What is the energy changes that occur in the power station?

• Wind energy --> electrical energy

• kinetic energy --> electrical energy

• Chemical energy --> electrical energy

• Gravitational potential energy --> electrical energy

Which one is NOT renewable energy sources?

• petroleum and wind

• wind and geothermal

• geothermal and nuclear energy

• Petroleum and nuclear energy

Which of the following describe the characteristics of non-renewable energy sources?

• Can be depleted if the usage is not controlled

• Takes millions of years to be formed

• Can not cause environmental pollution

• Have limited sources

Diagram shows two energy sources M and N. What are the types of energy sources for M and N?

• M-non renewable, N-non renewable

• M-non renewable, N-renewable

• M-renewable, N-non renewable

• M-renewable, N-renewable

Tags

NGSS.MS-ESS3-4

Which one is renewable energy source?

• Nuclear

• Geothermal

• Coal

• Natural gas

The diagram shows how electrical energy is produced.

What does Q represent?

• The water is heated until steam is produced and the turbine is rotated.

• The water rotates a motor, which will then rotate a generator.

• A mixture of steam and gas is heated until they expand and the turbine is generated.

• The water rotates a turbine, which will then rotate a generator.

Zahid is conducting an activity to generate electricity by using the apparatus as shown in the diagram.

What should be done by Zahid to produce electric current?

• move the copper rod and move the galvanometer

• move the copper rod and move the magnet

• move the magnet and move the galvanometer

• move the galvanometer and replace the copper rod with a wooden ruler

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which sequence of energy changes in the nuclear power station is correct?

• Nuclear energy --> kinetic energy --> electrical energy

• chemical energy --> heat energy --> nuclear energy --> kinetic energy --> electrical energy

• heat energy --> kinetic energy --> nuclear energy --> chemical energy --> electrical energy

• nuclear energy --> heat energy --> kinetic energy --> electrical energy

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

Which of the follwing generators does not use a turbine to produce electricity?

• nuclear generators

• solar

• hydroelectric generators

• thermal generators

What is the purpose of a generator?

• to convert electrical energy to mechanical energy
• to convert chemical energy to electrical energy
• to convert mechanical energy to electrical energy
• to convert mechanical energy to heat energy

Tags

NGSS.HS-PS3-3