The Sun [30 MCQs]

What are sunspots primarily caused by?

• Meteor impacts on the Sun
• Areas of the Sun cooling down
• Magnetic activity on the Sun's surface
• Reflection of planets on the Sun

Solar flares can cause disruptions in which of the following on Earth?

• Gravitational forces
• Atmospheric pressure
• Communication systems
• Earth's rotation

Which phase marks the end of a star's life cycle, similar in mass to the Sun?

• Supernova
• Neutron star
• White dwarf
• Black hole

The Sun is currently in which stage of its life cycle?

• Protostar
• Main sequence star
• Red giant
• White dwarf

What phenomenon describes the sudden release of energy from the Sun, resulting in a bright spot and the ejection of solar material?

• Solar wind
• Sunspot
• Solar flare
• Solar eclipse

Approximately how long is the Sun's life cycle expected to last?

• 1 billion years
• 5 billion years
• 10 billion years
• 50 billion years

Which layer of the Sun is visible during a total solar eclipse?

• Photosphere
• Chromosphere
• Corona
• Radiative zone

During which event are day and night of approximately equal length everywhere on Earth?

• Solstice
• Equinox
• Aphelion
• Perihelion

The longest day of the year in the Northern Hemisphere occurs during which event?

• Winter Solstice
• Summer Solstice
• Vernal Equinox
• Autumnal Equinox

Why does the Southern Hemisphere experience winter when the Northern Hemisphere experiences summer?

• The Southern Hemisphere is farther from the Sun
• The Earth's axis is tilted, causing different parts of the Earth to receive varying amounts of sunlight
• The Moon blocks sunlight from reaching the Southern Hemisphere
• The Earth is closer to the Sun during this time