1) What is this? a) an egg made of plastic b) an egg made of glass c) a foam / styrofoam / polysterene egg 2) If you put the foam egg in the water, it... a) floats b) doesn't float 3) If you put the rubber in the water, it... a) floats b) doesn't float 4) Some objects float and other objects don't float. a) true b) false 5) Why do some objects float and other objects don't float? a) It depends on the dimensions and the weight. b) It depends on the material and the density. 6) Does plastic float? a) Yes, it does. b) No, it doesn't. 7) Do stones float? a) Yes, they do. b) No, they don't. 8) Does the ball float? a) Yes, it does. b) No, it doesn't. 9) Do shells float? a) Yes, they do. b) No, they don't. 10) Push the foam egg to the bottom of the glass. What happens? a) The foam egg doesn't come up to the surface. b) The foam egg comes up to the surface. 11) Why does the foam egg come to the surface? a) Because foam is lighter / less dense than water and floats. b) Because foam is heavy / denser than water and doesn't float. 12) When we push an object in the water... a) the water pushes it up. b) the water pushes it down. 13) What is the name of this push? a) Weight principle b) Archimede's principle 14) When the object is light / less dense... a) the push is stronger, so the object floats b) The push is weaker, so the object sinks 15) When the object is heavy / more dense... a) the push is weaker, so the object sinks. b) The push is stronger, so the object floats. 16) The ship a) floats b) sinks 17) The ship a) is less dense than water b) is denser than water

Experiment - Does it float? + Archimede's principle

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