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Planets

General knowlege about planets. 10 Questions.

 
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happybee
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1

_____is the fifth planet from the Sun and the largest planet within the Solar System.

  • Mars
  • Jupiter
  • Venus

2

The Earth is composed mostly of which element?

  • calcium
  • sulfur
  • iron

3

In 2:56 UTC July 21, 1969, the first man to set his foot on the moon spoke the famous words "That's one small step for [a] man, one giant leap for mankind."

  • Buzz Aldrin
  • Neil Alden Armstrong
  • Alan Shepard

4

The age of the Earth is around ____.

  • 4.54 million years
  • 4.54 billion years
  • 4.54 trillion years

5

The Sun is composed primarily of the chemical elements _____and ______; they account for 74.9% and 23.8% of the mass of the Sun in the photosphere, respectively.

  • oxygen and helium
  • oxygen and iron
  • hydrogen and helium

6

The first planet discovered with a telescope.

  • Jupiter
  • Mars
  • Uranus

7

This planet is the innermost and smallest planet in the Solar System, orbiting the Sun once every 87.969 Earth days.

  • Mercury
  • Pluto
  • Saturn

8

Venus has the densest atmosphere of all the terrestrial planets in our solar system, consisting mostly of ____.

  • Iron
  • Hydrogen
  • Carbon dioxide

9

____ are gases in an atmosphere that absorb and emit radiation within the thermal infrared range.

  • Helium gases
  • Red gases
  • Greenhouse gases

10

Air is mainly composed of ____, ____ , ___ which together constitute the major gases of the atmosphere.

  • oxygen, helium, carbon dioxide
  • oxygen, carbon dioxide, iron
  • nitrogen, oxygen, and argon

 

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