Oreo cookie moon phases : Fizzics Education


Oreo cookie moon phases

Oreo cookie moon phases

Follow FizzicsEd 150 Science Experiments:

You will need:

Oreo cookies (or any other cream-filled chocolate cookies you have on hand). We used some generic ones in this version.

A blunt table knife (aka butter knife)

A paper plate

A pen

One green and one blue texta


Oreao packet, a pen, table knoie and chocolate biscuits on a paper plate
1 Drawing a stylised Earth onto a paper plate

Draw your own version of Earth on the paper plate! You can be as imaginative as you want 🙂

2 A boy splitting a chocolate cookie in half

Carefully split each cream-filled chocolate cookie in half.

3 A table knife scraoing away some cream filling from a chocolate biscuit

Use a blunt table knife to scrape away the cream filling on each biscuit. Try to avoid touching the cream filling that is to stay, otherwise, it can be hard to make it smooth again.

4 Scraping away cream filling from several chocolate biscuits using a table knifea

Continue to scrape away the cream filling from the biscuit halves until you have the following 8 phases of the moon represented and in order around the plate:

    • New moon.
    • Waxing Crescent.
    • First Quarter.
    • Waxing Gibbous.
    • Full moon.
    • Waning Gibbous.
    • Third Quarter.
    • Waning Crescent.
5 Writing the moon phases around the edge of paper plate with a pen

Write each moon phase in order around the edge of the plate. Add arrows between each cookie and make sure that cookie represents the right moon phase.

6 8 moon phases represented by chocolate biscuits around the edge of a paper plate

All finished! Time to eat your moon phases too 🙂

7 A television screen showing a distance educator running science experiment with a bell jar, vacuum pump and a cup of water. There is an inset of a remote class on the screen and a video conference camera on top of the television.
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More information

Weirdly, it takes 27 days, 7 hours & 43 minutes for the moon to complete an orbit around the Earth however the cycle of the 8 moon phases take 29.5 days due to changes in the relative position of the Sun, Moon and the Earth.

New Moon

  • Occurs when the moon is between the Earth and the Sun, making the illuminated side of the moon face away from us

Waxing Crescent

  • The beginnings of the moon to have its surface illuminated where we can see it.

First Quarter

  • Half of the moon is illuminated as the moon continues it become more lit up  bu the Sun (on the way to full moon).

Waxing Gibbous

  • The moon is almost now completely illuminated and we’re on our way towards full moon

Full Moon

  • Occurs when the Earth is between the moon and the Sun, so that when we look at the moon its entire face is illuminated.

Waning Gibbous

  • The moon begins to become less illuminated as we travel towards new moon.

Third Quarter

  • Half of the moon is now in darkness, due to the position of the Sun causing shadowing on half of the moon,

Waning Crescent

  • Almost the whole surface of the moon is now in darkness, as the illumination is nearly all on the side of the moon that we can’t see. Next step, back to new moon!

You can model the phases of the moon with a lamp, ball and Earth model.

A model of the Earth illuminated by a lamp. A hand is holding a ping pong ball on top of a nail inbetween.

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