End of 3rd year quiz

Which theory is used to explain how heat is transferred by convection currents in fluids?

• Quantum theory

• Kinetic theory

• Relativity theory

• String theory

How is heat transferred by infrared radiation?

• Through conduction

• Through convection

• Through radiation

• Through evaporation

What effect does evaporation have on an object?

• Heating effect

• Cooling effect

• No effect

• Insulating effect

What occurs at a constant temperature during changes of state?

• Increase in temperature

• Decrease in temperature

• Changes of state

• No change

What is the equation used to calculate specific heat capacity?

• E=mc^2

• E=mcΔT

• E=mv^2

• E=mh

Which of the following statements is true about friction?

• Friction acts in the same direction as motion.

• Friction acts between two surfaces in contact and always opposes motion.

• Friction does not affect moving objects.

• Friction can only occur in liquids.

What is the effect of a resultant force on an object?

• It can cause an object to change color.

• It can cause an object to speed up, slow down, or change direction.

• It can cause an object to increase in size.

• It can cause an object to decrease in temperature.

How is acceleration calculated?

• a = Δv/Δt

• a = v/t

• a = d/t

• a = F/m

Which of the following is a correct application of the formula for work done?

• W = Fd

• W = F/t

• W = Fv

• W = Fm

What can a force cause an object to do in terms of shape?

• Change color

• Change shape

• Change temperature

• Change mass