Sound
The frequency of a sound wave determines this.
What is pitch?
Light energy travels in this special kind of wave.
What is the electromagnetic wave?
Electrical current is the flow of these negatively charged particles.
What are electrons?
A pot of boiling water has increased kinetic energy, which means this is also higher.
What is its temperature?
Fossil fuels include this black layered type of rock formed from layers of plants and animals, which is burned to make energy.
What is coal?
Sound moves fastest through this state of matter (solid, liquid, gas).
What is a solid?
The bending of light waves, as you can see when light enters a prism.
What is refraction?
A path for electricity to travel in two or more possible directions
What is a parallel circuit?
Heat flows from a hotter substance to this, as in adding milk to hot cocoa.
What is the cooler substance (or the milk)?
Solar, wind, and geothermal energy are all types of this kind of energy.
What are renewable energy sources?
What is volume?
Light bouncing off of mirrors and other surfaces.
What is reflection?
A balloon that is rubbed on a sweater and then sticks to a wall demonstrates this.
What is static electricity?
The transfer of heat by electromagnetic waves
What is radiation?
Hydroelectricity is a renewable form of energy that depends on this source.
What is water?
An instrument that has little room for the sound waves to travel has this kind of a pitch.
What is a high pitch?
This type of lens helps to correct nearsightedness.
What is a concave lens?
This type of material carries electricity well, such as copper wire.
What is a conductor?
The transfer of heat through gas or liquids, such as heating a room with a furnace.
What is convection?
Wind energy utilizes the renewable energy source of wind to cause these tall structures to spin.
What are wind turbines?
This tympanic membrane is a structure that vibrates when sound waves enter the ear canal.
What is the eardrum?
The colored part of the eye
What is the iris?
A lightbulb in a series circuit is a resistor, which allows only some of this to flow through it.
What is electrical current (or electricity)?
The transfer of heat that takes place when one solid substance touches another.
What is conduction?
Solar arrays and solar farms capture the energy from this renewable energy source.