Astronomy Quiz: Solar System Basics
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Questions and Answers

Which model of the universe places the Sun at the center?

  • Geo-centric Model
  • Universal Model
  • Helio-centric Model (correct)
  • Earth-centric Model

What is the primary composition of asteroids?

  • Dust and ice
  • Organic compounds
  • Gases and liquids
  • Iron and silicon or other metals (correct)

Which planet has the largest diameter?

  • Venus
  • Jupiter (correct)
  • Earth
  • Saturn

Meteoroids are defined as:

<p>Fragments from the asteroid belt (A)</p> Signup and view all the answers

Who proposed the Geo-centric Model of the universe?

<p>Aristotle (A)</p> Signup and view all the answers

Where are asteroids primarily found in the Solar System?

<p>In the asteroid belt between Mars and Jupiter (B)</p> Signup and view all the answers

Which statement about the composition of asteroids is true?

<p>Almost all asteroids contain nickel and iron (C)</p> Signup and view all the answers

What determines the color of a star?

<p>The surface temperature of the star (D)</p> Signup and view all the answers

How is the altitude of an object in the sky measured?

<p>From the horizon at $0^ heta$ to straight up at $90^ heta$ (D)</p> Signup and view all the answers

Which of the following descriptions is true about the distribution of visible matter in space?

<p>Most of the visible matter in space is composed of stars (A)</p> Signup and view all the answers

Flashcards

Geo-centric Model

An incorrect model of the solar system that places Earth at the center, with the Sun revolving around it.

Helio-centric Model

The correct model of the solar system that places the Sun at the center, with all planets orbiting it.

Asteroids

Rocky debris leftover from the early solar system, mainly composed of iron, silicon, and other metals.

Comets

Icy objects from the asteroid belt that leave trails of dust and gas as they orbit the Sun.

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Meteoroids, Meteors, and Meteorites

Meteoroids are small fragments of asteroids. When they enter Earth's atmosphere, they become meteors and create bright streaks of light. If they survive the atmospheric entry and hit the Earth's surface, they are called meteorites.

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Kuiper Belt and Oort Cloud

Regions at the edge of the solar system where many asteroids are found. The Kuiper belt is closer to the Sun than the Oort cloud.

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Meteoroid

A small piece of rock or dust that travels through space. Smaller than an asteroid.

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Star Color and Temperature

A star's color indicates its surface temperature. Hotter stars appear blue, while cooler stars appear red.

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Altitude

The angle between an object in the sky and the horizon. Measured in degrees from 0° at the horizon to 90° straight up.

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