Light Energy!
More Light!
Circuits!
More Circuits!
Transfer vs. Transform!
100
What is the main source of light energy found on Earth?
The Sun
100
How does light travel?
In a STRAIGHT LINE
100
What part of a circuit is the power source?
The battery
100
Give an example of an energy load
Light bulb, bell, fan, buzzer, motor, etc.
100
What is the transformation of energy?
When energy changes from one form to another
200
What is refraction?
The BENDING of light as it travels THROUGH different mediums
200
What is reflection?
The BOUNCING of light off of a surface
200
What is the difference between insulators and conductors?
Insulators: BLOCK or SLOW thermal and electrical heat from passing/flowing through an object
Conductors: ALLOW thermal and electrical heat to flow easily
200
What is a closed circuit?
A closed circuit has NO gaps and allows electricity to flow through it. A closed circuit is also called a COMPLETE circuit.
200
What is happening when there is a TRANSFER of energy?
One type of energy is moving from one object to another
300
What is a medium?
A surface that light interacts with
300
Why do darker colors feel warmer out in the sunlight compared to lighter colors?
Darker colors ABSORB more sunlight that convert to thermal energy making us feel warm.
300
Which part(s) of the circuit could be removed and still allow the circuit to be closed/complete?
Remove switch 2 and the wires connected to it.
This is because the switch is not controlling anything on the circuit.
300
Where in this photo is there a complete circuit?
Battery to bell then back to the battery
300
How are ocean waves created?
Through the TRANSFER of energy between the water particles. This causes the up and down motion for waves.
400
What is an example of reflection that happens when you look in a mirror?
You see your face, you see everything in the area around you
400
Give 3 examples of mediums that REFRACT light
Water, glass, Prism, Plastic, Glasses lens
400
What could be placed in the opening of this circuit that will allow electricity to flow through it ?
A conductor
Metal: paperclip, penny, aluminum foil, nail, etc.
400
If switch 1 and switch 3 are closed and switch 2 is open, what loads on the circuit will be working?
Blue bulb #1, Bell and Green bulb
400
Ball #1 is moving while ball #2 is not.
Explain what happens to the energy in the scenario when ball #1 comes in contact with ball #2
When ball #1 hits ball #2 the energy in ball #1 is transferred to ball #2 which causes ball #2 to move.
500
Explain what is happening to the light in this photo that makes the pencil appear broken. 
As the light travels from the air into the water the light is changing directions and slowing down which causing the pencil to look broken.
500
Through which tube does the girl see the lit candle? Why?
The tube on the right because light travels in a straight line
500
1. What switches would you open to only produce mechanical energy?
2. What switches would you open to only produce sound energy?
3. What switches would you open to only produce light energy?
1. Open switches 1 & 3
2. Open switches 1, 2 & 4
3. Open switches 2, 3 & 4
500
Label the parts of this circuit.
Which switch could be opened and still allow everything on the circuit to work?
The middle switch can be opened because it is not controlling anything on that pathway.
500
Explain how energy is transforming as it travels through the circuit.
Starts as chemical energy in the battery--> transforms to electrical energy in the wires --> transforms to light energy at the light bulbs --> transforms to sound energy at the bell