Wave Parts
Universal Energy
Mechanical Energy
Waves Behave
Energetic Transitions
Waves Math
Calculating the Energy
The Full Spectrum
100
What type of wave is this?
Transverse
100
This is the sum of a system's kinetic and potential energy.
What is mechanical energy?
100
Under these connditions, mechanical energy doesn't transform and stays within it's object
What is ideal
100
All waves transfer ____________ from one place to another.
Energy (NOT matter)
100
A light bulb turns this electrical energy into this kind of energy.
What is radiant?
100
This is the equation used to calculate the speed of a wave.
speed = wavelength x frequency
100
The equation for mechanical energy
GPE + KE = Energy total
100
What part of the spectrum has the most energy?
Gamma rays
200
Amplitude
200
The sun, a light bulb, and an X-ray all use this type of energy.
What is electromagnetic
200
How much mechanical energy an object has if it has 35J potential and 60J kinetic
What is 95J
200
The energy of a wave is directly related to which 2 wave properties?
amplitude & frequency
200
Your body uses this kind of energy from your food and turns it into motion and heat.
What is chemical?
200
If the wavelength is 20cm per 5 seconds, what is the velocity?
4cm/second
200
What is the GPE of a 40 kg lion sitting atop a 65 m tree?
25,480 J
200
DOUBLE JEOPARDY
What part of the spectrum has the longest wavlength?
radio waves
300
What is C?
Trough
300
This type of energy is caused by vibrations, travels in waves, and is sensed by us through our ears.
What is sound?
300
Daily Double
What happens to the kinetic energy of a baseball as it's hit in a high arc into right field?
It decreases until it's maximum height and then increases until it is caught or hits the ground.
300
It is a hot day outside in the summer. You are trying to stay cool. Is it better to wear white or black? Why?
White reflects the sun's light and black absorbs the light and energy, so white would keep you cooler. White is the reflection of all colors and black is the absorption of all colors. The black clothing absorbs more energy and converts it into heat.
300
A windmill turns wind into this type of energy.
What is electrical?
300
What is the period of a wave with a frequency of 5 Hz.
0.2 seconds
300
How much energy does a 20 kg object moving at 5 m/s have?
250 J
300
Name three different ways ultraviolet, x-ray, and gamma rays help us.
Ultraviolet light is used to detect forged bank notes, in blacklights that make things glow, to kill microbes (germs), and to help our bodies produce vitamin D. X-rays are used in airport security and by doctors and dentists to see inside people. Gamma rays help kill cancer.
400
What is D?
Wavelength
400
DOUBLE JEOPARDY
A thermometer measures this kind of energy.
What is thermal energy?
400
As a skydiver falls to the earth, their ____ energy is converted into ____.
Draw the graphs that support this.
Gravitational Potential energy is converted into Kinetic energy.
400
Does sound need air to be heard? Why?
No, it needs matter. because it is a mechanical wave. Sound can be heard through solids, liquids, and gasses
400
A toaster turns this kind of energy into this kind of energy.
What is electrical energy into thermal energy?
400
If the wavelength is 5 m and the frequency is 5 hz, what is the wave velocity?
25 m/s
400
How high up is a 600 kg roller coaster car if it has 250,000 J of energy?
42.5 meters
400
What color of visible light has the longest wavelength?
Red
500
A = compression
B = rarefaction
500
If you imagine a drop of water about to fall down a waterfall, at the top of the waterfall the drop of water has this kind of energy.
What is potential energy?
500
A 35kg bowling ball is dropped from a height of 150m. By the time the ball reaches 10m above the ground, it has a velocity of 15 m/s. Calculate the GPE at the top and the KE at the bottom of the building
Top : GPE = 51,450 J
Bottom : KE = 51,450 J
500
What is refraction?
The bending of a light wave as it travels through a new medium.
500
This kind of energy is given off in every energy transfer.
What is thermal energy?
500
DOUBLE JEOPARDY
The lowest frequency we can hear is about 20 Hz. Calculate the wavelength associated with this frequency for sound that travels at 340 m/s. How long is the wavelength?
17 meters
500
What is the velocity of a 600 kg roller coaster with 260,000 J of kinetic energy
V = 29.4 m/s
500
List all of the waves on the spectrum from longest to shortest waves.
Radio waves, microwave, infrared light, visible light, ultraviolet light, x-ray, gamma ray
9999
A radiowave has a period of 3.3x10-7 seconds. What is the wavelength of this wave?
99 meters