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Volume - Science - Educatall

Globule wonders...Globule

Can two objects occupy the same space?


Experiment: Volume


Hypotheses: Ask children what they think will happen to the water level if we add pebbles to a glass that is half full.



    • • One clear drinking glass per child
    • • Pebbles
    • • Water
    • • A washable marker for each child



    1. 1. Pour water in your glass until it is half full.
    1. 2. Use the marker to draw a line on the glass to indicate the water level.
    1. 3. Gently add one pebble at a time to the glass. Watch the water level.


Explanation: The space an object occupies is called volume. Originally, the water occupied a certain volume. This volume was indicated by the line you drew on your glass. When you added pebbles, the water level increased since the water and the pebbles cannot occupy the same space. Since the pebbles are heavier than the water, they fell to the bottom of the glass and pushed the water upwards. A greater volume was occupied by the water and the pebbles. This explains why the water level is higher than at the beginning of the experiment.



Angélique Boissonneault

has a Bachelor's Degree in Biological Science. She has worked in a laboratory and tested her knowledge. She has taught Math, Chemistry, and Physics. She has also developed a simplistic and innovative approach designed to introduce young children to scientific experiments, old and new. She created her friend Globule. This character is sometimes red, and sometimes white. He guides little ones through their scientific experiments and discoveries. It is clear to see Angélique is passionate about children and science. Globule's Approach.


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