2NT - Energy

Which is not a form of energy?

• electricity

• force

• heat

• sound

Which statement about energy is correct?

• Energy can be destroyed and created

• Energy can be destroyed but not created

• Energy cannot be destroyed but can be created

• Energy cannot be destroyed or created

A ball rolling on a flat ground has ____________.

• electrical energy

• kinetic energy

• light energy

• potential energy

Which form of energy increases when a bag is raised from the floor?

• heat energy

• light energy

• gravitational potential energy

• sound energy

Electrical energy is supplied to a table lamp.

Which form(s) of energy is the electrical energy converted to?

• heat energy only

• light energy only

• light energy and electrical energy

• light energy and heat energy

An example of a non-renewable source of energy is ____________.

• biomass

• hydropower

• natural gas

• the sun

Why are renewable sources of energy considered better than non-renewable sources?

• They can be replenished naturally and cause little or no pollution

• They can be replenished naturally and cause pollution

• They cannot be replenished naturally but cause little or no pollution

• They cannot be replenished naturally but cause pollution

What is Singapore's main source of energy?

• fossil fuels

• hydropower

• the sun

• wind

Which power station makes use of a non-renewable source of energy?

• coal-fired power station

• hydroelectric power station

• solar power station

• wind power station

Which action does not help to reduce energy wastage?

• leaving a laptop on standby mode

• taking the public transport such as trains and buses

• unplugging electrical appliances from sockets when not in use

• using energy-efficient appliances