science q3 exam Flashcards
(27 cards)
What is a wave?
A wave is a disturbance that transfers energy from one place to another.
True or False: Waves can only travel through water.
False
Fill in the blank: The height of a wave is called the _____
amplitude
What are the two main types of waves?
Transverse waves and longitudinal waves.
In a transverse wave, the particles move _____ to the direction of the wave.
perpendicular
What is the term for the distance between two consecutive crests or troughs in a wave?
Wavelength
True or False: All waves require a medium to travel through.
False
What is energy?
Energy is the ability to do work or cause change.
Fill in the blank: The speed of a wave is determined by its _____ and _____
wavelength, frequency
What is frequency?
Frequency is the number of waves that pass a point in one second.
True or False: Higher frequency means shorter wavelength.
True
What is the formula to calculate wave speed?
Wave speed = frequency × wavelength
What is a medium?
A medium is the substance through which a wave travels.
Give an example of a longitudinal wave.
Sound wave
What is amplitude related to in terms of wave energy?
Amplitude is related to the energy of the wave; higher amplitude means more energy.
Fill in the blank: The lowest point of a wave is called the _____
trough
True or False: Light waves are examples of electromagnetic waves.
True
What do we call waves that do not require a medium?
Electromagnetic waves
What type of wave is characterized by compressions and rarefactions?
Longitudinal wave
What is the relationship between wave frequency and energy?
Higher frequency waves carry more energy.
What instrument is used to measure the frequency of a wave?
Hertz meter
Fill in the blank: The time it takes for one complete wave to pass a point is called the _____
period
What is the unit of frequency?
Hertz (Hz)
True or False: A wave’s speed can change when it moves from one medium to another.
True
