 of 32
What is the solar maximum?
Choose 1 answer
The time of year when the Sun is closest to Earth
The peak period of the Sun's 11-year activity cycle
The moment when solar radiation is at its lowest
The time when the Sun's magnetic field reverses
Question 24 of 32
How does the Sun affect the Earth’s magnetosphere?
Choose 1 answer
It warms the magnetosphere
It disturbs the magnetosphere with solar wind and CMEs
It cools the magnetosphere
It creates gravitational tides
Question 25 of 32
Which event can lead to auroras on Earth?
Choose 1 answer
Solar eclipse
Lunar eclipse
Coronal mass ejection
Planetary alignment
Question 26 of 32
What is the significance of the solar corona’s temperature being much higher than the Sun’s surface?
Choose 1 answer
It is due to the Sun’s core being cooler
It is due to solar wind emissions
It is a result of magnetic field heating
It is due to radiation absorption
Question 27 of 32
What are the typical speeds of solar wind particles?
Choose 1 answer
10-20 km/s
50-100 km/s
300-800 km/s
1,000-2,000 km/s
Question 28 of 32
What role does the Sun play in the Earth's water cycle?
Choose 1 answer
It evaporates water from oceans
It cools water on Earth's surface
It has no effect on the water cycle
It causes ocean currents
Question 29 of 32
What phenomenon can cause temporary disruptions in power grids on Earth?
Choose 1 answer
Solar flares
Lunar eclipses
Meteor showers
Sunspots
Question 30 of 32
What determines the length of the Sun’s solar cycle?
Choose 1 answer
The Sun's magnetic field strength
The Sun's distance from Earth
The frequency of solar flares
The Sun’s rotation rate
Question 31 of 32
What type of radiation from the Sun can be harmful to human health?
Choose 1 answer
Infrared radiation
Visible light
Ultraviolet radiation
Radio waves
Question 32 of 32
How does the Sun affect Earth's climate in the short term?
Choose 1 answer
By altering atmospheric gases
By changing the Earth's orbit
Through variations in solar radiation
By influencing ocean currents
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