Question

today we will build 3 different energy systems. 1. hand - crank generator system 2. battery system 3. solar cell system 1) describing the energy systems pick one of the three energy systems to describe. system number 1 brief description objects(items): battery→wire→fan energy type (1 - 10): chemical→electrical→mechanical energy type(k.e./p.e.): 2) reasoning tool: \does the system have energy?\ evidence (observations about whether the system does or does not have energy) the battery & wire have energy which turned the fan on. reasoning (how does this evidence support the claim?) claim (what is the answer to the question?) yes our system has energy.

Explanation:

Step1: Identify the system chosen

The battery system is chosen as indicated by the filled - in details.

Step2: Describe the system components

The components are battery, wire, and fan which transfer energy in sequence.

Step3: Identify energy types

Chemical energy in battery is converted to electrical in wire and then to mechanical in fan.

Step4: Classify energy as K.E./P.E.

Chemical energy is potential. Electrical energy in circuit can be seen as a form of potential and mechanical motion of fan is kinetic.

Step5: Provide evidence for energy presence

The fact that fan is turned on shows energy exists in system.

Step6: Reason the evidence - claim link

The fan being powered on is direct evidence of energy in system.

Answer:

1)
System Number: 2
Brief Description: A battery - powered system where a battery supplies electrical energy through wires to a fan, causing it to rotate.
Objects(Items): Battery → Wire → Fan
Energy Type (1 - 10): Chemical → Electrical → Mechanical
Energy Type(K.E./P.E.): Potential (Chemical) → Electrical (can be considered a form of potential in circuit context) → Kinetic (Mechanical motion of fan)
2)
Evidence: The battery and wire have energy which turned the fan on.
Reasoning: Since the fan was turned on by the energy from the battery and wire, it shows that the system has energy.
Claim: Yes our system has energy.