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Part 1: Same Level – Same Pressure

Materials:

A clean plastic bottle

Water

A pin or compass

Marker

Tray or sink to catch water

Steps:

1. Fill the bottle completely with water.

2. Use a marker to mark 3 holes at the same height around the bottle (like the 3 sides of a triangle).

3. Carefully poke the holes (ask for help if needed).

4. Observe how water comes out from each hole.

What to post on Padlet:

📸 A photo/video of your experiment.

✍️ Your observation: “All streams of water moved ___ because...”

🧠 Your conclusion: “This proves that at the same level, pressure is...”

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Part 2: Pressure Increases with Depth

Steps:

1. Take a new bottle.

2. Mark 3 holes at different heights (top, middle, bottom).

3. Poke the holes and observe the water streams.

What to post on Padlet:

📸 A photo/video of this setup.

✍️ Observation: “The stream from the __ hole reached farther because...”

🧠 Conclusion: “This shows that pressure in a liquid increases with...”

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The pressure in a liquid increases with depth This is because the deeper you go the move liquid is above you and the weight of this liquid increases the pressure decreases.

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The pressure in a liquid increases with a depth. This is because the deeper you go, the more liquid is above you and the weight of these liquid increases the pressure.

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The pressure in a liquid increase with depth.This is because the deeper you go, the more liquid is above you and weight of this liquid increase the pressure

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The top hole has less water above it → so water comes out slowly and short.

The middle hole has more water → so water comes out a bit stronger.

The bottom hole has the most water above it → so water comes out fast and goes far.

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The bottle has 3 hole . 1st hole is at the top ,so the pressure of water is low. 2nd hole is at the middle hole is cover with water ,the pressure is fast.

At the depth the pressure of water is more. Therefore, liquid pressure increases the depth.

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The water from hole 3 will go the farthest because it is at the greatest depth, and pressure is highest at the bottom.

This concept shows the relationship between pressure and depth in liquids.