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Planets

Lesson 2

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The Planets

MERCURY

VENUS

EARTH

MARS

JUPITER

SATURN

URANUS

NEPTUNE

Inner Planets - Terrestrial

Outer Planets - Gaseous

Formed by dirt, rock and other space debris

Formed by various gases

There is a natural dividing line between the inner and outer planets called the “asteroid belt” which is a line of thousands of asteroids being held in orbit by the sun’s gravitational pull.

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Remembering The Planets

MERCURY

VENUS

EARTH

MARS

JUPITER

SATURN

URANUS

NEPTUNE

Come up with a mnemonic to remember the names �of all the planets in order

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Remembering The Planets

MERCURY

VENUS

EARTH

MARS

JUPITER

SATURN

URANUS

NEPTUNE

MY

VERY

EXCELLENT

MOTHER

JUST

SERVED

US

NACHOS

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Asteroid Belt

  • There is a natural dividing line between the inner and outer planets called the “asteroid belt”
    • It is a line of thousands of asteroids being held in orbit by the sun’s gravitational pull.

Remembering The Planets

Inner Planets - Terrestrial

Outer Planets - Gaseous

MRSTAV

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Asteroid Belt

MRSTAV

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Asteroid Belt

MRSTAV

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Planets in relation to the Sun

MRSTAV

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Planet Size

proportionate sizes of the planets

OUTER

PLANETS

INNER

PLANETS

MRSTAV

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Planet Size

Largest Planets 🡪 Smallest Planets

MERCURY

VENUS

EARTH

MARS

JUPITER

SATURN

URANUS

NEPTUNE

MERCURY

VENUS

EARTH

MARS

JUPITER

SATURN

URANUS

NEPTUNE

MRSTAV

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But what about�PLUTO?

Is it… or isn’t it?

MRSTAV

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Pluto – IS IT A PLANET?!

  • It used to be considered our last outer planet
    • It was not a gaseous planet like the other outer planets
    • It was more like a ball of ice because of its great distance from the sun

MRSTAV

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Pluto - Dwarf Planets

  • A dwarf planet is a celestial body that orbits the sun but cannot clear its path within the orbit
    • meaning there are other objects that stand in the way of its track
  • Scientist believe that there may be hundreds of dwarf planets that have not yet been discovered.

MRSTAV

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Pluto - Dwarf Planets

In 2003, Pluto was renamed a “dwarf” planet because of its small size and distance from the sun

​

  • Other dwarf planets in our solar system are:
    • Ceres
    • Eris
    • Makemake
    • Haumea

MRSTAV

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What we Know about Pluto

MRSTAV

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EARTH

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MRSTAV

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Earth

​

The Earth has 4 layers:

  1. Inner Core
  2. Outer Core
  3. Mantle
  4. Crust

​

INNER

CORE

OUTER

CORE

MANTLE

CRUST

INNER CORE

OUTER CORE

MANTLE

CRUST

MRSTAV

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Earth

MRSTAV

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Inner Planet Video Links

Mercury Venus Earth Mars

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Outer Planet Video Links

Jupiter Saturn Uranus Neptune