Viscosity, Density, Buoyancy, and Pressure

Matter that takes the shape of its container is known as a

• solid

• gas

• liquid

• both b and c

Using the particle model of matter, viscosity is described as

• the larger the molecules, the higher the viscosity

• the greater the distance between the particles, the greater the viscosity

• the greater the friction between particles, the greater the viscosity

• the faster the particles are moving, the greater the viscosity

The ease with which fluids flow may be described as

• viscosity

• colloid

• buoyancy

• density

You are designing an experiment to measure the viscosity of a substance. You think that if you take a marble with a known mass and drop it in various substances; you will get one of the following results:

• The marble will drop fastest in the most viscous liquid.

• The marble will drop the fastest in the least viscous liquid.

• The marble will not fall in any of the liquids.

• The marble will drop at the same speed in all liquids.

What is the density of 20 mL of lead that has a mass of 200 g?

• 10

• 20

• 20,4

• 15.6

If Line C represents the density of distilled water, then Line D could represent the density of

• cement block

• wood

• gold

• titanium

What is the density represented by line A

• 20g/mL

• 5g/mL

• 5mL/g

• 100g/mL

Which of the following is in the order from most dense to least dense?

• winter salt water, summer salt water, tropical fresh water

• summer salt water, winter salt water, tropical fresh water

• tropical fresh water, summer salt water, winter salt water

• tropical fresh water, winter salt water, summer salt water

What happens as a ship leaves the Atlantic ocean and enters the St. Lawrence River? (saltwater ocean into freshwater river)

• the ship floats higher in the more dense water of the river

• the ship floats lower in the more dense water of the river

• the ship floats lower in the less dense water of the river

• the ship floats higher in the less dense water of the river

Consider a hot air balloon. Which statement is correct?

• when the buoyant force equals the force of gravity, the balloon stops rising

• when the balloon is heated, the air particles in the balloon move more slowly

• the balloon rises because the buoyant force is less than the force of gravity

• as the balloon is heated, it becomes more dense than the surrounding air