General knowlege about planets. 10 Questions.
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_____is the fifth planet from the Sun and the largest planet within the Solar System.
The Earth is composed mostly of which element?
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."
Neil Alden Armstrong
The age of the Earth is around ____.
4.54 million years
4.54 billion years
4.54 trillion years
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
The first planet discovered with a telescope.
This planet is the innermost and smallest planet in the Solar System, orbiting the Sun once every 87.969 Earth days.
Venus has the densest atmosphere of all the terrestrial planets in our solar system, consisting mostly of ____.
____ are gases in an atmosphere that absorb and emit radiation within the thermal infrared range.
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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