Y8 Science Review of learning Term 3 2021

The upward force exerted by a fluid is called the...

• buoyancy force

• density force

• fluidity force

• normal force

Fluids flow

• only when warmed up.
• from regions of low pressure to regions of high pressure.
• until evenly spread out.
• from high to low pressure.

Tags

NGSS.MS-ESS2-5

If an object has a density of 3.6 g/mL and you put it into water (density =1.0g/mL,) will it sink or float?

• sink

• float

Which statements below is INCORRECT about liquids and gases?

• Liquids possess greater kinetic energy than gases.

• Gases have weak molecular force of attraction while liquids have a moderate force of attraction.

• Liquids have a definite size where gases can expand to fill any closed container.

• Gases are easily compressed where liquids are not.

Tags

NGSS.MS-PS3-1

What do we call the the amount of force exerted on a certain area?

• fluid
• pressure
• buoyant

This is a measurement of the amount of matter, or 'stuff', in an object or substance.

• volume
• density
• mass
• length

What is the formula for pressure?

• P=A/F

• P=FA

• P=F/A

To calculate pressure you need to know ...

• Force & Volume

• Density & Volume

• Power & Area

• Force & Area

The pressure resulting from a force of 50 N exerted over an area of 5 m² is

• 10 N
• 0.1 N
• 10 N/m2
• 0.1 Pa

A person wearing boots and a person wearing stilleto heels stand on a wooden floor. They both have the same weight. Which person exerts a greater pressure on the floor?

• boots because they have a larger surface area

• stiletto heels because they have a larger surface area

• boots because they have a smaller surface area

• stiletto heels boots because they have a smaller surface area