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WorksheetsEnergy II
Total questions: 20
Worksheet time: 20mins
Energy transfer is
A change in the form of energy
A change in the amount of energy
A change in the intentsity of energy
All the answers are correct
Which of the following statements is CORRECT?
A burning candle transforms nuclear energy into light and heat.
A burning candle transforms chemical energy into light and heat.
A burning candle transforms light energy into chemical energy and heat.
A burning candle transforms chemical energy into nuclear energy.
Which of the following energy transfer diagrams represents what happens in a NUCLEAR POWER PLANT?
Electrical E. --> Kinetic E --> Heat E. --> Nuclear E.
Nuclear E. --> Kinetic E. --> Heat E. --> Electrical E.
Chemical E. --> Heat E. --> Kinetic E. --> Electric E.
Nuclear E. --> Heat E. --> Kinetic E. --> Electrical E.
Which of the following sequences represents the way electricity is produced in a NUCLEAR POWER PLANT?
Reactor core -> boiler -> steam -> turbine -> generator
Generator -> boiler -> steam -> turbine -> reactor core
Boiler -> steam -> turbine -> reactor core -> generator
Reactor core -> boiler -> turbine -> generator -> steam
Which of the following energy flow diagrams for a hair-dryer is correct?
Electrical energy --> heat + sound
Electrical energy --> kinetic energy + heat
Electrical energy --> kinetic energy + sound
Electrical energy --> kinetic energy + heat + sound
Which of the following energy transfer diagrams represents what happens in a THERMAL POWER PLANT?
Chemical E --> Heat E. --> Kinetic E. --> Electrical E.
Chemical E --> Kinetic E. --> Heat E. --> Electrical E.
Electrical E --> Heat E. --> Kinetic E. --> Chemical E.
Nuclear E --> Heat E. --> Kinetic E. --> Electrical E.
Which are the four main types of power plants in which electrical power is produced nowadays?
Nuclear power plants, hydroelectrical power plants, thermal power plants and wind farms.
Nuclear power plants, hydroelectrical power plants, thermal power plants and solar power plants.
Nuclear power plants, hydroelectrical power plants, thermal power plants and geothermal power plants.
Nuclear power plants, hydroelectrical power plants, thermal power plants and wave farms.
The law of conservation of energy states that...
Energy cannot be created; it can only be distroyed.
Energy cannot be distroyed; it can only be created.
Energy cannot be created nor distroyed; it can only be transformed from one type to another.
Energy cannot be created nor transformed; it can only be distroyed.
According to the law of conservation of energy, in every energy transfer...
the amount of initial energy equals the amount of resultant energy.
the amount of initial energy is greater that the amount of resultant energy.
the amount of initial energy is lower than the amount of resultant energy.
None of the anwers is correct.
Incandescent light bulbs are about 5% energy efficient. What does that mean?
Only the 5% of the initial electrical energy is transformed into light.
The 95% of the initial electrical energy is transformed into light.
The 5% of the initial electrical energy is lost as heat.
Only the 5% of the initial light energy is transformed into electrical energy.
The energy saving lamps are about 25% efficient. How much energy is lost as heat for every 1000 J of initial electrical energy?
75 J
25 J
750 J
250 J
Which of the following statements is FALSE?
Energy resources are things from which energy is obtained.
Renewable resources will eventually run out.
Renewable resources include wind, tides and waves, among others.
Non-renewable resources include fossil and nuclear fuels
Which of the following statements is FALSE?
All fossil fuels are produced in a similar way. They all come from the remains of animals or plants (organic matter).
It takes millions of years to produce fossil fuels.
The remains of animals or plants are transformed into fossil fuels due to heat and pressure.
All fossil fuels are produced under the sea.
Which of the following statements is FALSE?
Fossil fuels are relatively easy to obtain.
The combustion of fossil fuels is causing a lot of pollution.
The combustion of fossil fuels desn't affect the global warming because it doesn't emit CO2.
Fossil fuels are quite energy efficient.
Which of the following statements is FALSE?
Nuclear fuels don't emit any CO2, so they don't affect global warming.
Nuclear fuels doesn't emit any SO2, so they don't cause acid rain.
Nuclear fuels are extremely efficient.
Nuclear fuels cause few accidents and they are not usually serious.
Which of the following facilities/devices doesn't use a turbine to produce electrical power?
Wind farms
Hydroelectric power plants
Solar photovoltaic modules
Geothermal power plant
Which of the following devices transforms kinetic energy into electrical power?
Turbine
Generator
Blade
Condenser
Which of the following renewable energy resources doesn't depend somehow on the sun?
Running water
Geothermal energy
Tides and waves
Wind
Which type of power station does NOT use steam from boiling water to generate electricity?
Hydroelectrical
Geothermal
Nuclear
Thermal
Which source of energy uses the production of steam to generate electricity?
Tides
Wind
Running water
Nuclear fuels
