Wave Basics
This is what a wave transfers from one place to another.
What is energy?
The highest point of a transverse wave is called this.
What is a crest?
A wave passes a point 10 times in 2 seconds. Find the frequency.
What is 5 Hz?
The substances present before a reaction are called these.
What are reactants?
This type of reaction releases heat energy.
What is exothermic?
This type of wave can travel through empty space.
What is an electromagnetic wave?
In a transverse wave, particles move in this direction compared to wave movement.
What is perpendicular?
A wave has a wavelength of 3 m and frequency of 4 Hz. Find the speed.
What is 12 m/s?
This law states matter cannot be created or destroyed.
What is the Law of Conservation of Mass?
This type of reaction absorbs energy.
What is endothermic?
The material a wave travels through is called this.
What is a medium?
These are the crowded regions in a longitudinal wave.
What are compressions?
A wave travels at 20 m/s and has a wavelength of 5 m. Find the frequency.
What is 4 Hz?
The reaction type where two substances combine into one product.
What is synthesis?
Burning wood is this type of reaction.
What is exothermic?
These waves require a medium to travel.
What are mechanical waves?
Compare particle motion in transverse and longitudinal waves.
Transverse = perpendicular motion; Longitudinal = parallel motion.
A wave has a speed of 12 m/s and frequency of 3 Hz. Find the wavelength.
What is 4 m?
The reaction type where one element replaces another in a compound.
What is a single replacement reaction?
Explain why exothermic reactions feel warm.
Because energy/heat is released into the surroundings.
Explain why sound cannot travel through space.
Because sound needs particles/a medium to travel through.
Explain how a slinky models a longitudinal wave.
Compressing and spreading the coils models compressions and rarefactions.
Explain the relationship between wavelength and frequency.
As wavelength increases, frequency decreases.
Explain the difference between coefficients and subscripts.
Coefficients change molecules; subscripts change the substance itself.
Compare endothermic and exothermic reactions, including what happens to the surroundings.
Exothermic releases energy and warms surroundings; endothermic absorbs energy and cools surroundings.