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Dwarf Planets and Exoplanet Detection Quiz

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Dwarf Planets and Exoplanet Detection Quiz

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Questions and Answers

How can we detect exoplanets indirectly?

By detecting planets using transit or eclipse methods

By taking pictures and spectra of planets

By measuring a star's position in the sky (correct)

Through gravitational lensing

What process allows nuclear energy to escape the sun?

Gravitational equilibrium (correct)

Radiative transfer

Thermal conduction

Magnetic repulsion

What prevents the pressure buildup in a contracting gas cloud during star formation?

Conversion of thermal energy into infrared and radio photons (correct)

Formation of dark clouds

Stronger contraction due to gravity

Increased gas density

What causes solar flares on the Sun?

Twisting of magnetic field lines Signup and view all the answers

What characteristic defines a star being on the main sequence?

It is fusing hydrogen into helium in its core Signup and view all the answers

How can we measure exoplanets' atmospheric properties?

By observing gaps, waves, and ripples in dusty gas disks around stars Signup and view all the answers

What is a common characteristic of comets in the Oort cloud?

They have random tilts and eccentricities. Signup and view all the answers

Why do asteroids beyond Jupiter's orbit appear to be few?

Ice forms outside the solar system, affecting asteroid distribution. Signup and view all the answers

What distinguishes the tail of a comet?

The plasma tail is driven by sunlight and solar wind. Signup and view all the answers

Where do most observed asteroids reside in the solar system?

In the asteroid belt between Mars and Jupiter. Signup and view all the answers

What stops Pluto from being classified as a planet?

Its small size compared to other celestial bodies. Signup and view all the answers

What plays a role in shaping comets' tails?

Plasma tail pushed by sunlight, dust tail pushed by photons. Signup and view all the answers