Basic Concepts
What is energy?
The ability to do work or cause change.
What is kinetic energy?
Energy an object has due to its motion.
What is sound energy?
Energy carried by sound waves.
What is energy transformation?
The process of changing energy from one form to another.
What are waves?
Disturbances that transfer energy from one place to another.
Unit of energy?
Joule (J).
What is potential energy?
Energy stored due to an object's position or state.
What is pitch?
The perceived frequency of a sound.
Example of energy transformation.
A toaster transforms electrical energy into thermal energy.
What is frequency?
The number of waves that pass a point in one second.
Law of conservation of energy?
Energy cannot be created or destroyed, only transformed from one form to another.
What is thermal energy?
Energy that comes from heat.
What is amplitude?
The height of the sound wave, which determines the volume of the sound.
Energy transformation in a toaster.
Electrical energy is transformed into thermal energy to toast bread.
Difference between transverse and longitudinal waves?
Transverse waves have oscillations perpendicular to the direction of the wave, while longitudinal waves have oscillations parallel to the direction of the wave.
4 forms of energy?
Kinetic, potential, thermal, chemical, electrical, and more.
What is chemical energy?
Energy stored in the bonds of chemical compounds.
What is echo?
A reflected sound wave.
Energy transformation in photosynthesis.
Light energy is transformed into chemical energy in plants.
What is the name of the top and bottom of a wave? Spell it correctly.
Difference between energy and power?
Energy is the ability to do work, measured in joules; power is the rate at which work is done, measured in watts.
What is electrical energy?
Energy caused by the movement of electrons.
How does sonar work?
It uses sound waves to detect and locate objects underwater.
Energy transformation in a hydroelectric dam.
Kinetic energy of water is transformed into electrical energy.
What are particles?
Small localized objects to which can be ascribed several physical or chemical properties.