Question

The photograph shows an experiment on water pressure. Water squirts out faster from the hole at the bottom of the bottle than at the top. Use the idea of pressure to explain why.

A. The pressure at the bottom is higher due to the increased height of water.
B. The pressure at the top is higher due to the force applied to the water.
C. The pressure at the bottom is lower due to the weight of water above.
D. The pressure at the top is lower due to the reduced depth of water.

Answer 1

Water squirts out faster from the hole at the bottom of the bottle than the top because the pressure is higher at the bottom, as pressure in a fluid increases with depth.

Step-by-step explanation:

The photograph of the experiment showing water squirting out of a bottle demonstrates a fundamental principle of fluid mechanics. The correct answer to why water squirts out faster from the bottom hole than the top is that the pressure at the bottom is higher due to the increased height of water above it. This is based on the concept that pressure in a fluid increases with depth, due to the weight of the fluid providing a greater downward force at deeper points within the fluid. This means that at greater depths, there is a higher pressure, and hence when there is a hole, the water squirts out with more force compared to a higher point in the bottle with less water above and therefore less pressure.

Answer 2

In this experiment, `the pressure at the bottom is lower due to the weight of water above`.

The correct answer is C.

Step-by-step explanation:

When we talk about pressure in a fluid, such as water, it is related to the force exerted by the fluid on a given area. The pressure increases with depth in a fluid because the weight of the fluid above increases as we go deeper.

In this experiment with the water bottle, the water at the bottom of the bottle has more water above it compared to the water at the top. Therefore, the water at the bottom experiences a higher weight, resulting in a higher pressure.

Now, when the water is forced to escape through the holes in the bottle, the water at the bottom, which has a higher pressure, will exert a greater force on the water particles. This force will cause the water to squirt out faster from the bottom hole compared to the top hole.

On the other hand, the water at the top of the bottle has less water above it, resulting in a lower weight and lower pressure. As a result, the water at the top will have a lower force exerted on it, causing it to squirt out slower from the top hole.

Therefore, due to the weight of the water above, the pressure at the bottom of the bottle is lower, and hence, water squirts out faster from the bottom hole.

The answer is option ⇒C