Name some kinds of energy
sound, heat, fuel
How do wheels and pulley help our life?
They help something move easier.
Attract or repel?
repel
Name some examples of heat energy
iron, cooker, microwave, oven, ....
Who invented the telephone?
Alexander Graham Bell
Who invented the light bulb?
Thomas Edison
We don't need energy when we cook food. True or false?
False
Energy can change things. True or false?
True
Name some inventions or machines used for farms:
Tractor, Harvester, Spreader, Seeder, Digger, Sprayer
Name some examples of sound energy
speaker, headphones, drums, guitar
Name some inventions or machines used for communication:
smart phone, computer, radio, laptop
Attract or repel?
Attract
Name some vehicles we use in the past
horse, wagon
Name some inventions or machines used for construction:
Truck, Crane, Conrete Mixer, Backhoe, Excavator, Roller
Name some examples of fuel energy
oil, coal, gas