Topics 4, 5 and 6
Terms in this set (34)
The tendency to rise or float on a fluid substance
The upward force exerted on objects submerged in or floating on a fluid, measured in Newtons (N).
Remaining suspended in a fluid; not falling in air or sinking in water.
True or False: The viscosity of a liquid decreases as it is heated.
Factors that affect buoyancy
Density of fluid, surface area and design of object
The total mass of an object divided by the total volume.
True or False: Every substance is made of particles that have a size and/or shape that is unique to that substance which effect how many of these particles can 'crowd' together.
The amount of matter in a substance; measured with a balance.
True or False: Gases flow the same as liquids.
The amount of space occupied by a substance.
The force of gravity exerted on a mass.
Factors that influence viscosity of gases
Particle size, particle shape, internal friction and temperture
A push or a pull, or anything that causes a change in motion of an object.
The attractive forces between masses; causes object to be attracted to Earth.
The amount of mass in a certain unit volume of a substance; how 'heavy' an object is.
Resistance to flow
The viscosity of liquids can be compared by observing their ______________ .
Formula for Density
Mass divided by volume
True or False: Some liquids have more internal friction because of their strong attractive forces.
True or False: for most pure substances, density in a solid state is less than density in a liquid state.
True or False: The density of ice is less than the density of water.
True or False: When calculating density, liquids are measured using litres (L) or Millileters (ml).
Decrease or lessen.
Life jackets ________________ a person's average density, enabling the person to float.
A scientific principle stating that the buoyant force acting on a submerged object equals the weight of the fluid displaced by the object.
An instrument designed to measure the density of a liquid.
True or False: Temperature does not influence the viscosity of gases.
True or False: The density of a liquid object is measured in g/cm3.
The volume of fluid that passes a point in a pipe or tube in a certain amount of time.
The condition in which the amount of force pulling down on an object immersed in a fluid equals the amount of force pushing up.
True or False: Particle size influences the viscosity of gases.
Measured in Newtons (n)
Scale or Balance
Mass is measured using a _________________________.
The volume of an irregular object can be measured using ______________________________ principle.
The property that describes a liquid's thickness.
A thicker liquid is said to be more ___________________.