True or false: Potential energy and kinetic cycle and this energy can change into one another
What is :
True
100
What is a medium in energy transfer?
What is :
The matter energy travels through. Ex. solid, liquid, gas
100
There are two types of waves. State these and say which is a light wave and which is a sound wave. Sketch these
What is:
Light = Transverse
Sound = Compressional
200
The type of energy that occurs with friction
What is heat
200
Give an example of the energy conversion for a microwave oven
What is
Electric to Light, Heat, Sound, Mechanical, Radiant
200
Define Potential Energy (PE) and Kinetic Energy (KE)
What is :
PE is stored energy
KE is movement energy
200
In which medium does sound travel faster in? Liquid or gas?
Why?
What is :
Liquid
Because the particles are closer together and transfer sound energy more efficiently
200
State True or False for the following:
1. Sound travels faster in cold air
2. Green light is less frequent than red light
3. More wave frequency = less energy
4. A high pitch sound = more frequent wave
What is :
1. True
2. False
3. False
4. True
300
The type of energy that plants use to make chemical enrgy
What is light
300
Give an example of an energy conversion of your choice that has not been talked about today
What is a lamp : El----> H, L
300
Name the two types of Potential energy and give examples
What is :
Gravitational Potential Energy (GPE) , ex. Ball or rock at a height
Elastic Potential Energy (EPE), bow & arrow, rubber band, sling shot
300
Answer these questions:
Light is a ___________ wave.
Light (does / does) not need a medium.
Light is (faster or slower) than sound.
What is :
transverse
does not need a medium
faster
300
Name the three ways heat is transferred and give an example of each.
What is :
Conduction- feet on hot beach or cookies on pan
Convection- Mantle, air masses, boiling water
Radiation - fire , solar radiation in space
400
Name the energy types found in a car
What is light, sound , heat, chemical, mechanical, electrical
400
State the energy conversion in a firework
What is :
Chemical to Light , Sound, Heat, Mechanical
400
Name the three factors that change gravitational potential energy
What is :
mass, gravity and height
400
White light waves have different frequencies.
State which color is the fastest (more frequent) wave and which color is the slowest (least frequent).
What is :
Violet= fastest (most frequent)
Red = Slowest (least frequent)
400
Sketch a wave and label these parts:
Crest
Trough
Amplitude
Wavelength
What is :
See sketch
500
List & Give examples of all of the types of energy
What is sound, light, heat, radiant, chemical, electric, nuclear,mechanical
500
State and explain the law that states why energy changes (converts) to another energy
What is : the Law of Conservation of Matter & Energy
Energy is never lost or gained (created or destroyed).
So it just changes (converts) to other types
500
Draw the pendulum model and label PE and KE %. Show arrows, start and place of most KE
What is :
See sketch
500
Explain (Make a statement about) the relationships of :
1. wavelength and frequency
2. frequency and energy
What is :
1. Increase wavelength = decrease (lowered) frequency
2. Increase in frequency = increase in wave energy
500
When energy is transferred it moves in definite ways.
Name and explain three ways energy moves.
What is :
Energy moves in: Waves
Energy moves equally in all directions from a source.
Energy moves from a source where high energy flows to low energy (high E ---> low E)