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Planets

Planets Lesson - Elementary Reading Lessons & Tests - My Schoolhouse - Online Learning
 

The Planets

  The Sun is at the center of the planets. Close to it are the inner planets - Mercury, Venus, Earth and Mars.

  Mercury the planet closest to the Sun, is a cratered rock not much bigger than our Moon.  It is incredibly hot and unable to support any kind of life.  The atmosphere contains sodium and potassium.

  Venus is the next planet from the Sun and is about the same size as the Earth.  The atmosphere is made up of mainly carbon dioxide.  The surface temperature can be as high as 480 degrees Celsius.  There is no life of any kind on the planet Venus.

Earth

  Earth is the only planet that has the conditions to support life.  The surface is neither very cold nor very hot.  Water can exist in all its three forms - as gas, liquid, and solid.  These conditions allow plants and animals to live and reproduce.

  Mars, the first planet beyond Earth is smaller than the Earth.  The atmosphere is made up mostly of carbon dioxide.  Water exists on this planet, but only in the form of ice.  The whole planet is a red, lifeless desert.

  The outer planets, Jupiter, Saturn, Uranus, and Neptune are called the gas giants.  They are much larger than the Earth. The outermost planet, Pluto, is no longer classified as a planet.  It is now called a dwarf Planet.  It is so far away, it is a mystery.

  

Answer the questions below

 

How many planets are there?

six

seven

eight

 

The is at the center of the planets. 

 

The dwarf planet, , is a mystery.

 

is the planet closest to the Sun.

 

The planet is about the same size as the Earth.

 

Water exists on the planet Mars in the form of .

 
Water exists on the planet in three forms.

 
Which planet is a red, lifeless desert?

Mars

Mercury

Venus

 
Which planets are called the gas giants?

Mercury, Venus, Earth, Mars

Jupiter, Saturn, Uranus, Neptune

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


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