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Authoritative PPT Summary
Qingdao version of third grade science, interesting floating and sinking phenomena PPT
Part One: Activities
Activity one:
(1) Experimental materials: sink, hook code, rubber, etc.
Guess which objects float in the water and which objects sink?
Experimental tips:
1. During the experiment, be careful to handle the experimental materials with care and try not to get water on the table.
2. The team should work together in unity, have a clear division of labor, and make experimental records in a timely manner
Activity 2:
Gently press the floating object with your hands.
How do your hands feel?
An object in water is lifted upward by the force of the water.
buoyancy
Interesting floating and sinking phenomenon PPT, part 2 content: steps
Steps in activity three:
1. Tie the hook code with a rubber band, hang it vertically in the air, and measure the length of the rubber band with a ruler;
2. Then hang the hook code vertically in the water, and then use a ruler to measure the length of the rubber band;
3. Keep your eyes level during the entire process and record the experimental results in a timely manner.
4. Fill in the experimental report.
Interesting floating and sinking phenomenon PPT, the third part: exploring the principles of floating and sinking
Explore the principles of floating and sinking:
If the weight of an object is greater than the buoyant force, the object will sink; if the weight of the object is less than the buoyant force, the object will float.
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"Interesting Floating and Sinking Phenomenon" PPT courseware:
Qingdao version of third-grade science, first volume science, interesting floating and sinking phenomenon PPT courseware, the first part content: game game: cleverly take a table tennis ball. Place a table tennis ball in a transparent glass. It cannot be poured out, nor can it be picked up with hands or tools. , is there any easy way...