"Prove that the Earth is Rotating" Earth's Movement PPT Courseware 2

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"Prove that the Earth is Rotating" Earth's Movement PPT Courseware 2

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1. The main contents of geocentric theory:

1. The earth is a sphere.

2. The earth is at the center of the universe and is stationary.

3. All the sun, moon and stars revolve around the earth and make a circular motion every day.

2. The main contents of heliocentric theory:

1. Think that the earth is spherical.

2. The earth is in motion and rotates once every 24 hours.

3. The sun is stationary and is at the center of the universe. The earth and other planets all make circular motions around the sun.

Experimental steps:

1. Place the turntable upright and flat

2. After putting it up, adjust it properly and don’t let it shake.

4. After each experiment is completed, you must return to the resting position and continue with the next experiment.

5. Rotate the chassis smoothly and slowly to reduce the influence of external forces on the swing direction.

6. Do not blow into the pendulum or touch it.

Group division:

1. Since the swing range is relatively large and the range of the rotating swing frame is larger, it is recommended that the team members stand on both sides of the back of the swing frame. To avoid touching it.

2. One person pulls the pendulum, one person holds down the bottom wheel, another person turns the upper wheel, and another person records,

3. Let’s all observe whether the direction of the pendulum changes.

Thinking: If a huge pendulum is erected on the surface of the earth, what will happen when the earth's disk rotates (rotates)?

On the other hand, if there really is such a pendulum and the direction of the swing shifts, what does it mean?

Discussion: What’s so special about Foucault’s Pendulum?

What happens when Foucault's pendulum swings?

Why does it prove that the earth is rotating?

A phenomenon that occurs due to the rotation of the Earth.

Deviation of the river: For a river flowing from north to south, the river bank on the right is washed more seriously by the river water.

Deep well measurement method: an object is dropped from the center of the well and always collides with the east wall of the well at a certain depth.

Other ways to prove that the Earth is spinning

(1) Exploration well measurement method

The earth is constantly rotating. Therefore, since the rotation speed increases with height, an object falling from a high place must have a higher eastward rotation speed during its fall, so it must fall in the east. Location In order to confirm this, someone once conducted experiments in very deep mines.

The experimental result is that objects falling from the center of the wellhead always collide with the east wall of the mine at a certain depth. This confirms the rotation of the earth from another aspect.

(2) Cannonball method

The earth is constantly rotating, so objects moving horizontally on the ground must always move to the right (Northern Hemisphere) or to the left (Southern Hemisphere) relative to each other.

According to this view, people analyzed the direction of movement of the fired cannonball, and the results confirmed the correctness of the appealed view.

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"Prove that the Earth is Rotating" Earth's Movement PPT download:

"Proving that the Earth is Rotating" Earth's Movement PPT Download Part One: Exploring New Knowledge Characteristics of the Pendulum Review: What are the characteristics of the pendulum? The pendulum has the characteristic of keeping its swing direction unchanged. Foucault was a French physicist. When he was studying the laws of the pendulum at home...

"Proof that the Earth is Rotating" Earth's Movement PPT:

"Proving that the Earth is Rotating" PPT on the Movement of the Earth Part One: Characteristics of the Pendulum A French physicist named Foucault (18191868) accidentally discovered when studying the laws of the pendulum at home: Put the pendulum and its bracket on On a circular chassis, swing the pendulum...

"Prove that the Earth is Rotating" Earth's Movement PPT Courseware 3:

"Prove that the Earth is Rotating" Earth's Movement PPT Courseware 3 Do you understand our home earth? See who knows more? It was not until the 16th century that Copernicus, the founder of the heliocentric theory, proposed the theory of the earth's rotation. Experimental steps: 1. Place the turntable upright and flat 2..

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Update Time: 2024-10-23

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