EnergyChanges

Multiple Choice

What is Energy?

• Energy is the capacity to do work.
• Energy is a form of currency.
• Energy is the speed of light.
• Energy is a type of matter.

Multiple Choice

What is the ultimate source of energy for life on Earth?

• Fossil fuels
  

• The Moon

• The Sun

• Wind

Multiple Choice

Which of the following is a renewable energy source?

• Coal

• Solar energy

• Natural gas

• Petrol

Multiple Choice

Fossil fuels are formed from:

• Living plants

• Water and minerals

• Remains of dead plants and animals

• Rocks and soil

Multiple Choice

 Energy transformation occurs when:

• Energy is stored

• Energy changes from one form to another

• Energy is lost
  

• Energy remains constant

Multiple Choice

Sound is produced by:

• Moving water

• Vibrating objects

• Static objects

• Heat energy

Multiple Choice

Noise is defined as:

• Pleasant sound

• Repeated vibrations

• Random and irregular sound waves

• A sound that only animals can hear

Multiple Choice

Sound travels through:

• Solids, liquids, and gases

• Only solids

• Only liquids

• Only gases

Multiple Choice

What happens when sound vibrations interact with air particles?

• The air particles stop moving

• The vibrations are absorbed and lost

• A sound wave is produced

• Heat energy is generated

Multiple Choice

What is an example of energy conservation?

• Using fossil fuels

• Keeping appliances switched on when not in use

• Installing LED lights

• Driving instead of walking