ENERGY QUIZ SHOW

Which of the following are renewable energy?

• solar and hydroelectric energy

• wind and wave

• biofuel and geothermal energy

• all of the above

Which of the following are nonrenewable energy?

• coal

• oil

• natural gas

• all of the above

Which of the following is the advantage of using hydroelectric power?

• can be generated all the time

• expensive to build

• it takes time to build

• can cause flooding when dams are damaged

Which of the following is a disadvantage of using hydroelectric power?

• It can be built all the time.

• it is expensive to build hydroelectric stations

• it is environment friendly

• it is cost effective

Which type of energy is stored in the battery for a flashlight?

• electrical

• chemical

• mechanical

• magnetic

Which energy is transferred as waste energy when turning on a TV?

• Light

• sound

• heat or thermal

• mechanical

Where does the waste energy go when turning on a flashlight?

• It transferred/spread to the surroundings.

• it is transferred into radioactive energy

• It is transferred into chemical energy

• it is transferred into the ground.

A car has a mass of 10 kg. What is the kinetic energy, KE, of the car if it travels at a speed of 5m/s? KE = 1/2 x m x v2

• 150 J

• 125 J

• 625 J

• 300 J

A crate has a mass of 50 kg. A crane lifts the crate to a height of 15 m above the ground. What is the gravitational potential energy stored by the crate?

GPE = m x g x h

g = 10 N/kg (gravitational field strength of the Earth)

• 3500 J

• 5000 J

• 750 J

• 7500 J

Which of the following materials is the best thermal conductor?

• foam

• polysterene

• fiber glass

• rubber