"What factors are related to sinking and floating" PPT download of sinking and floating

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"What factors are related to sinking and floating" PPT download of sinking and floating

Part One Content: New Lesson Learning

Analyze the laws of sinking and floating of objects in water

the rise and fall of objects

Carrots Styrofoam blocks Empty bottles with lids

Small stones, candles, erasers, paper clips

Therefore, it is necessary to use the method of controlling other factors unchanged to study whether a certain factor has an effect on the object.

Controlling other factors for research

Arrange a group of spheres of the same size on the table in order of weight, speculate on their ups and downs, and then put them into the water to observe.

in conclusion:

When objects made of different materials have the same volume, light objects tend to float and heavy objects tend to sink.

What factors are related to ups and downs PPT, part 2: expansion and extension

In 245 BC, Archimedes discovered the principle of buoyancy. The definition of buoyancy is F float = G displacement, that is, the buoyancy force of water on an object is equal to the weight of the water displaced by the object.

During the American Revolution, the submarine Turtle was used unsuccessfully to attack the enemy. Human-powered submarines were not very efficient, and the handwheels did not provide enough power. Engineers also found it difficult to seal the propeller entrance and exit to make it watertight. It was not until efficient gasoline engines were developed that submarines were actually put into use.

What factors are related to ups and downs PPT, part three content: Class summary

The sinking and floating of an object is related to its own weight and volume. If the objects have the same volume, heavy objects will sink easily and light objects will float easily; if the objects have the same weight, small objects will sink easily and large objects will float easily.

What factors are related to ups and downs PPT, Part 4: Classroom training

1. Fill in the blanks

1. Use the ( ) method to study the factors that cause objects to sink and float.

2. The empty small bottle is ( ). The process of adding water to the bottle gradually changes the ( ) of the bottle, and ultimately changes the ups and downs of the small bottle.

3. ( ) sinks and floats by changing its own weight.

2. Judgment questions

1. The sinking and floating of objects made of different materials in water has nothing to do with volume and weight. ( )

2. Objects made of different materials sink and float irregularly in water. ( )

3. A piece of paper floated when it was first placed on the water, and then slowly sank to the bottom. ( )

What factors are related to ups and downs PPT, Part 5: Homework

Go home and collect relevant information about submarines.

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For more information about the PPT courseware "Sinking and Floating, What Factors Are Related to Sinking and Floating", please click on the PPT tab of "Sinking and Floating, What Factors Are Related to Sinking and Floating".

"What factors are related to sinking and floating" PPT about sinking and floating:

"What Factors Are Related to Sinking and Floating" PPT on Sinking and Floating Part 1: Analyze the rules of sinking and floating of objects in water. Arrange the above seven objects in order of size, put them into the water tank in turn, and record their sinking and floating conditions. Think about the ups and downs of an object and its size...

"What factors are related to sinking and floating" PPT courseware of sinking and floating 3:

"What factors are related to sinking and floating?" Sinking and Floating PPT Courseware 3 Arrange seven objects in order of size, and then mark whether they sink or float in the water. Think about it, is there any relationship between the ups and downs of an object and its size?

Arrange the seven objects in order of importance and label them..

"What factors are related to sinking and floating" PPT courseware of sinking and floating 2:

"What factors are related to sinking and floating" PPT courseware of sinking and floating 2 Thinking? The sinking and floating of objects made of the same material in water has nothing to do with their weight and volume. So, the sinking and floating of objects made of different materials in water depends on their weight and volume...

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Update Time: 2024-06-30

This template belongs to science courseware Fifth Grade Science Volume 2, Textbook Edition industry PPT template

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