waves (general)
What W describes a repeating pattern that transfers energy but not matter?
wave
What V is the movement of particles back and forth when sound travels through air?
Vibrations
Through which medium does sound travel slowest: air, water, or iron?
AIR
What do we know about the particles in a pure substance compared to a mixture?
Every particle in a pure substance is the same
What word describes a mixture where one substance dissolves in another?
A solution
Name the distance from one wave crest to the next.
Wavelength
What type of wave is sound? (hint: L)
A longitudinal wave
What is the approximate speed of sound in air?
340 m/s
Which type of pure substance comes in 118 different types, one for each on the periodic table?
elements
In a solution, what is the name given to the substance present in the smaller amount?
solute
What is the name of the number of waves passing a point each second?
Frequency
What are the high‑pressure and low‑pressure regions in a sound wave called?
Compressions and rarefactions
How long approximately would it take for a person to hear a sound from a source 1 km away?
Use the speed of sound in air (about 340 m/s):
Distance = 1 km = 1000 m
3 seconds
What is the name given to a substance formed when two or more elements, such as hydrogen and oxygen, are chemically combined?
Compound
In a solution made by adding 10 g of salt to 90 g of water, what name is given to the water component?
solvent
In a transverse wave, in which direction do the particles vibrate relative to the direction of wave travel? (Hint begins with P)
Perpendicular
What happens to the pitch of a sound when its frequency increases?
The pitch increases
The speed of sound in air is 340 m/s. If it takes 5 seconds for a sound to be heard, how far away was the person who made the sound?
1700 metres
What is the name given to a substance formed by physically combining two pure substances without a chemical reaction?
A mixture
A solution is made by adding 10 g of salt to 90 g of water. Half of the water is then evaporated. What is the final mass of the solution?
55 g
What piece of equipment converts sound waves into visible transverse wave images?
How do particles vibrate in a longitudinal wave compared to the direction the wave moves?
Parallel
A student claps his hands while standing 680 m from a cliff face. How long will it take before he hears the echo?
Which of the following is a pure substance: air, salt, or seawater?
salt
A solution containing 10 g of salt and 90 g of water is mixed with another solution containing 20 g of salt and 150 g of water. Half of the total water is then evaporated. What is the final mass of the solution?
150 g