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

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

Part One: 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 one by one, and record their sinking and floating conditions.

Think about it, is there any relationship between the ups and downs of an object and its size?

Arrange the above seven objects in order of importance, put them into the water tank one by one, and record their sinking and floating conditions.

Think about it, does the ups and downs of an object have anything to do with its weight?

When we compare these objects, why can't we see the relationship between their weight, size, and sinking and floating?

When encountering this situation, scientists often use the method of controlling other factors unchanged to study whether a certain factor has an effect on the object.

What factors are related to ups and downs? PPT, Part 2: Controlling other factors for research

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

Think about it, does the ups and downs of an object have anything to do with its weight?

Objects of the same volume but light weight float.

Arrange a group of cubes of the same weight on the table in order of volume, speculate on their sinking and floating in the water, and then put them into the water for observation.

Think about it, is there any relationship between the ups and downs of an object and its size?

Objects with the same weight and larger volume float up.

What factors are related to ups and downs PPT, part 3: Continue research with small bottles

1. Find an empty bottle, cover it and let it float on the water.

2. Add water to the empty bottle again and again, and study how much water you add to make the small bottle sink into the water.

What factors are related to ups and downs PPT, part 4 content: thinking and discussion

What are the rules for objects made of different materials to sink and float in water?

If objects made of different materials have the same volume, heavy objects will sink easily; if they have the same mass, small objects will sink easily.

Can you use what you've learned to explain the mystery of the sinking and sinking of submarines?

Submarines can sail both on the surface and underwater. Submarines have a large ballast tank. Open the water inlet pipe, fill the ballast tank with seawater, and the submarine will dive. Open the air inlet pipe, use compressed air to squeeze the seawater out of the ballast tank, and the submarine will begin to float.

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

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Update Time: 2024-11-22

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