Currents from the Kitchen 2


  1. Grape tomato – 0.2v
  2. Onion – 0.3v
  3. Grapefruit – 0.4v
  4. Apple – 0.25v


  • The deeper the two metals went into the fruit, the stronger the voltage was
  • When the two metals went into two different fruits, the combined voltage was higher
  • If the fruit had more acid, the greater the electric charge would be

Currents from the Kitchen

Purpose: To know what fruit will have the greatest voltage

Hypothesis: When the grape tomato is attached to the voltmeter it will produce the most electric voltage

Materials: Fruits, voltmeter, 2 wires, 2 different metals (copper & zinc), knife


  1. Cut the fruit
  2. Put in the 2 metals into the fruit
  3. Attach one end of the 2 wires to the 2 metals in the fruit
  4. Attach other end of the 2 wires onto voltmeter
  5. Record results
  6. Repeat procedure with other fruits and record results
  7. Mix and match some fruits together (i.e. grapefruit and lemon) to create greatest voltage

Image result for grape tomatoes

Link for picture:

Electricity Mind Map

Questions about electricity :

  1. Who discovered electricity?
  2. Without electricity what would the world look like?
  3. What are some others power sources other than electricity?
  4. Do humans contain electricity?
  5. How does electricity work?
  6. How is electricity made?
  7. How many volts are in a lightning bolt?

Solution Fluency

Deliver: Embedding the pitches

World Wide Fund For Nature, WWF. “The Threats & Problems Affecting Species and Their Survival.” WWF,

Climate Change Canada. “Alien and Invasive Alien Species.”, 12 May 2017,

Protecting the Endangered Species Act

“Rainforest Concern.” Rainforest Concern – Why Are They Being Destroyed?,

Parry, Wynne. “Climate Change Could Melt Wolverines’ Snowy ‘Refrigerators’.” LiveScience, Purch, 13 July 2012,

“Buzzing about Climate Change : Feature Articles.” NASA, NASA,

Debrief: The quality of my post and process could’ve been better, I did well on describing my challenge but I could’ve worked on the Dream process more.