What is the law of conservation of energy?
Energy cannot be created or destroyed; it can only change forms.
What energy transformations take place when a hair dryer is used?
Electrical energy from the circuit is transformed to thermal energy and sound energy.
An ice cube is placed in a glass of warm tea. Later, the ice has melted, and the tea is cooler. What is true about the system now?
Thermal energy has been transferred from the tea to the surrounding air and glass.
What energy transformation happens when you use a microwave oven?
Electrical energy is transformed into electromagnetic energy.
A forklift is used to lift a crate from the ground and place it onto a truck. What type of energy is transferred to the crate?
Gravitational potential
What type of energy is a forest fire?
Thermal, light energy
Energy is found in many different forms, but it can be classified into two distinct categories:
kinetic energy and potential energy.
______ is another name for thermal energy.
Heat
Batteries take stored chemical energy and turn it into _______ energy.
electrical
The Sun and all of the stars in the universe generate energy through fusion reactions. This is known as...
nuclear energy.
______ energy is energy stored in an object when it is compressed.
Elastic