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Elizabeth
Afiqah
Shianne Han
Jara
Ning

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Cheyenne
Iman
Sneha
Yoo jin
jaymyn

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Sarah
Selina
Jamie
Valerie
Arielle

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Nicole, Lichelle, Sowndharya, Emily and Audrey

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Diya
Li Yi
Anne
Naajihah

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Kirsten
Saanvi
Nadya
Wei Ning
Crystal

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Cayla, Anaya, Sharon, Harika, Kate

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Nidhi
Rachelle
Jessie
Jia Hui
Anwesha

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We saw:
-the  ball of plasticine sinks when put in water
-the ping pong ball floats when put in water

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Mr lim dropped the ping pong ball into a container of water. The ping pong ball floated. But when he dropped a lump of plasticine about the same size of the ping ping ball, the plasticine ball sunked and bubbles floated to the top.

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I can see Mr Lim putting a ping pong ball and a ball of plasticine into the water one by one. I then can see a floating ping pong ball and a sinking plasticine that is of the same size and shape.

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The ping pong ball floated in the water and the plasticine ball sank when it was dropped into the container filled with water.

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The ping pong ball floats on water while the plasticine sinks in water

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The ping pong ball floated on the surface of the water while the plasticine sank to the bottom

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We saw a ping pong ball float and a plasticine ball sink

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The ping pong ball floated on the water while the ball of plasticine, which was about the same size as the ping pong ball,sank.

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The ping pong ball floats because it was filled with air and has lesser amt of density of the water. The plasticine sank because it has a higher amt of density than the water. Although they had the same size and shape, one float and one sank.

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we think that...
-the ball of plasticine has higher density compared to the ping pong ball
-the air in the ping pong ball caused the ping pong ball to float

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We think that the plasticine ball has more density than the water therefore it sinks but the ping pong ball has lesser density than the water as there is air inside the ping pong ball thus it floats.

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The ping pong ball has lower density than the water and thus it floats on water. The plasticine has higher density than the water and thus it sinks in water.

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The ping pong ball has a lower density than the lump of plasticine

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The ping pong ball has a lower amount of density, so it on the surface of the water.But the plasticine has a higher amount of density so it sank. They both have different mass and density.

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We think:
- The plasticine has more density than the ping pong ball
- There is more air trapped in the ping pong ball than the plasticine

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The ping pong ball is less dense than water while the ball of plasticine is denser than water.

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How does density affect the position of the object in the water?

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-Why does an object with a higher density sink in water?
-What determines the density of the object?
-Why does the plasticine ball have a higher density than the ping pong ball?

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Our questions:
-Does the size of the ping pong ball or plasticine affects its ability to float or sink in water?
-How does the density affects how it sinks or floats on/in water?

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•Why does one of them float while the other sinks when they are of the same shape and size?
•How does the density of the objects affect their ability to sink and float in water

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Does density affect volume or vice versa?
Why does an object with a higher density than the water sink?

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we wonder why...
-why can’t the plasticine float when it’s rolled into a ball and put into water but it can float when it is rolled into a boat and put into water?
-why do people make ping pong balls filled with air?

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If the ball of plasticine was dropped into the ocean,would it sink all the way to the bottom of the ocean?

Did the shapes of the plasticine ball and the ping pong ball affect their density?

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Why do objects with lower density float?????????????

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Flatten the plasticine as much as you can and make it into the shape of a bowl.

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Shape the plasticine into a bowl, such that the plasticine is hollow in the centre.

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We have to make the plasticine thin

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We used a “rolling pin” to flatten
we shaped the plasticine into a boat so that water cannot flow into the “boat”

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We shaped the plasticine into the shape of a bowl

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1. Flatten the plasticine.
2. Mould the plasticine into the shape of a bowl.
3. Make sure water cannot seep onto the plasticine.

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1.Flatten the plasticine.
2.Mold it into a bowl.

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Make the plasticine into a shape of a bowl.

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By flattening it, it increases surface area and thus there will be less density at each amount of space. By making it into a bowl it makes sure the plasticine is balanced.

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The water in the container has more density than the plasticine and so the plasticine floats.

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when we flattened it, the mass was distributed evenly and we made sure water would not be able to flow onto the plasticine as the water would add additional mass onto the plasticine ,causing it to sink

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It increases surface area thus leading to lower density. Lower density would allow it to float on water.

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When the plasticine is flattened,its density decreases and the rounded edges prevent water from seeping onto it,thus making it float on water.

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As compared to the water the “cup of plasticine has lower density thus it floats.

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The plasticine floated because the density decreased as the volume of the plasticine increased but the mass remained the same