Floating and Sinking

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  • Floating and Sinking

    1. 1. Floating and
    2. 2. What does floating and sinking mean? I think floating means that an item is on or under the surface. I think sinking means when an item sinks all the way to the bottom.
    3. 3. Questions
    4. 4. Questions • How does an item float ? • How does it sink? • Does density make objects float?
    5. 5. • Density is in every type of object that has any kind of material. High density objects will sink and low density object will float.
    6. 6. Does density have the ability to make an item float? • Density is in every type of object that has any kind of material. High density objects will sink and low density object will float.
    7. 7. Diagram
    8. 8. Diagram When we pushed the balloon under the water, the water pushed back. This is called upthrust .
    9. 9. Diagram The water rose when we pushed the balloo down. When we pushed the balloon under the water, the water pushed back. This is called upthrust .
    10. 10. Diagram The water rose when we pushed the balloo down. When we pushed the balloon under the water, the water pushed back. This is called upthrust . As we pushed the balloon under the water, some of the water pushed out of the way. The water levels rose. This is called displacement
    11. 11. Diagram The water rose when we pushed the balloo down. The balloon floats When we pushed the on the water balloon under the water, because it is filled the water pushed back. This is called upthrust . with air. As we pushed the balloon under the water, some of the water pushed out of the way. The water levels rose. This is called displacement
    12. 12. • First we cracked the egg and tipped the yolk out. Then we tipped the first egg white in to see if it floated. It didn’t. Then you whisk the the other egg white and pour it in the water. It will float because we have added air.
    13. 13. Trapped air • First we cracked the egg and tipped the yolk out. Then we tipped the first egg white in to see if it floated. It didn’t. Then you whisk the the other egg white and pour it in the water. It will float because we have added air.
    14. 14. Trapped air • First we cracked the egg and tipped the yolk out. Then we tipped the first egg white in to see if it floated. It didn’t. Then you whisk the the other egg white and pour it in the water. It will float because we have added air.
    15. 15. Changing an object’s shape If you change an object’s shape and make it hollow it will float. A flat dense object will sink, but if it’s flat it will actually sink.
    16. 16. Credits Thanks to Mrs van Zyl I

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