17. Which energy transformation caused the bread to toast?
Electrical to thermal (heat)
23. What must be done to turn on the 2 blue bulbs?
Switches 2 and 3 should be closed
19. How can this kid affect the motion of the wagon?
He can push or pull it.
16. What can we replace yarn with to make this circuit work?
An electrically conductive wire. (metal)
3. A flow of electrical charge through a conductor.
C- Electrical energy
14. In this circuit, is the switch open or closed?
Closed
9. What energy transfer is happening at B, in order for the phone to get charged?
Electrical Energy to Chemical Energy
11. Look at the following circuit and answer the questions. How many bulbs will light up in this circuit? _______________ Does this circuit work? _____________. If not, why does it not work? ___________________________________________
None will light up. This circuit does not work. The wires are not hooked up to both battery terminals.
4. Energy that is stored in matter and that can be released by a chemical reaction
D- Chemical energy
5. Energy that can travel and be seen by the human eye
B- Light energy
2. A change in energy from one form to another.
E- Energy transformation
Bonus 1: True or false: All circuits need a power supply.
True
13. In this circuit, will the bulb turn on?
no, the yarn is an insulator
10. Once the cellphone is on, name 3 energy transfers that happen within the phone.
Electrical to Sound, Electrical to Light, Electrical to Mechanical (vibration), Electrical to Thermal
1. What is needed to do or cause a change?
F- Energy
12. What type of material should the wires be made of in order for electricity to flow through it?
Electrical Conductors (metals)
6. A three-dimensional representation of a person or thing or a proposed structure, typically on a smaller scale than the original
A- Model
20. In order to increase the speed that this kid can move the wagon, what must he do?
He can pull or push with more force, or decrease the friction by moving the wagon on a smoother surface
15. What material is causing this circuit to not work?
Yarn is not a conductor
18. Which energy caused the bread to pop up after it has been toasted?
Electrical to Mechanical
21. A pull or push force is required to move the wagon. The wheels rotating are an example of what type of energy?
Mechanical Energy
7. The energy an object has due to its motion
G- Mechanical energy
22. What must be done to turn on the green bulb and the bell?
Switch 1 must be closed
8. What energy transfer is happening for the solar panel to get energy?
Solar energy to electrical energy
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