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What is energy?
The ability to do work.
What is potential energy?
non renewable energy
What is kinetic energy?
The blades of a toy helicopter spin when its circuit is connected to a battery. Which sequence below correctly identifies the energy changes taking place in the helicopter?
chemical to electrical to potential
chemical to electrical to mechanical
Which of the following gadgets best shows the transformation of energy from electrical to mechanical with the correct reasoning?
A light bulb because electricity is being used to create light and heat.
A fan because electricity is being used to spin the blades of the fan.
Two students place three ice cubes in a glass of water that was at room temperature. Which of the following scenarios would best describe the results of the investigation?
Energy from the water will transfer to the ice cubes, causing the ice to melt.
Cold from the ice cubes will transfer to the water, causing the water to cool.
1. Using the image identify the three forms of heat transfer.
A = Conduction B = Convection C = Radiation
A = Radiation B = Conduction C = Convection
A = Convection B = Conduction C = Radiation
A = Radiation B = Convection C = Conduction
Choose the image below that shows potential energy decreasing then increasing if following the arrows from left to right?
Where would an object have the most potential energy?
The bottom of a hill
The top of the hill
On the way down the hill
It never has potential energy
If you have a battery in a device, what is the first energy transformation that must happen?
Chemical to light
Chemical to electrical
Electrical to chemical
Electrical to light