Energy Pressure etc

A ball rolling on the ground has which type of energy?

• chemical

• potential

• kinetic

• electrical

Bernoulli's principle states

• the pressure in a moving stream of fluid decreases as the speed of the fluid increases

• an object is buoyed up by a force equal to the weight of the fluid that it displaces

• for every action there is an equal and opposite reaction

• the acceleration of an object is directly proportional to the force applied

An object with a high density would take up more space than one with lower density if both objects have the same mass.

• True

• False

Pascal is the unit of measure for

• Force

• Mass

• Density

• Pressure

What happens to the air pressure as you climb up a mountain

• it decreases

• it increases

• it remains the same

Terry measures the amount of work done by a machine in a certain amount of time. What quantity is he measuring?

• Energy

• Pressure

• Force

• Power

An appliance whose job it is to convert electrical energy into sound energy is

• a microphone

• a speaker

• a light bulb

• an iron

Which of the following is NOT a renewable source of energy

• natural gas

• wind

• solar

• tidal

What happens to the pressure exerted by an object when the object's surface area increases?

• The pressure increases

• The pressure decreases

• The pressure remains the same

Which of the following correctly describes the energy conversion that occurs when a mango falls off a tree.

• kinetic energy changes into potential energy then sound energy

• potential energy changes in sound energy then kinetic energy

• potential energy changes into kinetic energy then sound energy

• chemical energy changes into potential energy then kinetic energy