Types of Energy and Systems

The video tutorial introduces the concept of energy systems, focusing on the input and output of energy. It explains how different systems, like appliances, require energy input to function and produce energy output, which can sometimes be non-useful. The tutorial provides examples, such as paraffin lamps and radios, to illustrate these concepts. It also includes practical exercises and homework to reinforce learning.

What is the primary input energy for a paraffin lamp?

• Batteries

• Electricity

• Solar

• Paraffin

Which type of energy is not useful from a paraffin lamp?

• Sound

• Light

• Heat

• Movement

What is the output energy of a radio that uses batteries?

• Movement

• Heat

• Sound

• Light

What type of energy is required to operate an electrical stove?

• Solar

• Chemical

• Electrical

• Mechanical

What is the output energy of a TV besides sound?

• Chemical

• Heat

• Light

• Movement

What is the input energy for the human body?

• Light

• Heat

• Food

• Electricity

Which of the following is an example of a system?

• A light bulb

• A battery

• A bicycle

• A single wheel

What is the not so useful output energy of a kettle?

• Movement

• Light

• Sound

• Heat

What activity is required for homework on page 124?

• Write an essay

• Draw a flow diagram

• Solve math problems

• Read a chapter

Which appliance is used as an example for a flow diagram on page 125?

• Wind-up radio

• Gas stove

• Solar panel

• Electric fan