Science Quiz Materials L5-L8, Statics L1-L4, Units L1-L4

What is the erratic random movement of microscopic particles in a fluid as a result of continuous bombardment from molecules of the surrounding medium known as?

• Brownian motion

• Smithsonian motion

• Charles motion

• Boyles motion

Which state of matter has a definite shape , volume and cannot flow?

• vapour

• solid

• liquid

• gas

What is the smallest particle of an element?

• a neutron

• an ion

• an atom

• an electron

What is the name given to anything that has mass and occupies space?

• compounds

• mixture

• matter

• material

What heat transfer takes place when the sun heats the earth?

• sublimation

• convection

• conduction

• radiation

A pressure guage reads 90kPa. If the surrounding atmospheric pressure is 101kPa, what is the absolute pressure?

• -11kPa

• 1.122kPa

• 191kPa

• 11kPa

• 3 liters

• 300 liters

• 30 liters

• 131 liters

The density of concrete is 80500kg/m³ . What is the relative density of conrete if the density of water is 1000kg/m³ ?

• 805K

• 8.05

• 805

• 80.5

The density of aluminium is 2700kg/m³ . Calculate the mass of a block of aluminium that has a volume of 100cm³ .

• 27kg

• 2.7kg

• 270kg

• 0.27kg

The pressure of a closed container is 1atm at 400K. What is the final pressure of the gas at 300K?

• 1.3atm

• 13atm

• 0.75atm

• 7.5atm