Flashcard 1: Solar System/ Helio & Geocentric

Front

What is the Geocentric Model?

Back

The Geocentric Model is an astronomical theory that places Earth at the center of the universe, with all other celestial bodies orbiting around it.

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What is redshift?

Back

Redshift is the phenomenon where light from an object moving away from an observer shifts to longer wavelengths, making it appear redder.

Front

Why is it important for scientists to keep learning about the universe?

Back

It helps them make new discoveries and understand the world better.

Front

What does the structure of the solar system include?

Back

The solar system consists of the Sun, planets, moons, asteroids, and comets.

Front

What is a singularity in the context of the universe?

Back

A singularity is a tiny, infinitely dense point where the universe began before the Big Bang.

Front

What is the Big Bang Theory?

Back

The Big Bang Theory is the leading explanation about how the universe began, stating that it started from a singularity and has been expanding ever since.

Front

What are asteroids?

Back

Asteroids are small rocky bodies that orbit the Sun, primarily found in the asteroid belt between Mars and Jupiter.

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What is a comet?

Back

A comet is a small celestial body made of ice, dust, and rocky material that, when passing close to the Sun, develops a glowing coma and tail.

Front

What is the difference between a planet and a moon?

Back

A planet is a celestial body that orbits a star, while a moon is a natural satellite that orbits a planet.

Front

What is the role of gravity in the solar system?

Back

Gravity is the force that keeps planets in orbit around the Sun and moons in orbit around planets.