Unit A Review - FLUIDS

What is a fluid

• a firm and stable shape

• a substance that has no fixed shape and yields easily to external pressure

• liquids

• gases

Which of these are classified as fluids?

• solids

• liquids

• gases

Which of these are fluids?

• sand

• oxygen

• water

• rocks

What is viscosity?

• A fluid's resistance to flow

• A fluid's colour

• A fluid's temperature

• How quickly a fluid changes state

Which of these factors affect viscosity?

• volume

• mass

• colour

• temperature

Tags

NGSS.MS-PS1-4

What is flow rate?

• speed of a fish swimming across a lake

• speed which a fluid moves from one point to another

• speed of an object moving in a fluid

Mass divided by volume is

• buoyancy

• elasticity

• density

• force

What is the density of a substance that has a mass of 30g and a volume of 6ml?

• 180 g/ml

• 36 g/ml

• 24 g/ml

• 5 g/ml

An object with which of the following densities will float on water?

• 1.03 g/ml

• 1.001 g/ml

• 0.95 g/ml

• 2.3 g/ml

Why do some substances float on water?

• because they are less dense than water

• because they are more dense than water

• because they are warmer than water

• because they are cooler than water