8P Pressure revision

When you increase your depth under water, the water pressure on your body

• increases

• decreases

• stays the same

Diagram shows the design of a dam. Why does the thickness of the dam increase with its depth?

• The design of this structure is stronger.

• Water pressure increases with depth.

• The cost of construction is lower.

• Water pressure acts uniformly in all directions.

Tags

NGSS.MS-ETS1-1

Apart from N/cm² and N/m², what is the unit of measurement for pressure?

• pascal

• grams

• millitres

• meters

Watch the tyres of tractor rolling. Rear tyres are broader / have a larger surface area because

• It looks good.

• Broader tyres lessen the Force required to drive the tractor.

• Broader tyres have a lower pressure on ground.

• Broader tyres reduce friction on ground.

Which sentence is the MOST RIGHT fit for this image?

• High heels look better than flat shoes.

• Pressure distribution is higher for flat shoes.

• In muddy area, it's not a good idea to wear heels.

• Less the area, less is the pressure. So heels create less pressure.

In the image which hole will allow the water to travel furthest?

• A

• B

• C

What is the pressure equation?

• Pressure = Force x Area

• Pressure = Force ÷ Area

• Pressure = Area ÷ Force

• Pressure = Area² ÷ Force

Which property do gasses have that liquid do not?

• Gasses can be compressed

• Gasses can flow

• Gasses can gain energy

• Gasses can change shape

If a piston has a face of 2cm² and a force of 5N is applied what is the total pressure?

• 2.5N/cm²

• 0.4N/cm²

• 10N/cm²

• 10N/m²

If a pressure of 30N/cm² is applied to a piston with an area of 15cm² what is the total force?

• 450N

• 2cm²

• 0.5N

• 45N